1
|
Firouz B, Faihs L, Slezak P, Ghaffari Tabrizi-Wizsy N, Schicho K, Winter R, Kamolz LP, Dungel P. Testing the effects of photobiomodulation on angiogenesis in a newly established CAM burn wound model. Sci Rep 2023; 13:22985. [PMID: 38151564 PMCID: PMC10752885 DOI: 10.1038/s41598-023-50165-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 12/15/2023] [Indexed: 12/29/2023] Open
Abstract
Burn wounds are a common challenge for medical professionals. Current burn wound models hold several limitations, including a lack of comparability due to the heterogeneity of wounds and differences in individual wound healing. Hence, there is a need for reproducible in vivo models. In this study, we established a new burn wound model using the chorioallantoic membrane assay (CAM) as a surrogate model for animal experiments. The new experimental setup was tested by investigating the effects of the auspicious biophysical therapy, photobiomodulation (PBM), on the wound healing of an induced CAM burn wound with a metal stamp. PBM has been shown to positively influence wound healing through vascular proliferative effects and the increased secretion of chemotactic substances. The easily accessible burn wounds can be treated with various therapies. The model enables the analysis of ingrowing blood vessels (angiogenesis) and diameter and area of the wounds. The established model was used to test the effects of PBM on burn wound healing. PBM promoted angiogenesis in burn wounds on day 4 (p = 0.005). Furthermore, there was a not significant trend toward a higher number of vessels for day 6 (p = 0.065) in the irradiated group. Changes in diameter (p = 0.129) and the burn area (p = 0.131) were not significant. Our results suggest that CAM can be a suitable model for studying burn wounds. The novel experimental design enables reproducible and comparable studies on burn wound treatment.
Collapse
Affiliation(s)
- Bardia Firouz
- Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, 1200, Vienna, Austria
| | - Lorenz Faihs
- Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, 1200, Vienna, Austria
| | - Paul Slezak
- Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, 1200, Vienna, Austria
| | | | - Kurt Schicho
- Department of Oral and Maxillofacial Surgery, Medical University of Vienna, 1090, Vienna, Austria
| | - Raimund Winter
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036, Graz, Austria
| | - Lars Peter Kamolz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036, Graz, Austria
- Center for Regenerative Medicine and Precision Medicine-Coremed, Joanneum Research Forschungsgesellschaft mbH, 8010, Graz, Austria
| | - Peter Dungel
- Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, 1200, Vienna, Austria.
| |
Collapse
|
2
|
Winter R, Tuca AC, Justich I, Tschauner S, Friedl H, Girsch W, Lebo P, Zrim R, Lumenta DB, Kamolz LP. Minimally Invasive Treatment of Trapeziometacarpal Osteoarthritis: Results of a Blinded Randomized Controlled Trial. Plast Reconstr Surg 2023; 152:1277-1285. [PMID: 37039525 DOI: 10.1097/prs.0000000000010516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
Abstract
BACKGROUND Surgical therapy for widespread first carpometacarpal (CMC1) arthritis permanently alters the physiologic anatomy of the hand. The injection of autologous substances into the thumb saddle joint could achieve temporary pain relief and delay surgical indications. This trial aimed to compare the pain-reducing effects of autologous fat and/or platelet-rich plasma (PRP) with saline 0.9% in the infiltration therapy of carpometacarpal arthritis of the thumb (CMC1 arthritis). METHODS A blinded, randomized controlled trial was conducted. Ninety-five patients with CMC1 arthritis were included in the study. The mean follow-up period was 2 years. Participants were injected with 1.5 mL of autologous fat, PRP, autologous fat and PRP, or 0.9% saline solution into the CMC1 joint, depending on the group allocation. The primary outcome of this study was the evaluation of pain reduction in each treatment group. RESULTS The combination of fat and PRP was the only treatment that resulted in a significantly greater reduction in pain compared with 0.9% saline ( P = 0.003). Similarly, fat and PRP in combination was the only therapy group to achieve clinically relevant Quick Disabilities of Arm, Shoulder, and Hand score reduction, and the only group that showed a significantly better Medical Outcomes Study 36-Item Short-Form Health Survey score than 0.9% saline ( P = 0.016). No major complications were noted. CONCLUSIONS In addition to pain reduction, the combination of autologous fat and PRP yields a relevant improvement in hand function and a corresponding improvement in quality of life. This treatment seems to be a viable and safe alternative to short-acting glucocorticoids. CLINICAL QUESTION/LEVEL OF EVIDENCE Therapeutic, II.
Collapse
Affiliation(s)
- Raimund Winter
- From the Division of Plastic, Aesthetic, and Reconstructive Surgery, Department of Surgery; Research Unit for Tissue Regeneration, Repair, and Reconstruction
| | - Alexandru-Cristian Tuca
- From the Division of Plastic, Aesthetic, and Reconstructive Surgery, Department of Surgery; Research Unit for Tissue Regeneration, Repair, and Reconstruction
| | - Ivo Justich
- From the Division of Plastic, Aesthetic, and Reconstructive Surgery, Department of Surgery; Research Unit for Tissue Regeneration, Repair, and Reconstruction
| | - Sebastian Tschauner
- Division of Pediatric Radiology, Department of Radiology, Medical University of Graz
| | - Herwig Friedl
- Institute of Statistics, Graz University of Technology
| | - Werner Girsch
- From the Division of Plastic, Aesthetic, and Reconstructive Surgery, Department of Surgery; Research Unit for Tissue Regeneration, Repair, and Reconstruction
| | - Patricia Lebo
- From the Division of Plastic, Aesthetic, and Reconstructive Surgery, Department of Surgery; Research Unit for Tissue Regeneration, Repair, and Reconstruction
| | - Robert Zrim
- From the Division of Plastic, Aesthetic, and Reconstructive Surgery, Department of Surgery; Research Unit for Tissue Regeneration, Repair, and Reconstruction
| | - David Benjamin Lumenta
- From the Division of Plastic, Aesthetic, and Reconstructive Surgery, Department of Surgery; Research Unit for Tissue Regeneration, Repair, and Reconstruction
| | - Lars-P Kamolz
- From the Division of Plastic, Aesthetic, and Reconstructive Surgery, Department of Surgery; Research Unit for Tissue Regeneration, Repair, and Reconstruction
- Cooperative Centre for Regenerative Medicine, Joanneum Research GmbH
| |
Collapse
|
3
|
Hasiba-Pappas S, Kamolz LP, Luze H, Nischwitz SP, Lumenta DB, Winter R. Regenerative Therapies for Basal Thumb Arthritis-A Systematic Review. Int J Mol Sci 2023; 24:14909. [PMID: 37834357 PMCID: PMC10573355 DOI: 10.3390/ijms241914909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 10/02/2023] [Accepted: 10/03/2023] [Indexed: 10/15/2023] Open
Abstract
Basal thumb arthritis is a painful and debilitating pathology that can severely reduce a patients' quality of life. Common therapies include oral pain control, local steroid injections and/or surgery. Yet, therapeutic data on long-term improvement and even cartilage repair are scarce. This review aims to present the currently available literature on novel therapies for basal thumb arthritis, including platelet-rich plasma (PRP), fat grafting and phototherapy, and investigate their potential efficacy. The entire OVID database and PubMed were searched for studies containing the topics PRP injection, lipofilling, laser treatment and regenerative treatment for carpometacarpal arthritis. Seven studies on the effect of fat tissue on basal thumb arthritis were found. Four authors reported on PRP injections, one RCT examined a combinational treatment of PRP and fat grafting, another phototherapy for the thumb joint and one prospective trial on chondrocyte transplantation was found. Pain improvement and decreased impairment were reported in the majority of PRP and/or fat grafting studies as well as after chondrocyte implantation. Phototherapy did not significantly improve the condition. This review revealed that only limited data on regenerative therapies for carpometacarpal arthritis are currently available, yet PRP and lipofilling show promising results and merit further investigation.
Collapse
Affiliation(s)
- Sophie Hasiba-Pappas
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 5, A-8036 Graz, Austria; (S.H.-P.); (L.-P.K.); (D.B.L.)
| | - Lars-P. Kamolz
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 5, A-8036 Graz, Austria; (S.H.-P.); (L.-P.K.); (D.B.L.)
- COREMED—Cooperative Centre for Regenerative Medicine, Joanneum Research GmbH, Neue Stiftingtalstr. 2, A-8010 Graz, Austria
| | - Hanna Luze
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 5, A-8036 Graz, Austria; (S.H.-P.); (L.-P.K.); (D.B.L.)
| | - Sebastian P. Nischwitz
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 5, A-8036 Graz, Austria; (S.H.-P.); (L.-P.K.); (D.B.L.)
| | - David B. Lumenta
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 5, A-8036 Graz, Austria; (S.H.-P.); (L.-P.K.); (D.B.L.)
| | - Raimund Winter
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 5, A-8036 Graz, Austria; (S.H.-P.); (L.-P.K.); (D.B.L.)
| |
Collapse
|
4
|
Winter R, Hasiba-Pappas S, Kamolz LP, Tschauner S, Bamer O, Tuca AC, Luze H, Nischwitz SP, Michelitsch B, Friedl H, Lumenta DB, Girsch W. Radiological Influencing Factors in the Diagnosis of Painful Habitual Instability of the Thumb Basal Joint as a Precursor of Carpometacarpal Arthritis of the Thumb-A Retrospective Study. J Pers Med 2023; 13:jpm13050704. [PMID: 37240874 DOI: 10.3390/jpm13050704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 04/02/2023] [Accepted: 04/20/2023] [Indexed: 05/28/2023] Open
Abstract
BACKGROUND Painful habitual instability of the thumb basal joint (PHIT) is a rarely diagnosed condition that can severely impair hand function. Furthermore, it can increase the risk of developing carpometacarpal arthritis of the thumb (CMAOT). Clinical examination and radiographic imaging provide the foundation for a correct diagnosis, but early detection is still challenging. We investigated two objective, radiographically obtainable parameters as potential risk factors for PHIT. METHODS Clinical data and radiographic images of 33 patients suffering from PHIT were collected and compared to those of 35 people serving as the control group. The two main objectives, the slope angle and the bony offset of the thumb joint, were gathered from the X-rays and statistically analyzed. RESULTS The analysis showed no differences between the study and the control group concerning the slope angle. Gender and the bony offset, on the other hand, had a significant influence. Female sex and higher offset values were associated with an increased risk of PHIT. CONCLUSIONS The results of this study prove a connection between a high bony offset and PHIT. We believe this information can be valuable in early detection and will allow more efficient treatment of this condition in the future.
Collapse
Affiliation(s)
- Raimund Winter
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 5, A-8036 Graz, Austria
| | - Sophie Hasiba-Pappas
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 5, A-8036 Graz, Austria
| | - Lars-P Kamolz
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 5, A-8036 Graz, Austria
- COREMED-Cooperative Centre for Regenerative Medicine, Joanneum Research GmbH, Neue Stiftingtalstr. 2, A-8010 Graz, Austria
| | - Sebastian Tschauner
- Division of Pediatric Radiology, Department of Radiology, Medical University of Graz, A-8036 Graz, Austria
| | - Oskar Bamer
- Department of Orthopedics and Trauma Surgery, Division of Trauma Surgery, Medical University Vienna, A-1090 Vienna, Austria
| | - Alexandru Cristian Tuca
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 5, A-8036 Graz, Austria
| | - Hanna Luze
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 5, A-8036 Graz, Austria
| | - Sebastian P Nischwitz
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 5, A-8036 Graz, Austria
| | - Birgit Michelitsch
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 5, A-8036 Graz, Austria
| | - Herwig Friedl
- Institute of Statistics, Graz University of Technology, Kopernikusgasse 24, A-8010 Graz, Austria
| | - David Benjamin Lumenta
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 5, A-8036 Graz, Austria
| | - Werner Girsch
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 5, A-8036 Graz, Austria
| |
Collapse
|
5
|
Winter R, Ilnyckyj A. A146 BENIGN GASTRIC ULCER COMPLICATED BY GASTROJEJUNAL FISTULA FORMATION HEALED WITH PROTON-PUMP INHIBITOR. J Can Assoc Gastroenterol 2023. [PMCID: PMC9991190 DOI: 10.1093/jcag/gwac036.146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/09/2023] Open
Abstract
Abstract
Background
We report a case of a benign gastric ulcer (GU) complicated by gastrojenunal (GJ) fistulization which healed with proton-pump inhibitor (PPI) therapy. It presented in an elderly malnourished patient.
Purpose
To highlight this rare complication of benign peptic ulcer disease, as only 13 similar cases are reported. Additionally, our case is one of the few demonstrating medical treatment can effectively heal both the ulcer and GJ fistula, thus obviating the need for surgery.
Method
A detailed chart review was conducted to summarize all salient clinical data. Using PubMed database, a comprehensive literature review identified similar cases using MeSH terms such as “gastrojejunal”, “fistula”, and “ulcer” under the case report filter.
Result(s)
An 83-year-old previously healthy woman presented with four weeks of weakness, abdominal pain, and nausea. She denied any overt GI bleeding or NSAID use. Physical exam demonstrated cachexia (36.6kg) with benign abdominal and rectal examinations. Initial workup revealed anemia (hemoglobin of 38g/L), iron deficiency, hypoalbuminemia (20g/L) and depleted B12 (108pmol/L). She was started on IV pantoprazole and transfused 3 units of red cells.
A gastroscopy revealed a giant, penetrating gastric ulcer at the lesser curvature. The ulcer base showed protruding tissue consistent with a segment of intestine (Figure 1 - left image). Examination to the distal duodenum was normal. Biopsies of the ulcer edge were negative for neoplasia. Urease testing of antrum and body samples were negative. CT scan demonstrated a 3.1 cm gastric ulcer with a linear tract communicating with the proximal jejunum, confirming the endoscopic impression.
Surgical consultation was obtained; conservative treatment was advised given her age and cachexia. Calorie intake was optimized and the patient commenced twice daily PPI. She rapidly gained 7 kg in the community, accompanied by normalization of albumin (33g/L) and B12 (293 pmol/L) levels. Hemoglobin remained stable near 100g/L after initial transfusion. At month three, repeat gastroscopy was performed. The ulcer and fistula had completely healed. (Figure 1 - right image).
Image
Conclusion(s)
Gastro-enteric fistulas complicating benign ulcers are rare. When described, other sites, such as gastroduodenal, are more common. Direct gastrojejunal fistulization is less favorable due to the anatomy of the mesentery. The literature reports only 13 gastrojejunal fistulas complicating benign ulcers. In other cases, unique risk factors are reported (malignancy, prior gastric surgery). Only 3 of 13 reported cases resolved with medication alone. The overwhelming majority required surgery. Notably, many of the case reports pre-date the introduction of proton-pump inhibitors.
The etiology of our patient’s ulcer was benign but remains undefined. ASA use was excluded on history, and H. pylori sampling was negative. We speculate profound malnutrition placed her at risk for poor healing and thus contributed to the extensive disease complicated by fistula.
Please acknowledge all funding agencies by checking the applicable boxes below
None
Disclosure of Interest
None Declared
Collapse
Affiliation(s)
- R Winter
- Department of Medicine - Gastroenterology, University of Manitoba , Winnipeg , Canada
| | - A Ilnyckyj
- Department of Medicine - Gastroenterology, University of Manitoba , Winnipeg , Canada
| |
Collapse
|
6
|
Reischies FMJ, Tiefenbacher F, Holzer-Geissler JCJ, Wolfsberger C, Eylert G, Mischitz M, Pregartner G, Meikl T, Winter R, Kamolz LP, Lumenta DB. BMI and Revision Surgery for Abdominoplasties: Complication Definitions Revisited Using the Clavien-Dindo Classification. Plast Reconstr Surg Glob Open 2023; 11:e4411. [PMID: 36798721 PMCID: PMC9925103 DOI: 10.1097/gox.0000000000004411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 04/12/2022] [Indexed: 02/15/2023]
Abstract
After body contouring surgery of the lower trunk (CSLT), the definition, rate (4%-70%), and documentation of complications vary. Objectives We analyzed the effect of risk factors on the outcome based on the Clavien-Dindo classification (CDC) after CSLT surgery and polled postoperative satisfaction among patients. Methods All patients undergoing CSLT from 2001 to 2016 were included and were classified according to the CDC for postoperative events. Statistical analysis included proportional odds logistic regression analysis. We polled patients to grade their satisfaction with the postoperative result and whether they would have the operation performed again. Results A total of 265 patients were included: 60 (22.6%), 25 (9.4%), 28 (10.6%), and 21 (7.9%) were in CDC grades I, II, IIIa, and IIIb, respectively. A high preoperative body mass index significantly increased the odds for a postoperative event requiring revision surgery under general anesthesia (CDC grade IIIb, odds ratio 0.93, 95% confidence interval 0.89-0.97, P = 0.001). One-hundred twenty-eight patients (48.3%) participated in the poll: 101 (78.9%) were either happy or content with the postoperative results, and 117 (91.4%) would have the procedure performed again, including all nine patients with CDC grade IIIb. Conclusions Our results confirm that a high body mass index is a statistically significant risk factor for requiring major revision surgery after CSLT. Despite being a complication prone intervention, postoperative satisfaction after CSLT was ranked favorably in our sample. We recommend that the CDC be used in all surgical specialties to evaluate complications and permit future comparability of pooled data.
Collapse
Affiliation(s)
- Frederike M. J. Reischies
- From the Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Fabian Tiefenbacher
- From the Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Judith C. J. Holzer-Geissler
- From the Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria,COREMED—Cooperative Centre for Regenerative Medicine, Joanneum Research Forschungsgesellschaft mbH, Graz, Austria
| | - Christina Wolfsberger
- From the Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria,Division of Neonatology, Department of Pediatric and Adolescent Medicine, Medical University of Graz, Graz, Austria
| | - Gertraud Eylert
- From the Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Madeleine Mischitz
- From the Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Gudrun Pregartner
- Institute for Medical Informatics, Statistics und Documentation, Medical University of Graz, Graz, Austriaand
| | - Tobias Meikl
- Department of Surgery, St John of God Hospital, Graz, Austria
| | - Raimund Winter
- From the Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Lars-Peter Kamolz
- From the Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria,COREMED—Cooperative Centre for Regenerative Medicine, Joanneum Research Forschungsgesellschaft mbH, Graz, Austria
| | - David B. Lumenta
- From the Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| |
Collapse
|
7
|
Winter R, Hasiba-Pappas SK, Tuca AC, Zrim R, Nischwitz S, Popp D, Lumenta DB, Girsch W, Kamolz LP. Autologous Fat and Platelet-Rich Plasma Injections in Trapeziometacarpal Osteoarthritis: A Systematic Review and Meta-Analysis. Plast Reconstr Surg 2023; 151:119-131. [PMID: 36219860 DOI: 10.1097/prs.0000000000009789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
BACKGROUND For the treatment of carpometacarpal arthritis of the thumb, various therapies are used. Infiltration therapy with autologous substances such as platelet-rich plasma and autologous fat have recently gained increasing attention because of beneficial pain-reducing effects in arthritis and the associated regenerative potential. However, the extent of clinical evidence in this area and how well autologous substances work in terms of pain reduction and improvements in hand function remain unclear. METHODS A systematic review and meta-analysis were conducted to evaluate the current evidence and to provide more insight into pain reduction and improvement in hand function after infiltration of autologous substances. The authors identified 11 clinical trials, of which we included eight in the meta-analysis. RESULTS Autologous substances achieved a good and long-lasting pain reduction, which may also be accompanied by corresponding improvement in hand function. Autologous substances appear to be more effective than corticoid infiltrations. The infiltration of autologous fat seems to be particularly promising in more advanced stages of carpometacarpal arthritis of the thumb. Our meta-analysis showed a mean pain reduction of 2.4 to 3 in visual analogue scale score and a reduction of 18 to 19 points in the Disabilities of the Arm, Shoulder, and Hand questionnaire after infiltration with autologous substances. CONCLUSION Both platelet-rich plasma and autologous fat infiltration offer an efficient and long-lasting, minimally invasive therapy option in the treatment of carpometacarpal arthritis of the thumb.
Collapse
Affiliation(s)
- Raimund Winter
- From the Division of Plastic, Aesthetic, and Reconstructive Surgery, Department of Surgery, Research Unit for Tissue Regeneration, Repair and Reconstruction
| | - Sophie K Hasiba-Pappas
- From the Division of Plastic, Aesthetic, and Reconstructive Surgery, Department of Surgery, Research Unit for Tissue Regeneration, Repair and Reconstruction
| | - Alexandru-Cristian Tuca
- From the Division of Plastic, Aesthetic, and Reconstructive Surgery, Department of Surgery, Research Unit for Tissue Regeneration, Repair and Reconstruction
| | - Robert Zrim
- From the Division of Plastic, Aesthetic, and Reconstructive Surgery, Department of Surgery, Research Unit for Tissue Regeneration, Repair and Reconstruction
| | - Sebastian Nischwitz
- From the Division of Plastic, Aesthetic, and Reconstructive Surgery, Department of Surgery, Research Unit for Tissue Regeneration, Repair and Reconstruction
| | - Daniel Popp
- From the Division of Plastic, Aesthetic, and Reconstructive Surgery, Department of Surgery, Research Unit for Tissue Regeneration, Repair and Reconstruction
| | - David Benjamin Lumenta
- From the Division of Plastic, Aesthetic, and Reconstructive Surgery, Department of Surgery, Research Unit for Tissue Regeneration, Repair and Reconstruction
- Research Unit for Digital Surgery, Medical University of Graz
| | - Werner Girsch
- From the Division of Plastic, Aesthetic, and Reconstructive Surgery, Department of Surgery, Research Unit for Tissue Regeneration, Repair and Reconstruction
| | - Lars-P Kamolz
- From the Division of Plastic, Aesthetic, and Reconstructive Surgery, Department of Surgery, Research Unit for Tissue Regeneration, Repair and Reconstruction
- COREMED, the Cooperative Centre for Regenerative Medicine, Joanneum Research GmbH
| |
Collapse
|
8
|
Berger MF, Winter R, Tuca AC, Michelitsch B, Schenkenfelder B, Hartmann R, Giretzlehner M, Reishofer G, Kamolz LP, Lumenta DB. Workflow assessment of an augmented reality application for planning of perforator flaps in plastic reconstructive surgery: Game or game changer? Digit Health 2023; 9:20552076231173554. [PMID: 37179745 PMCID: PMC10170605 DOI: 10.1177/20552076231173554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 04/14/2023] [Indexed: 05/15/2023] Open
Abstract
Objective In contrast to the rising amount of financial investments for research and development in medical technology worldwide is the lack of usability and clinical readiness of the produced systems. We evaluated an augmented reality (AR) setup under development for preoperative perforator vessel mapping for elective autologous breast reconstruction. Methods In this grant-supported research pilot, we used magnetic resonance angiography data (MR-A) of the trunk to superimpose the scans on the corresponding patients with hands-free AR goggles to identify regions-of-interest for surgical planning. Perforator location was assessed using MR-A imaging (MR-A projection) and Doppler ultrasound data (3D distance) and confirmed intraoperatively in all cases. We evaluated usability (System Usability Scale, SUS), data transfer load and documented personnel hours for software development, correlation of image data, as well as processing duration to clinical readiness (time from MR-A to AR projections per scan). Results All perforator locations were confirmed intraoperatively, and we found a strong correlation between MR-A projection and 3D distance measurements (Spearman r = 0.894). The overall usability (SUS) was 67 ± 10 (=moderate to good). The presented setup for AR projections took 173 min to clinical readiness (=availability on AR device per patient). Conclusion In this pilot, we calculated development investments based on project-approved grant-funded personnel hours with a moderate to good usability outcome resulting from some limitations: assessment was based on one-time testing with no previous training, a time lag of AR visualizations on the body and difficulties in spatial AR orientation. The use of AR systems can provide new opportunities for future surgical planning, but has more potential for educational (e.g., patient information) or training purposes of medical under- and postgraduates (spatial recognition of imaging data associated with anatomical structures and operative planning). We expect future usability improvements with refined user interfaces, faster AR hardware and artificial intelligence-enhanced visualization techniques.
Collapse
Affiliation(s)
- Matthias Fabian Berger
- Research Unit for Digital Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Raimund Winter
- Research Unit for Digital Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Alexandru-Cristian Tuca
- Research Unit for Digital Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Birgit Michelitsch
- Research Unit for Digital Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | | | | | | | - Gernot Reishofer
- Radiology Lab, Department of Radiology, Medical University of Graz, Graz, Austria
| | - Lars-Peter Kamolz
- Research Unit for Digital Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - David Benjamin Lumenta
- Research Unit for Digital Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| |
Collapse
|
9
|
Winter R, Pearson GME. Exploring the Challenges of Frailty in Medical Education. J Frailty Aging 2023; 12:134-138. [PMID: 36946710 DOI: 10.14283/jfa.2023.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Frailty is common, and medical students and doctors across all specialties will look after patients with frailty. The General Medical Council requires UK medical schools to teach and assess on frailty, and national geriatric societies across the globe include frailty in their recommended undergraduate curricula. However, frailty in medical education is challenging; there is uncertainty around what frailty is in medical education, including how and when to teach it; controversies in mapping teaching and assessments to recommended curricula; patients with frailty can be challenging to include in teaching and assessments due to functional, sensory, and/or cognitive impairments; an individual with frailty is likely to present atypically, with less predictable recovery, introducing complexities into clinical reasoning that can be challenging for students; the term frailty is often negatively perceived, used colloquially and avoided in educational interactions. This commentary discusses these challenges around frailty in undergraduate medical education and serves to provoke discussion about why frailty is so challenging to teach and learn about, including recommendations for how frailty education could be improved.
Collapse
Affiliation(s)
- R Winter
- Grace ME Pearson, Ageing and Movement Research Group, University of Bristol, 1-5 Whiteladies Road, Bristol, BS8 1NU, United Kingdom, , Twitter: @GraceInvaders, ORCID: https://orcid.org/0000-0002-3791-7504
| | | |
Collapse
|
10
|
Luze H, Schwarz A, Philipp Nischwitz S, Kolb D, Bounab K, Zrim R, Winter R, Kamolz LP, Rappl T, Kotzbeck P. Autologous Fat Grafting in Reconstructive Breast Surgery: Clinically Relevant Factors Affecting the Graft Take. Aesthet Surg J 2022; 42:NP745-NP755. [PMID: 35724655 DOI: 10.1093/asj/sjac166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Autologous fat grafting is an effective tool for soft tissue augmentation in reconstructive breast surgery. Despite the major advantages of this minimally invasive approach, the unpredictability of graft survival presents challenges. OBJECTIVES No clear consensus on the optimal technique has yet been published and well-defined prospective studies investigating impairing factors are lacking. This aim of this study was to generate valuable fundamental data. METHODS Ten female patients undergoing elective autologous fat grafting after nipple-sparing mastectomy were enrolled. Punch biopsies and lipoaspirates were collected from the harvest site for histologic, gene expression, and scanning electron microscopic analysis. Noninvasive Lipometer measurements determining the subcutaneous adipose tissue thickness at the graft site were used to calculate the respective take rate. Patient- and surgery-related data were acquired and correlated with the take rate. RESULTS A statistically relevant correlation between the take rate and the existing mean subcutaneous adipose tissue thickness at the grafted breast prior to surgery was observed. An approximate correlation was identified regarding the number of previous grafting sessions, body weight, and BMI. No statistically significant correlation was demonstrated for age, harvest site, or the mean adipocyte size. A lower level of cell damage was observed in scanning electron microscopic samples of washed lipoaspirates; and a strong indirect correlation with the expression of the adipocyte markers FABP4 and PLIN1 was apparent. CONCLUSIONS Factors correlating to the take rate were identified. Future studies investigating the clinical relevance of each impairing factor are essential to contribute to the optimization of this valuable method. LEVEL OF EVIDENCE: 4
Collapse
Affiliation(s)
- Hanna Luze
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Anna Schwarz
- CoreMed - Cooperative Centre for Regenerative Medicine, Joanneum Research, Forschungsgesellschaft mbH, Graz, Austria
| | - Sebastian Philipp Nischwitz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Dagmar Kolb
- Core Facility Ultrastructure Analysis, Medical University of Graz, Graz, Austria
| | - Kaddour Bounab
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Robert Zrim
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Raimund Winter
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Lars-Peter Kamolz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Thomas Rappl
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Petra Kotzbeck
- CoreMed - Cooperative Centre for Regenerative Medicine, Joanneum Research, Forschungsgesellschaft mbH, Graz, Austria
| |
Collapse
|
11
|
Luze H, Einsiedler J, Nischwitz SP, Winter R, Kolb D, Kamolz LP, Kotzbeck P, Rappl T. Quality and Vitality of Autologous Fat Grafts Harvested by Different Techniques: A Clinical Comparison Study. Aesthet Surg J 2022; 42:1416-1424. [PMID: 35882529 DOI: 10.1093/asj/sjac192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Unpredictable outcomes with autologous fat grafting due to reabsorption processes present a major challenge for healthcare providers and patients. A higher number of viable adipocytes is considered to result in a higher volume being retained. Although various adverse factors have been extensively researched, other potential parameters have been less investigated or even neglected. OBJECTIVE The aim of this study was to investigate the harvesting process of adipose tissue as the primary cause of cell damage and to determine the risk factors associated with low cell survival. METHODS Thirty-nine male and female subjects undergoing planned elective liposuction or abdominoplasty were enrolled. Forty-seven lipoaspirates harvested by different liposuction techniques were analyzed. RNA isolation and real-time polymerase chain reaction was performed to elucidate differences in the expression of various adipocyte markers. Furthermore, scanning electron microscopy was performed on various samples to determine the cell damage caused by the different techniques. RESULTS A statistically significant lower expression of peroxisome proliferator-activated receptor γ was detected in subjects with a higher BMI. A trend towards a lower expression of perilipin 1 in lipoaspirates harvested by a super wet + ultrasound technique, compared with dry and super wet techniques, was shown. The lowest level of cell damage determined from scanning electron microscopy images was in lipoaspirates harvested by the super wet + ultrasound technique, and this level was statistically significantly different from those obtained by the 2 other techniques. CONCLUSIONS Optimization of the outcome in autologous fat grafting may be feasible by targeting and optimizing the harvesting process as a main risk factor for impaired adipocyte viability. Ultrasound-assisted liposuction might be considered a suitable harvesting technique. LEVEL OF EVIDENCE: 5
Collapse
Affiliation(s)
- Hanna Luze
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Johanna Einsiedler
- COREMED-Cooperative Centre for Regenerative Medicine, Joanneum Research Forschungsgesellschaft mbH, Graz, Austria
| | - Sebastian Philipp Nischwitz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Raimund Winter
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Dagmar Kolb
- Core Facility Ultrastructure Analysis, Medical University of Graz, Austria
| | - Lars-Peter Kamolz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Petra Kotzbeck
- COREMED-Cooperative Centre for Regenerative Medicine, Joanneum Research Forschungsgesellschaft mbH, Graz, Austria
| | - Thomas Rappl
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| |
Collapse
|
12
|
Papaluca T, Craigie A, McDonald L, Edwards A, Winter R, Hoang A, Pappas A, Waldron A, McCoy K, Stoove M, Doyle J, Hellard M, Holmes J, MacIsaac M, Desmond P, Iser D, Thompson A. Care navigation increases initiation of hepatitis C treatment following release from prison in a prospective randomised controlled trial: The C-LINK Study. Open Forum Infect Dis 2022; 9:ofac350. [PMID: 35949401 PMCID: PMC9356682 DOI: 10.1093/ofid/ofac350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 07/27/2022] [Indexed: 11/13/2022] Open
Abstract
Background Prison-based hepatitis C treatment is safe and effective; however, many individuals are released untreated due to time or resource constraints. On community re-entry, individuals face a number of immediate competing priorities, and in this context, linkage to hepatitis C care is low. Interventions targeted at improving healthcare continuity after prison release have yielded positive outcomes for other health diagnoses; however, data regarding hepatitis C transitional care are limited. Methods We conducted a prospective randomized controlled trial comparing a hepatitis C care navigator intervention with standard of care for individuals released from prison with untreated hepatitis C infection. The primary outcome was prescription of hepatitis C direct-acting antivirals (DAA) within 6 months of release. Results Forty-six participants were randomized. The median age was 36 years and 59% were male. Ninety percent (n = 36 of 40) had injected drugs within 6 months before incarceration. Twenty-two were randomized to care navigation and 24 were randomized to standard of care. Individuals randomized to the intervention were more likely to commence hepatitis C DAAs within 6 months of release (73%, n = 16 of 22 vs 33% n = 8 of 24, P < .01), and the median time between re-entry and DAA prescription was significantly shorter (21 days [interquartile range {IQR}, 11–42] vs 82 days [IQR, 44–99], P = .049). Conclusions Care navigation increased hepatitis C treatment uptake among untreated individuals released from prison. Public policy should support similar models of care to promote treatment in this high-risk population. Such an approach will help achieve hepatitis C elimination as a public health threat.
Collapse
Affiliation(s)
- T Papaluca
- Department of Gastroenterology, St Vincent’s Hospital and the University of Melbourne , Victoria , Australia
| | - A Craigie
- Department of Gastroenterology, St Vincent’s Hospital and the University of Melbourne , Victoria , Australia
| | - L McDonald
- Department of Gastroenterology, St Vincent’s Hospital and the University of Melbourne , Victoria , Australia
| | - A Edwards
- Department of Gastroenterology, St Vincent’s Hospital and the University of Melbourne , Victoria , Australia
| | - R Winter
- Department of Gastroenterology, St Vincent’s Hospital and the University of Melbourne , Victoria , Australia
- Burnet Institute , Melbourne, Victoria , Australia
| | - A Hoang
- Department of Gastroenterology, St Vincent’s Hospital and the University of Melbourne , Victoria , Australia
| | - A Pappas
- Department of Gastroenterology, St Vincent’s Hospital and the University of Melbourne , Victoria , Australia
| | - A Waldron
- Department of Gastroenterology, St Vincent’s Hospital and the University of Melbourne , Victoria , Australia
| | - K McCoy
- Department of Gastroenterology, St Vincent’s Hospital and the University of Melbourne , Victoria , Australia
| | - M Stoove
- Burnet Institute , Melbourne, Victoria , Australia
- Department of Epidemiology and Preventative Medicine, Monash University , Victoria , Australia
| | - J Doyle
- Burnet Institute , Melbourne, Victoria , Australia
- Department of Epidemiology and Preventative Medicine, Monash University , Victoria , Australia
- Department of Infectious Diseases, The Alfred and Monash University , Melbourne, Victoria , Australia
| | - M Hellard
- Burnet Institute , Melbourne, Victoria , Australia
- Department of Epidemiology and Preventative Medicine, Monash University , Victoria , Australia
- Department of Infectious Diseases, The Alfred and Monash University , Melbourne, Victoria , Australia
| | - J Holmes
- Department of Gastroenterology, St Vincent’s Hospital and the University of Melbourne , Victoria , Australia
| | - M MacIsaac
- Department of Gastroenterology, St Vincent’s Hospital and the University of Melbourne , Victoria , Australia
| | - P Desmond
- Department of Gastroenterology, St Vincent’s Hospital and the University of Melbourne , Victoria , Australia
| | - D Iser
- Department of Gastroenterology, St Vincent’s Hospital and the University of Melbourne , Victoria , Australia
| | - A Thompson
- Department of Gastroenterology, St Vincent’s Hospital and the University of Melbourne , Victoria , Australia
| |
Collapse
|
13
|
Moron M, Al-Masoodi A, Lovato C, Reiser M, Randolph L, Surmeier G, Bolle J, Westermeier F, Sprung M, Winter R, Paulus M, Gutt C. Gelation Dynamics upon Pressure-Induced Liquid-Liquid Phase Separation in a Water-Lysozyme Solution. J Phys Chem B 2022; 126:4160-4167. [PMID: 35594491 DOI: 10.1021/acs.jpcb.2c01947] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Employing X-ray photon correlation spectroscopy, we measure the kinetics and dynamics of a pressure-induced liquid-liquid phase separation (LLPS) in a water-lysozyme solution. Scattering invariants and kinetic information provide evidence that the system reaches the phase boundary upon pressure-induced LLPS with no sign of arrest. The coarsening slows down with increasing quench depths. The g2 functions display a two-step decay with a gradually increasing nonergodicity parameter typical for gelation. We observe fast superdiffusive (γ ≥ 3/2) and slow subdiffusive (γ < 0.6) motion associated with fast viscoelastic fluctuations of the network and a slow viscous coarsening process, respectively. The dynamics age linearly with time τ ∝ tw, and we observe the onset of viscoelastic relaxation for deeper quenches. Our results suggest that the protein solution gels upon reaching the phase boundary.
Collapse
Affiliation(s)
- M Moron
- Fakultät Physik/DELTA, TU Dortmund, 44221 Dortmund, Germany
| | - A Al-Masoodi
- Department Physik, Naturwissenschaftlich-Technische Fakultät, Universität Siegen, 57068 Siegen, Germany
| | - C Lovato
- Department Physik, Naturwissenschaftlich-Technische Fakultät, Universität Siegen, 57068 Siegen, Germany
| | - M Reiser
- Department of Physics, Stockholm University, 10691 Stockholm, Sweden
| | - L Randolph
- Department Physik, Naturwissenschaftlich-Technische Fakultät, Universität Siegen, 57068 Siegen, Germany
| | - G Surmeier
- Fakultät Physik/DELTA, TU Dortmund, 44221 Dortmund, Germany
| | - J Bolle
- Fakultät Physik/DELTA, TU Dortmund, 44221 Dortmund, Germany
| | - F Westermeier
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - M Sprung
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - R Winter
- Fakultät Chemie und Chemische Biologie, Physikalische Chemie, TU Dortmund, 44227 Dortmund, Germany
| | - M Paulus
- Fakultät Physik/DELTA, TU Dortmund, 44221 Dortmund, Germany
| | - C Gutt
- Department Physik, Naturwissenschaftlich-Technische Fakultät, Universität Siegen, 57068 Siegen, Germany
| |
Collapse
|
14
|
Hasiba-Pappas SK, Tuca AC, Luze H, Nischwitz SP, Zrim R, Geißler JC, Lumenta DB, Kamolz LP, Winter R. Platelet-Rich Plasma in Plastic Surgery: A Systematic Review. Transfus Med Hemother 2022; 49:129-142. [PMID: 35813605 PMCID: PMC9210026 DOI: 10.1159/000524353] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 03/21/2022] [Indexed: 11/16/2023] Open
Abstract
INTRODUCTION Platelet-rich plasma (PRP) is gaining popularity and is applied in a variety of clinical settings. This review aims to present and evaluate available evidence regarding the use of PRP in various applications in plastic surgery. METHODS PubMed, Web of Science, Medline, and Embase were searched using predefined MeSH terms to identify studies concerning the application of PRP alone or in combination with fat grafting for plastic surgery. The search was limited to articles in English or German. Animal studies, in vitro studies, case reports, and case series were excluded. RESULTS Of 50 studies included in this review, eleven studies used PRP for reconstruction or wound treatment, eleven for cosmetic procedures, four for hand surgery, two for burn injuries, five for craniofacial disorders, and 17 as an adjuvant to fat grafting. Individual study characteristics were summarized. Considerable variation in preparation protocols and treatment strategies were observed. Even though several beneficial effects of PRP therapy were described, significance was not always demonstrated, and some studies yielded conflicting results. Efficacy of PRP was not universally proven in every field of application. CONCLUSION This study presents an overview of current PRP treatment options and outcomes in plastic surgery. PRP may be beneficial for some indications explored in this review; however, currently available data are insufficient and systematic evaluation is limited due to high heterogeneity in PRP preparation and treatment regimens. Further randomized controlled trials employing standardized protocols are warranted.
Collapse
Affiliation(s)
- Sophie K. Hasiba-Pappas
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Alexandru Cristian Tuca
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Hanna Luze
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Sebastian P. Nischwitz
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Robert Zrim
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Judith C.J. Geißler
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - David Benjamin Lumenta
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Lars-P. Kamolz
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
- COREMED − Cooperative Centre for Regenerative Medicine, Joanneum Research GmbH, Graz, Austria
| | - Raimund Winter
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| |
Collapse
|
15
|
Tuca AC, Bernardelli de Mattos I, Funk M, Winter R, Palackic A, Groeber-Becker F, Kruse D, Kukla F, Lemarchand T, Kamolz LP. Orchestrating the Dermal/Epidermal Tissue Ratio during Wound Healing by Controlling the Moisture Content. Biomedicines 2022; 10:biomedicines10061286. [PMID: 35740308 PMCID: PMC9219632 DOI: 10.3390/biomedicines10061286] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 05/26/2022] [Accepted: 05/27/2022] [Indexed: 01/13/2023] Open
Abstract
A balanced and moist wound environment and surface increases the effect of various growth factors, cytokines, and chemokines, stimulating cell growth and wound healing. Considering this fact, we tested in vitro and in vivo water evaporation rates from the cellulose dressing epicitehydro when combined with different secondary dressings as well as the resulting wound healing efficacy in a porcine donor site model. The aim of this study was to evaluate how the different rates of water evaporation affected wound healing efficacy. To this end, epicitehydro primary dressing, in combination with different secondary dressing materials (cotton gauze, JELONET◊, AQUACEL® Extra ™, and OPSITE◊ Flexifix), was placed on 3 × 3 cm-sized dermatome wounds with a depth of 1.2 mm on the flanks of domestic pigs. The healing process was analyzed histologically and quantified by morphometry. High water evaporation rates by using the correct secondary dressing, such as cotton gauze, favored a better re-epithelialization in comparison with the low water evaporation resulting from an occlusive secondary dressing, which favored the formation of a new and intact dermal tissue that nearly fully replaced all the dermis that was removed during wounding. This newly available evidence may be of great benefit to clinical wound management.
Collapse
Affiliation(s)
- Alexandru-Cristian Tuca
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University of Graz, 8036 Graz, Austria; (R.W.); (A.P.); (L.-P.K.)
- Correspondence: ; Tel.: +43-316-385-30742
| | - Ives Bernardelli de Mattos
- Department Tissue Engineering & Regenerative Medicine (TERM), University Hospital Würzburg, 97080 Würzburg, Germany; (I.B.d.M.); (F.G.-B.); (D.K.)
| | | | - Raimund Winter
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University of Graz, 8036 Graz, Austria; (R.W.); (A.P.); (L.-P.K.)
| | - Alen Palackic
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University of Graz, 8036 Graz, Austria; (R.W.); (A.P.); (L.-P.K.)
| | - Florian Groeber-Becker
- Department Tissue Engineering & Regenerative Medicine (TERM), University Hospital Würzburg, 97080 Würzburg, Germany; (I.B.d.M.); (F.G.-B.); (D.K.)
- Translational Center Regenerative Therapies, Fraunhofer Institute for Silicate Research ISC, 97080 Würzburg, Germany
| | - Daniel Kruse
- Department Tissue Engineering & Regenerative Medicine (TERM), University Hospital Würzburg, 97080 Würzburg, Germany; (I.B.d.M.); (F.G.-B.); (D.K.)
| | - Fabian Kukla
- TPL Path Labs GmbH, 79111 Freiburg, Germany; (F.K.); (T.L.)
| | | | - Lars-Peter Kamolz
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University of Graz, 8036 Graz, Austria; (R.W.); (A.P.); (L.-P.K.)
- Joanneum Research Forschungsgesellschaft mbH, COREMED, 8036 Graz, Austria
| |
Collapse
|
16
|
Luze H, Nischwitz SP, Wurzer P, Winter R, Spendel S, Kamolz LP, Bjelic-Radisic V. Assessment of Mastectomy Skin Flaps for Immediate Reconstruction with Implants via Thermal Imaging—A Suitable, Personalized Approach? J Pers Med 2022; 12:jpm12050740. [PMID: 35629162 PMCID: PMC9145421 DOI: 10.3390/jpm12050740] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/27/2022] [Accepted: 04/29/2022] [Indexed: 01/03/2023] Open
Abstract
Background: Impaired perfusion of the remaining skin flap after subcutaneous mastectomy can cause wound-healing disorders and consecutive necrosis. Personalized intraoperative imaging, possibly performed via the FLIR ONE thermal-imaging device, may assist in flap assessment and detect areas at risk for postoperative complications. Methods: Fifteen female patients undergoing elective subcutaneous mastectomy and immediate breast reconstruction with implants were enrolled. Pre-, intra- and postoperative thermal imaging was performed via FLIR ONE. Potential patient-, surgery- and environment-related risk factors were acquired and correlated with the occurrence of postoperative complications. Results: Wound-healing disorders and mastectomy-skin-flap necrosis occurred in 26.7%, whereby areas expressing intraoperative temperatures less than 26 °C were mainly affected. These complications were associated with a statistically significantly higher BMI, longer surgery duration, lower body and room temperature and a trend towards larger implant sizes. Conclusion: Impaired skin-flap perfusion may be multifactorially conditioned. Preoperative screening for risk factors and intraoperative skin-perfusion assessment via FLIR ONE thermal-imaging device is recommendable to reduce postoperative complications. Intraoperative detectable areas with a temperature of lower than 26 °C are highly likely to develop mastectomy-skin-flap necrosis and early detection allows individual treatment concept adaption, ultimately improving the patient’s outcome.
Collapse
Affiliation(s)
- Hanna Luze
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria; (S.P.N.); (P.W.); (R.W.); (S.S.); (L.-P.K.)
- Correspondence: ; Tel.: +43-316-385-30445; Fax: +43-316-385-59514690
| | - Sebastian Philipp Nischwitz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria; (S.P.N.); (P.W.); (R.W.); (S.S.); (L.-P.K.)
| | - Paul Wurzer
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria; (S.P.N.); (P.W.); (R.W.); (S.S.); (L.-P.K.)
- Burgenländische Krankenanstalten-Ges.m.b.H., 7000 Eisenstadt, Austria
| | - Raimund Winter
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria; (S.P.N.); (P.W.); (R.W.); (S.S.); (L.-P.K.)
| | - Stephan Spendel
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria; (S.P.N.); (P.W.); (R.W.); (S.S.); (L.-P.K.)
| | - Lars-Peter Kamolz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria; (S.P.N.); (P.W.); (R.W.); (S.S.); (L.-P.K.)
- COREMED–Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, 8010 Graz, Austria
- Research Unit for Safety and Sustainability in Healthcare, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria
| | - Vesna Bjelic-Radisic
- Breast Unit, Helios University Hospital, University of Witten Herdecke, 42283 Wuppertal, Germany;
- Division of General Gynaecology, Department of Obstetrics and Gynaecology, Medical University of Graz, 8010 Graz, Austria
| |
Collapse
|
17
|
Tschauner S, Nagy E, Hirling D, Fahmy S, Vasilev P, Gospodinova M, Winter R, Singer G, Sorantin E. Radioulnar interphalangeal joint angles in children and adolescents aged 0 to 19 years. J Hand Surg Eur Vol 2021; 46:954-960. [PMID: 33459137 DOI: 10.1177/1753193420986122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The purpose of this study is to determine the normal ranges of radioulnar (i.e. medial-lateral) finger deviations during growth. We retrospectively measured radioulnar interphalangeal joint angles in 6236 properly aligned thumbs and fingers in trauma radiographs of 4720 patients aged 0 to 19 years. The mean interphalangeal joint angle of the thumb was 0.2° (standard deviation 1.5°). The average proximal interphalangeal joint angles were ulnar deviation of 2.5° (1.7°) for the index, ulnar deviation 1.7° (1.5°) for the middle, radial deviation 1.3° (1.8°) for the ring, radial deviation 2.0° (2.8°) for the little fingers. The distal interphalangeal joint angles were ulnar deviation of 2.5° (1.7°), ulnar deviation 2.1° (1.7°), radial deviation 2.1° (1.7°), radial deviation 5.1° (2.8°) from index to the little fingers. Thumbs were typically straight, whereas the index and middle fingers deviated ulnarly, and ring and little fingers radially. There were no relevant differences in sex or laterality.
Collapse
Affiliation(s)
- Sebastian Tschauner
- Division of Pediatric Radiology, Department of Radiology, Medical University of Graz, Graz, Austria
| | - Eszter Nagy
- Division of Pediatric Radiology, Department of Radiology, Medical University of Graz, Graz, Austria
| | - Dominik Hirling
- Synthetic and Systems Biology Unit, Biological Research Center of the Hungarian Academy of Sciences, Szeged, Hungary.,Doctoral School of Computer Science, University of Szeged, Szeged, Hungary
| | - Sara Fahmy
- Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | | | | | - Raimund Winter
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Georg Singer
- Department of Paediatric and Adolescent Surgery, Medical University of Graz, Graz, Austria
| | - Erich Sorantin
- Division of Pediatric Radiology, Department of Radiology, Medical University of Graz, Graz, Austria
| |
Collapse
|
18
|
Nischwitz SP, Luze H, Schellnegger M, Gatterer SJ, Tuca AC, Winter R, Kamolz LP. Thermal, Hyperspectral, and Laser Doppler Imaging: Non-Invasive Tools for Detection of The Deep Inferior Epigastric Artery Perforators-A Prospective Comparison Study. J Pers Med 2021; 11:jpm11101005. [PMID: 34683146 PMCID: PMC8538291 DOI: 10.3390/jpm11101005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 10/02/2021] [Accepted: 10/04/2021] [Indexed: 11/16/2022] Open
Abstract
Perforator flaps have become one of the leading procedures in microsurgical tissue transfer. Individual defects require a tailored approach to guarantee the most effective treatment. A thorough understanding of the individual vascular anatomy and the location of prominent perforators is of utmost importance and usually requires invasive angiography or at least acoustic Doppler exploration. In this study, we aimed at evaluating different non-invasive imaging modalities as possible alternatives for perforator location detection. After a cooling phase, we performed thermal, hyperspectral and Laser Doppler imaging and visually evaluated a possible detection of the perforator for a period of five minutes with an image taken every minute. We identified the most prominent perforator of the deep inferior epigastric artery by handheld acoustic Doppler in 18 patients. The detected perforator locations were then correlated. Eighteen participants were assessed with six images each per imaging method. We could show a positive match for 94.44%, 38.89%, and 0% of patients and 92.59%, 25.93%, and 0% of images for the methods respectively compared to the handheld acoustic Doppler. Sex, age, abdominal girth, and BMI showed no correlation with a possible visual detection of the perforator in the images. Therefore, thermal imaging can yield valuable supporting data in the individualized procedure planning. Future larger cohort studies are required to better assess the full potential of modern handheld thermal imaging devices.
Collapse
Affiliation(s)
- Sebastian P. Nischwitz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria; (H.L.); (A.-C.T.); (R.W.); (L.-P.K.)
- COREMED—Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, 8010 Graz, Austria;
- Correspondence:
| | - Hanna Luze
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria; (H.L.); (A.-C.T.); (R.W.); (L.-P.K.)
- COREMED—Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, 8010 Graz, Austria;
| | - Marlies Schellnegger
- COREMED—Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, 8010 Graz, Austria;
- Division of Macroscopic and Clinical Anatomy, Medical University of Graz, 8036 Graz, Austria
| | | | - Alexandru-Cristian Tuca
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria; (H.L.); (A.-C.T.); (R.W.); (L.-P.K.)
| | - Raimund Winter
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria; (H.L.); (A.-C.T.); (R.W.); (L.-P.K.)
| | - Lars-Peter Kamolz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria; (H.L.); (A.-C.T.); (R.W.); (L.-P.K.)
- COREMED—Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, 8010 Graz, Austria;
| |
Collapse
|
19
|
Neuwirth M, Ziegler T, Benedikt S, Winter R, Kamolz LP, Schintler M, Rab M, Mueller-Eggenberger M, Mischitz M, Palle W, Hoenck K, Schoellnast H, Janek E, Borenich A, Buerger H. Donor site morbidity after the harvest of microvascular flaps from the medial and lateral femoral condyle region: Objective, radiologic, and patient-reported outcome of a multi-center trial. J Plast Reconstr Aesthet Surg 2021; 75:160-172. [PMID: 34635456 DOI: 10.1016/j.bjps.2021.08.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 06/27/2021] [Accepted: 08/26/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND With the experience-based hypothesis of low donor site morbidity (DSM) for free flaps from the distal femur, this cohort study aimed to evaluate the DSM according to objective and reproducible criteria. METHODS One hundred and fifty-six patients who had a flap harvest from either the medial or lateral femoral condyle region between 2005 and 2017 were included. A retrospective chart review was performed for all patients. In total, 97 patients were available for a follow-up examination. Outcomes were assessed according to objective (Knee Society Score; Larson Knee Score; OAK Score; 0-100 points), patient-reported (IKDC Score; KOOS Score; 0-100 points), and radiologic criteria (Kellgren and Lawrence Score; MRI Osteoarthritis Knee Score). RESULTS The median follow-up time was 1,529 days (range: 248-4,810). The mean Knee Society Score (94.8 ± 10.1), Larson Knee Score (94.5 ± 10.1), and OAK Score (95.5 ± 6.6) showed nearly unimpaired knee function. The overall patient-reported DSM was low (IKDC Score: 86.7 ± 17.4; KOOS Score: 89.3 ± 17.1). Osteochondral (OC) flaps had a significantly higher DSM, regardless of the donor site. Bone flaps did not show any relevant radiologic morbidity in the Kellgren and Lawrence Score. Besides the procedure-associated cartilage lesions at the OC donor sites, MRI Osteoarthritis Knee Score did not show any significant presence of further knee pathologies in the bilateral MRI Scans. The obvious cartilage lesions did not have a relevant impact on the knee function of most patients. CONCLUSION The DSM for bone and soft-tissue flaps from the femoral condyle region is negligible. OC flaps are associated with a significantly higher DSM, although a clinically relevant impact on knee function was not evident in the majority of patients.
Collapse
Affiliation(s)
- Maximilian Neuwirth
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Austria; Departement of Plastic, Aesthetic and Reconstructive Surgery, General Hospital Klagenfurt am Woerthersee, Feschnigstraße 11, Klagenfurt 9020, Austria.
| | - Thomas Ziegler
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Austria
| | - Stefan Benedikt
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Austria
| | - Raimund Winter
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Austria
| | - Lars P Kamolz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Austria
| | - Michael Schintler
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Austria
| | - Matthias Rab
- Departement of Plastic, Aesthetic and Reconstructive Surgery, General Hospital Klagenfurt am Woerthersee, Feschnigstraße 11, Klagenfurt 9020, Austria
| | - Michael Mueller-Eggenberger
- Departement of Plastic, Aesthetic and Reconstructive Surgery, General Hospital Klagenfurt am Woerthersee, Feschnigstraße 11, Klagenfurt 9020, Austria
| | - Madeleine Mischitz
- Departement of Plastic, Aesthetic and Reconstructive Surgery, General Hospital Klagenfurt am Woerthersee, Feschnigstraße 11, Klagenfurt 9020, Austria
| | - Wolfgang Palle
- Department of Trauma Surgery, Hospital Friesach, Austria
| | - Karina Hoenck
- Department of Trauma Surgery, Hospital Friesach, Austria
| | - Helmut Schoellnast
- Division of General Radiology, Department of Radiology, Medical University of Graz, Austria
| | - Elmar Janek
- Division of General Radiology, Department of Radiology, Medical University of Graz, Austria
| | - Andrea Borenich
- Institute for Medical Informatics, Statistics and Documentation, Medical University of Graz, Austria
| | - Heinz Buerger
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Austria; Departement of Plastic, Aesthetic and Reconstructive Surgery, General Hospital Klagenfurt am Woerthersee, Feschnigstraße 11, Klagenfurt 9020, Austria; Division of Hand and Microsurgery, Private Hospital Maria Hilf, Austria
| |
Collapse
|
20
|
Winter R, Bach-Gansmo N, Sæther O, Alsaker M, Redalen K. PO-1666 Streamlining the use of PET/MRI in an MR-only radiotherapy workflow. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)08117-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
21
|
Palackic A, Skias C, Winter R, Hubmer M, Andrianakis A, Feigl G. Terminology of the branches of the lateral circumflex femoral artery: Who is Who? J Anat 2021; 239:1465-1472. [PMID: 34310710 PMCID: PMC8602022 DOI: 10.1111/joa.13507] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/17/2021] [Accepted: 06/21/2021] [Indexed: 11/30/2022] Open
Abstract
The anterolateral thigh flap and the tensor fasciae latae flap are supplied by the lateral circumflex femoral artery (LCFA). Different branching patterns of the LCFA have been described, leading to confusion, discrepancies and difficulties in clinical and cadaveric study comparisons. The aim of this study was to evaluate the branching patterns of the LCFA in dissected lower limbs and propose a simplified nomenclature. One hundred and two lower limbs fixed with Thiel's method were investigated. Meticulous dissection was performed, and the branching pattern of the arteries was documented by illustration and photography. These were analysed and allocated to the currently existing terminologies regarding the numbers of the branches (Part 1), and these subgroups were evaluated according to the variability of the trunk formations (Part 2). In Part 1, four subgroups could be classified (A, B, C and D). Group A included a total number of three branches (n = 50), Group B included four (n = 41), Group C included five (n = 5) and Group D included only two branches (n = 6). Part 2 showed in total 11 different trunk variations. Group A had four trunk variations: A1 (n = 38), A2 (n = 5), A3 (n = 2) and A4 (n = 6); Group B also had four variations: B1 (n = 16), B2 (n = 18), B3 (n = 3) and B4 (n = 4); Group C displayed two variations: C1 (n = 1) and C2 (n = 4); and in Group D, there was only one variation observed D1 (n = 6). Branching patterns were highly variable and inconsistent in terms of the number of branches and trunk variations, which resulted in different possible and justified interpretations and classifications. A new terminology should be defined cooperatively among anatomists and clinicians that will be useful for everybody. We propose a terminology oriented to the associated muscles.
Collapse
Affiliation(s)
- Alen Palackic
- Division of Macroscopic and Clinical Anatomy, Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Medical University of Graz, Graz, Austria.,Department of Surgery, University of Texas Medical Branch, Galveston, Texas, USA.,Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Christoph Skias
- Division of Macroscopic and Clinical Anatomy, Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Medical University of Graz, Graz, Austria.,Department of Surgery, Elisabethinen Hospital Graz, Graz, Austria
| | - Raimund Winter
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Martin Hubmer
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Alexandros Andrianakis
- Division of Macroscopic and Clinical Anatomy, Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Medical University of Graz, Graz, Austria.,Department of Ear, Nose and Throat, Medical University of Graz, Graz, Austria
| | - Georg Feigl
- Division of Macroscopic and Clinical Anatomy, Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Medical University of Graz, Graz, Austria.,Institute of Anatomy and Clinical Morphology, Faculty of Health/School of Medicine, Witten/Herdecke University, Witten, Germany
| |
Collapse
|
22
|
Sawetz I, Lebo PB, Nischwitz SP, Winter R, Schaunig C, Brinskelle P, Kamolz LP, Gualdi A, Lumenta DB. Platelet-rich plasma for striae distensae: What do we know about processed autologous blood contents for treating skin stretchmarks?-A systematic review. Int Wound J 2021; 18:387-395. [PMID: 33738930 PMCID: PMC8244019 DOI: 10.1111/iwj.13541] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 12/13/2020] [Indexed: 11/27/2022] Open
Abstract
Striae distensae, also known as stretch marks, particularly associated with female sex, pregnancy, obesity, and/or hormonal change, are linear bands of benign dermal lesions. Although not posing any health risk, aesthetically unpleasing stretch marks can cause significant psychological distress among those affected. In abundance of therapeutic approaches, some literature sources proclaim platelet‐rich plasma to be a promising treatment modality for striae distensae. We aimed to shed some light on the current literature evidence of platelet‐rich plasma for treating stretch marks and performed an English literature analysis with two independent reviewers in accordance with PRISMA guidelines searching the PubMed and Web of Science databases in June 2019. Of the 12 found studies, 6 matched inclusion criteria. With no control groups in two, just two other reports used intraindividual comparisons, and all but one publication performed histopathological assessments. All studies observed clinical and subjective improvements without using validated scores or patient‐reported outcome measures (PROMs). The main findings were that multiple treatments with platelet‐rich plasma demonstrated increased epidermal thickness, rete ridges formation, and collagen/elastin formation, while decreasing the inflammatory cell infiltrate. The current literature evidence supporting the use of platelet‐rich plasma for striae distensae is poor. We propose in this review an outline for a study protocol with intraindividual control groups, standardised scores, validated PROMs, and participant incentives to enhance the scientific power in future clinical trials.
Collapse
Affiliation(s)
- Isabelle Sawetz
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Patricia B Lebo
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Sebastian P Nischwitz
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria.,COREMED-Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
| | - Raimund Winter
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Caroline Schaunig
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Petra Brinskelle
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Lars P Kamolz
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria.,COREMED-Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
| | | | - David B Lumenta
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| |
Collapse
|
23
|
Nischwitz SP, Luze H, Popp D, Winter R, Draschl A, Schellnegger M, Kargl L, Rappl T, Giretzlehner M, Kamolz LP. Global burn care and the ideal burn dressing reloaded - A survey of global experts. Burns 2021; 47:1665-1674. [PMID: 33838957 DOI: 10.1016/j.burns.2021.02.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 01/15/2021] [Accepted: 02/03/2021] [Indexed: 01/05/2023]
Abstract
PURPOSE Burn care is a highly relevant medical specialty in every part of the world. Different infrastructure, healthcare systems and access to medical supplies lead to different needs, treatment strategies and outcomes. A fundamental tool in a burn care provider's armamentarium is the use of different dressings. Several studies have investigated the question of the ideal burn dressing, but none could achieve a proper global perspective. With advanced dressings being on the rise, we conducted this study to get a global understanding of the actual use and idea of the ideal burn dressing. OBJECTIVE The objective of this study was to investigate the understanding of an 'ideal burn dressing' on a global scale. MATERIALS AND METHODS A questionnaire about burn care and the ideal burn dressing has been created and translated to five of the most spoken languages world-wide (English, Spanish, French, Chinese, Indonesian). It has been uploaded to an online survey platform and sent out to burn experts worldwide. The voluntary participation was possible for a period of four weeks. RESULTS In total, 196 respondents from 49 countries participated in the study, yielding a response rate of 24.5%. The most important burn dressing characteristics in a cumulative ranking were (1) lack of adhesion (80.54%), (2) pain-free dressing change (79.87%), (3) requirement of fewer dressing changes, while in a linear ranking they were (1) anti-infective (35.14% 1st), pain-reduction (24.14% 2nd), and high absorbency (23.49% 3rd). Silver-based dressings are the most used dressings for superficial (45.21%) and deep (52.78%). 94.81% believe that the choice of burn dressing affects the outcome. CONCLUSION This investigation has delivered valuable insights into the global perspective of the ideal burn dressing. Yet, the question of the ideal burn dressing is still inconclusive. Wound dressing research is of fundamental interest for patients, healthcare providers and healthcare systems.
Collapse
Affiliation(s)
- Sebastian P Nischwitz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria; COREMED - Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria.
| | - Hanna Luze
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria; COREMED - Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
| | - Daniel Popp
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Raimund Winter
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | | | - Marlies Schellnegger
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria; COREMED - Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
| | - Lukas Kargl
- Department of Plastic-, Hand- and Reconstructive Microsurgery, Berufsgenossenschaftliche Unfallklinik Murnau, Murnau, Germany
| | - Thomas Rappl
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria; COREMED - Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
| | - Michael Giretzlehner
- Research Unit for Medical-Informatics, RISC Software GmbH, Johannes Kepler University Linz, Linz, Austria
| | - Lars-Peter Kamolz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria; COREMED - Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
| |
Collapse
|
24
|
Popp D, Smolle C, Nischwitz SP, Sawetz I, Schaunig C, Winter R, Spendel S, Kamolz LP. [COVID-19 and plastic surgery: aesthetic surgery or essential medical care? - Impact of the COVID-19 pandemic on patient care in the plastic surgery department at an university hospital]. HANDCHIR MIKROCHIR P 2021; 53:185-193. [PMID: 33530126 PMCID: PMC8545498 DOI: 10.1055/a-1308-2638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Einleitung
Im Frühjahr 2020 machte die COVID-19-Pandemie weitreichende Veränderungen und Maßnahmen in bisher nie dagewesenem Ausmaß notwendig. Diese Maßnahmen zielten einerseits darauf ab die Ausbreitung der Virusinfektion einzudämmen, und andererseits die landesweite Krankenversorgung weiterhin zu gewährleisten, insbesondere um im Falle einer größeren Anzahl an mit COVID-19 infizierten Patienten ausreichend Intensivkapazitäten zur Verfügung zu haben. In Bezug auf operative Fächer bedeutete dies das temporäre Aussetzen des Elektivprogramms auf unbestimmte Zeit. Ziel dieser Studie war es die Auswirkung dieser Maßnahmen auf das Behandlungsspektrum eines plastisch-chirurgischen Zentrums zu evaluieren.
Methode
Die Operationszahlen der klinischen Abteilung für Plastische, Ästhetische und Rekonstruktive Chirurgie der medizinischen Universität Graz während des sog. Lockdowns von 16.3.2020 bis 26.4.2020 (6 Wochen) sowie 2 Wochen davor wurden retrospektiv erhoben. Die Daten wurden zum korrespondierende Vorjahreszeitraum verglichen. Untersucht wurden u. a. Operationsspektrum, Dringlichkeit, Indikation und Komplikationsraten.
Ergebnisse
Durch den Wegfall des Elektivprogramms kam es während des Lockdowns im Jahresvergleich zu einem signifikanten Rückgang der OP-Zahlen um 57,5 % (2019: 353, 2020 150 Fälle). Während des Lockdowns wurden im Jahresvergleich signifikant mehr Notfall- und Akuteingriffe durchgeführt (2019: 41, 2020: 58 Fälle, p < 0,001). Außerdem wurde eine signifikante Häufung von Selbstverletzungen bzw. Suizidversuchen beobachtet (2019: 0, 2020: 16 Fälle, p > 0,001). Hinsichtlich Privat- und Arbeitsunfällen gab es keine signifikanten Unterschiede. Es zeigte sich auch kein signifikanter Unterschied bezüglich der Komplikationsrate (2019: 6,8, 2020: 10 %, p = 0,219).
Zusammenfassung
Ein signifikanter Anteil plastisch-chirurgischer Operationen an einem Universitätsklinikum mit überregionalem Versorgungsauftrag besteht aus Notfalloperationen, akuten und dringenden medizinisch notwendigen Operationen. Während des Lockdowns wurden Operationen ohne signifikanten Anstieg der Komplikationsrate durchgeführt. Trotz sämtlicher Herausforderungen während der Pandemie konnte eine qualitativ konstante Patientenversorgung auf höchstem Niveau gewährleistet werden. Um die während des Lockdowns angehäuften weniger dringenden, jedoch ebenso wichtigen Fälle zeitgerecht und in entsprechend hoher Qualität abzuarbeiten, wird eine Erweiterung der Operationskapazitäten mit Steigerung der Bettenanzahl und der Ambulanzkapazität notwendig sein. Die vorliegenden Ergebnisse zeigen, wie wichtig die Plastische Chirurgie für die medizinische Versorgung insbesondere in Krisenzeiten ist.
Collapse
Affiliation(s)
- Daniel Popp
- Klinische Abteilung für Plastische, Ästhetische und Rekonstruktive Chirurgie, Universitätsklinik für Chirurgie, Medizinische Universität Graz
| | - Christian Smolle
- Klinische Abteilung für Plastische, Ästhetische und Rekonstruktive Chirurgie, Universitätsklinik für Chirurgie, Medizinische Universität Graz
| | - Sebastian P Nischwitz
- Klinische Abteilung für Plastische, Ästhetische und Rekonstruktive Chirurgie, Universitätsklinik für Chirurgie, Medizinische Universität Graz
| | - Isabelle Sawetz
- Klinische Abteilung für Plastische, Ästhetische und Rekonstruktive Chirurgie, Universitätsklinik für Chirurgie, Medizinische Universität Graz
| | - Caroline Schaunig
- Klinische Abteilung für Plastische, Ästhetische und Rekonstruktive Chirurgie, Universitätsklinik für Chirurgie, Medizinische Universität Graz
| | - Raimund Winter
- Klinische Abteilung für Plastische, Ästhetische und Rekonstruktive Chirurgie, Universitätsklinik für Chirurgie, Medizinische Universität Graz
| | - Stephan Spendel
- Klinische Abteilung für Plastische, Ästhetische und Rekonstruktive Chirurgie, Universitätsklinik für Chirurgie, Medizinische Universität Graz
| | - Lars-Peter Kamolz
- Klinische Abteilung für Plastische, Ästhetische und Rekonstruktive Chirurgie, Universitätsklinik für Chirurgie, Medizinische Universität Graz
| |
Collapse
|
25
|
Lang-Illievich K, Winter R, Rumpold-Seitlinger G, Schicho K, Dorn C, Klivinyi C, Bornemann-Cimenti H. The Effect of Low-Level Light Therapy on Capsaicin-Induced Peripheral and Central Sensitization in Healthy Volunteers: A Double-Blinded, Randomized, Sham-Controlled Trial. Pain Ther 2020; 9:717-726. [PMID: 33040311 PMCID: PMC7547817 DOI: 10.1007/s40122-020-00205-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 09/30/2020] [Indexed: 11/26/2022] Open
Abstract
Introduction Several clinical trials have demonstrated that low-level light therapy (LLLT), a method of photobiomodulation, is an effective analgetic treatment. However, the mechanism of action has not yet been finally clarified. In particular, unanswered questions include whether it only affects peripheral or whether it also affects the spinal or supraspinal level. This study aimed to evaluate the effect of low-level light therapy on primary and secondary hyperalgesia in a human pain model. Methods This study was planned as a randomized, sham-controlled, and double-blinded trial with repeated measures within subject design. Capsaicin was applied on both forearms of ten healthy volunteers to induce peripheral and central sensitization. One forearm was treated with low-level light therapy; the other served as sham control. Results Low-level light therapy significantly increased the mechanical pain threshold, heat pain threshold, and decreased pain intensity. Conclusions Our data indicate that low-level light therapy is effective at reducing the heat and mechanical pain threshold in a human pain model, pointing to a significant modulating effect on peripheral and central sensitization. These effects—especially in the absence of reported side effects—make low-level light therapy a promising tool in pain management. The application of low-level light therapy to treat chronic pain should be considered for further clinical trials.
Collapse
Affiliation(s)
- Kordula Lang-Illievich
- Department of Anesthesiology and Intensive Care Medicine, Medical University of Graz, Graz, Austria
| | - Raimund Winter
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | | | - Kurt Schicho
- Department of Oral and Maxillofacial Surgery, Medical University of Vienna, Vienna, Austria
| | - Christian Dorn
- Department of Anesthesiology and Intensive Care Medicine, Medical University of Graz, Graz, Austria
| | - Christoph Klivinyi
- Department of Anesthesiology and Intensive Care Medicine, Medical University of Graz, Graz, Austria
| | - Helmar Bornemann-Cimenti
- Department of Anesthesiology and Intensive Care Medicine, Medical University of Graz, Graz, Austria.
| |
Collapse
|
26
|
Doyle JS, van Santen DK, Iser D, Sasadeusz J, O'Reilly M, Harney B, Traeger MW, Roney J, Cutts JC, Bowring AL, Winter R, Medland N, Fairley CK, Moore R, Tee B, Asselin J, El-Hayek C, Hoy JF, Matthews GV, Prins M, Stoové MA, Hellard ME. Micro-elimination of hepatitis C among people with HIV coinfection: declining incidence and prevalence accompanying a multi-center treatment scale-up trial. Clin Infect Dis 2020; 73:e2164-e2172. [PMID: 33010149 DOI: 10.1093/cid/ciaa1500] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Gay and bisexual men (GBM) are a key population affected by HIV and hepatitis C (HCV) co-infection. Providing HCV treatment scale-up across specialist and non-hepatitis specialist settings may eliminate HCV in this population. We aimed to (1) deliver and measure HCV treatment effectiveness, and (2) determine the population impact of treatment on HCV prevalence and incidence longitudinally. METHODS The co-EC Study (Enhancing care and treatment among HCV/HIV co-infected individuals to Eliminate Hepatitis C transmission) was an implementation trial providing HCV direct-acting antiviral treatment in Melbourne, Australia, from 2016-2018. Individuals with HCV/HIV co-infection were prospectively enrolled from primary and tertiary-care services providing care for 85% of GBM with HIV in our jurisdiction. HCV-viraemic prevalence and HCV-antibody/viraemic incidence were measured using a state-wide, individually-linked, electronic surveillance system. RESULTS Among 200 participants recruited, 186 initiated treatment during the study period. Sustained virological response among primary care participants (98%, 95%CI:93-100%) was not different to tertiary care (98%, 95%CI:86-100%). From 2012-2019, between 2434 and 3476 GBM with HIV-infection attended our primary-care sites annually providing 13,801 person-years of follow-up; 50-60% received an HCV test annually, 10-14% were anti-HCV positive. Among those anti-HCV positive, viraemic prevalence declined 83% during the study (54% to 9%; 2016 to 2019). HCV incidence decreased 25% annually from 1.7/100 person-years in 2012 to 0.5/100 person-years in 2019 (incidence rate ratio 0.75; CI:0.68-0.83;p<0.001). CONCLUSION High treatment effectiveness by non-specialists demonstrates the feasibility of treatment scale-up in this population. Substantial declines in HCV incidence and prevalence among GBM with HIV-infection provides proof-of-concept for HCV micro-elimination. REGISTRATION ClinicalTrials.gov (Identifier: NCT02786758).
Collapse
Affiliation(s)
- J S Doyle
- Burnet Institute, Melbourne, VIC, Australia.,Department of Infectious Diseases, The Alfred and Monash University, Melbourne, VIC, Australia
| | - D K van Santen
- Burnet Institute, Melbourne, VIC, Australia.,School of Population Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
| | - D Iser
- Department of Infectious Diseases, The Alfred and Monash University, Melbourne, VIC, Australia.,Department of Gastroenterology, St Vincent's Hospital, Melbourne, VIC, Australia
| | - J Sasadeusz
- Department of Infectious Diseases, The Alfred and Monash University, Melbourne, VIC, Australia.,Victorian Infectious Diseases Service at the Doherty Institute, Melbourne, VIC, Australia
| | - M O'Reilly
- Prahran Market Clinic, Melbourne, VIC, Australia
| | - B Harney
- Burnet Institute, Melbourne, VIC, Australia
| | | | - J Roney
- Department of Infectious Diseases, The Alfred and Monash University, Melbourne, VIC, Australia
| | - J C Cutts
- Burnet Institute, Melbourne, VIC, Australia
| | | | - R Winter
- Burnet Institute, Melbourne, VIC, Australia
| | - N Medland
- Melbourne Sexual Health Centre, Alfred Health, Carlton, VIC, Australia
| | - C K Fairley
- Melbourne Sexual Health Centre, Alfred Health, Carlton, VIC, Australia
| | - R Moore
- Northside Clinic, Fitzroy North, VIC, Australia
| | - B Tee
- Centre Clinic, Melbourne, VIC, Australia
| | - J Asselin
- Burnet Institute, Melbourne, VIC, Australia
| | - C El-Hayek
- Burnet Institute, Melbourne, VIC, Australia
| | - J F Hoy
- Department of Infectious Diseases, The Alfred and Monash University, Melbourne, VIC, Australia
| | - G V Matthews
- Kirby Institute, University of New South Wales, Sydney, NSW, Australia
| | - M Prins
- Amsterdam University Medical Centers, University of Amsterdam, Amsterdam Infection and Immunity Institute Amsterdam, the Netherlands.,Public Health Service of Amsterdam, Amsterdam, the Netherlands
| | - M A Stoové
- Burnet Institute, Melbourne, VIC, Australia.,School of Population Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
| | - M E Hellard
- Burnet Institute, Melbourne, VIC, Australia.,Department of Infectious Diseases, The Alfred and Monash University, Melbourne, VIC, Australia.,School of Population Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia.,Doherty Institute and Melbourne School of Population and Global Health, University of Melbourne
| |
Collapse
|
27
|
Koop J, Merz J, Wilmshöfer R, Winter R, Schembecker G. Influence of thermally induced structure changes in diluted β-lactoglobulin solutions on their surface activity and behavior in foam fractionation. J Biotechnol 2020; 319:61-68. [PMID: 32502511 DOI: 10.1016/j.jbiotec.2020.05.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 05/12/2020] [Accepted: 05/19/2020] [Indexed: 11/25/2022]
Abstract
Surface activity is an intrinsic protein feature, leading to the capability of aqueous protein solutions to form foam. This feature provides opportunities for downstream processing, such as usage of foam fractionation for purification. In order to investigate the impact of the surface activity on the performance of the foam fractionation process, protein solutions with different surface activity were produced by different thermal denaturation of aqueous β-lactoglobulin solutions. The effectiveness of the denaturation procedure was verified with circular dichroic spectroscopy, and the impact on surface activity was determined via dynamic surface tension measurement. The increased surface activity resulted in higher foamate flow rates. Furthermore, the effects could be correlated with secondary structure changes and with the dynamic surface pressure. The new result of this study is that the effect of the denaturation of a protein on foam fractionation depends on the protein concentration. At the lower feed concentration, effects became visible, which could not be observed at the higher concentration.
Collapse
Affiliation(s)
- J Koop
- TU Dortmund University, Department of Biochemical and Chemical Engineering, Laboratory of Plant and Process Design, Emil-Figge-Str. 70, 44227 Dortmund, Germany.
| | - J Merz
- Evonik Technology & Infrastructure GmbH, Rodenbacher Chaussee 4, 63457 Hanau-Wolfgang, Germany
| | - R Wilmshöfer
- TU Dortmund University, Department of Biochemical and Chemical Engineering, Laboratory of Plant and Process Design, Emil-Figge-Str. 70, 44227 Dortmund, Germany
| | - R Winter
- TU Dortmund University, Department of Chemistry and Chemical Biology, Physical Chemistry, Otto-Hahn-Str. 4a, 44227 Dortmund, Germany
| | - G Schembecker
- TU Dortmund University, Department of Biochemical and Chemical Engineering, Laboratory of Plant and Process Design, Emil-Figge-Str. 70, 44227 Dortmund, Germany
| |
Collapse
|
28
|
Winter R, Sherman E, Wright J. 58THE IMPACT OF TEACHING FELLOWS IN THE ELDERLY MEDICINE DEPARTMENT ON UNDERGRADUATE CAREER PERCEPTIONS. Age Ageing 2019. [DOI: 10.1093/ageing/afz057.06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- R Winter
- Brighton and Sussex Medical School
| | | | - J Wright
- Brighton and Sussex Medical School
| |
Collapse
|
29
|
Winter R, Steinböck M, Leinich W, Reischies FM, Feigl G, Sljivich M, Friedl H, Hubmer M, Koch H. The reverse latissimus dorsi flap: An anatomical study and retrospective analysis of its clinical application. J Plast Reconstr Aesthet Surg 2019; 72:1084-1090. [DOI: 10.1016/j.bjps.2019.03.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 02/09/2019] [Accepted: 03/10/2019] [Indexed: 11/27/2022]
|
30
|
Winter R, Leibfarth S, Boeke S, Mena-Romano P, Krueger M, Sezgin EC, Bowden G, Cotton J, Pichler B, Zips D, Thorwarth D. EP-2029 Principal component analysis for quantitative and robust analysis of dynamic PET/MR imaging data. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)32449-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
31
|
Lofmark H, Ljung L, Eggers K, Frick M, Linder R, Lindahl B, Martinsson A, Melki D, Sarkar N, Svensson P, Winter R, Jernberg T. P3666A simplified HEART-score improves discrimination for myocardial infarction in chest pain patients presenting to the emergency department. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- H Lofmark
- Institution for cardiaovascular diease, Department of cardiology, Danderyd, Sweden
| | - L Ljung
- Institution for cardiaovascular diease, Department of cardiology, Danderyd, Sweden
| | - K Eggers
- Institution for cardiaovascular diease, Department of cardiology, Danderyd, Sweden
| | - M Frick
- Institution for cardiaovascular diease, Department of cardiology, Danderyd, Sweden
| | - R Linder
- Institution for cardiaovascular diease, Department of cardiology, Danderyd, Sweden
| | - B Lindahl
- Institution for cardiaovascular diease, Department of cardiology, Danderyd, Sweden
| | - A Martinsson
- Institution for cardiaovascular diease, Department of cardiology, Danderyd, Sweden
| | - D Melki
- Institution for cardiaovascular diease, Department of cardiology, Danderyd, Sweden
| | - N Sarkar
- Institution for cardiaovascular diease, Department of cardiology, Danderyd, Sweden
| | - P Svensson
- Institution for cardiaovascular diease, Department of cardiology, Danderyd, Sweden
| | - R Winter
- Institution for cardiaovascular diease, Department of cardiology, Danderyd, Sweden
| | - T Jernberg
- Institution for cardiaovascular diease, Department of cardiology, Danderyd, Sweden
| |
Collapse
|
32
|
Wurzer P, Winter R, Stemmer SO, Ivancic J, Lebo PB, Hundeshagen G, Cambiaso-Daniel J, Quehenberger F, Kamolz LP, Lumenta DB. Risk factors for recurrence of pressure ulcers after defect reconstruction. Wound Repair Regen 2018; 26:64-68. [PMID: 29381242 DOI: 10.1111/wrr.12613] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 01/17/2018] [Indexed: 12/15/2022]
Abstract
Patients suffering from pressure ulcers remain to be a challenging task for nursing staff and doctors in the daily clinical management, putting-notably in the case of recurrences-additional strain on the constantly reduced resources in public healthcare. We aimed to assess the risk factors for the recurrence of pressure ulcers at our institution, a tertiary referral center. In this retrospective analysis of patients admitted to our division we identified risk factors for pressure ulcer recurrence. The hospital patient database search included all patients with a diagnosis of pressure ulcers of the torso and lower extremity. One hundred sixty-three patients were diagnosed with pressure ulcers and 55 patients with 63 pressure ulcers met our inclusion criteria. The 17 recurrences (27%) had an average follow-up of 728 days. Most presented with lesions of the ischial tuberosity (n=24). Recurrence was statistically associated with defect size (p = 0.013, Cox regression analysis), and serum albumin levels (p = 0.045, Spearman correlation), but no association was found for body mass index, bacterial profile, comorbidities, localization, previous surgery, or time-to-admission for reconstruction (all p > 0.05). Supported by the recent literature we identified factors like defect size to be associated with pressure ulcer recurrence, but not with time-to admission for reconstruction or number of previous debridements. Whether laboratory values like serum albumin levels were the cause, the result or associated with pressure ulcer recurrence warrants further investigation.
Collapse
Affiliation(s)
- Paul Wurzer
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Raimund Winter
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Sebastian O Stemmer
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Josipa Ivancic
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Patricia B Lebo
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Gabriel Hundeshagen
- Department of Hand, Plastic and Reconstructive Surgery, Burn Trauma Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwigshafen, Germany
| | - Janos Cambiaso-Daniel
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Franz Quehenberger
- Institute for Medical Informatics, Statistics and Documentation, Medical University of Graz, Graz, Austria
| | - Lars-Peter Kamolz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria.,COREMED - Cooperative Center for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
| | - David B Lumenta
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| |
Collapse
|
33
|
Al-Ayoubi SR, Schummel PH, Golub M, Peters J, Winter R. Influence of cosolvents, self-crowding, temperature and pressure on the sub-nanosecond dynamics and folding stability of lysozyme. Phys Chem Chem Phys 2018; 19:14230-14237. [PMID: 28447688 DOI: 10.1039/c7cp00705a] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We studied the effects of temperature and hydrostatic pressure on the dynamical properties and folding stability of highly concentrated lysozyme solutions in the absence and presence of the osmolytes trimethylamine-N-oxide (TMAO) and urea. Elastic incoherent neutron scattering (EINS) was applied to determine the mean-squared displacement (MSD) of the protein's hydrogen atoms to yield insights into the effects of these cosolvents on the averaged sub-nanosecond dynamics in the pressure range from ambient up to 4000 bar. To evaluate the additional effect of self-crowding, two protein concentrations (80 and 160 mg mL-1) were used. We observed a distinct effect of TMAO on the internal hydrogen dynamics, namely a reduced mobility. Urea, on the other hand, revealed no marked effect and consequently, no counteracting effect in an urea-TMAO mixture was observed. Different from the less concentrated protein solution, no significant effect of pressure on the MSD was observed for 160 mg mL-1 lysozyme. The EINS experiments were complemented by Fourier-transform infrared (FTIR) spectroscopy measurements, which led to additional insights into the folding stability of lysozyme under the various environmental conditions. We observed a stabilization of the protein in the presence of the compatible osmolyte TMAO and a destabilization in the presence of urea against temperature and pressure for both protein concentrations. Additionally, we noticed a slight destabilizing effect upon self-crowding at very high protein concentration (160 mg mL-1), which is attributable to transient destabilizing intermolecular interactions. Furthermore, a pressure-temperature diagram could be obtained for lysozyme at these high protein concentrations that mimics densely packed intracellular conditions.
Collapse
Affiliation(s)
- S R Al-Ayoubi
- Physical Chemistry I - Biophysical Chemistry, Department of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Str. 4a, 44227, Dortmund, Germany.
| | | | | | | | | |
Collapse
|
34
|
Wangler A, Canales R, Held C, Luong TQ, Winter R, Zaitsau DH, Verevkin SP, Sadowski G. Co-solvent effects on reaction rate and reaction equilibrium of an enzymatic peptide hydrolysis. Phys Chem Chem Phys 2018; 20:11317-11326. [DOI: 10.1039/c7cp07346a] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This work presents an approach that expresses the Michaelis constant KaM and the equilibrium constant Kth of an enzymatic peptide hydrolysis based on thermodynamic activities instead of concentrations.
Collapse
Affiliation(s)
- A. Wangler
- Department BCI, Laboratory of Thermodynamics
- TU Dortmund University
- 44227 Dortmund
- Germany
| | - R. Canales
- Department BCI, Laboratory of Thermodynamics
- TU Dortmund University
- 44227 Dortmund
- Germany
- Departamento de Ingeniería Química y Bioprocesos
| | - C. Held
- Department BCI, Laboratory of Thermodynamics
- TU Dortmund University
- 44227 Dortmund
- Germany
| | - T. Q. Luong
- Department of Chemistry and Chemical Biology
- TU Dortmund University
- 44227 Dortmund
- Germany
| | - R. Winter
- Department of Chemistry and Chemical Biology
- TU Dortmund University
- 44227 Dortmund
- Germany
| | - D. H. Zaitsau
- Department of Physical Chemistry
- Institute of Chemistry
- University of Rostock
- 18059 Rostock
- Germany
| | - S. P. Verevkin
- Department of Physical Chemistry
- Institute of Chemistry
- University of Rostock
- 18059 Rostock
- Germany
| | - G. Sadowski
- Department BCI, Laboratory of Thermodynamics
- TU Dortmund University
- 44227 Dortmund
- Germany
| |
Collapse
|
35
|
Reischies FMJ, Krause R, Holzer J, Tiefenbacher F, Winter R, Eylert G, Meikl T, Tuca A, Köfer MJ, Kamolz LP, Lumenta DB. What can we learn from sonication results of breast implants? PLoS One 2017; 12:e0182267. [PMID: 28797044 PMCID: PMC5552211 DOI: 10.1371/journal.pone.0182267] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Accepted: 07/14/2017] [Indexed: 11/17/2022] Open
Abstract
Background Different research groups have identified microorganisms on breast implants by sonication with significant correlation to the rate of capsular contracture. This substantiated the hypothesis of an infectious etiology of capsular contracture. However, no clinical consequence has been drawn from these results yet. Aim of this study was to review sonication results from breast implants and to evaluate the current preoperative antibiotic regime for breast-implant surgery. Methods We compared breast implant sonication culture results from published reports and our own database. Current perioperative antibiotic recommendations were compared with the susceptibility profile of the found organisms. Results We found Coagulase-negative staphylococci and Propionibacteria to be the main group of microorganism found by sonication on explanted breast implants. Most guidelines recommend cephalosporins for preoperative antibiotical prophylaxis for breast-implant surgery. Conclusion There is a discrepancy between antibiotic activity of commonly used antibiotics for preoperative prophylaxis of surgical site infections, and microorganisms found by sonication on breast implants, suspected to trigger the formation of capsular contracture. A targeted antibiotic prophylaxis for breast implant surgery with glycopeptides (e.g. Vancomycin) should be considered for the prevention of capsular contracture.
Collapse
Affiliation(s)
- Frederike M J Reischies
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University of Graz, Graz, Austria
| | - Robert Krause
- Department of Internal Medicine, Section of Infectious Diseases and Tropical Medicine, Medical University of Graz, Graz, Austria
| | - Judith Holzer
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University of Graz, Graz, Austria
| | - Fabian Tiefenbacher
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University of Graz, Graz, Austria
| | - Raimund Winter
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University of Graz, Graz, Austria
| | - Gertraud Eylert
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University of Graz, Graz, Austria
| | - Tobias Meikl
- Department of Surgery, Landeskrankenhaus Feldbach/Fürstenfeld, Feldbach, Austria
| | - Alexandru Tuca
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University of Graz, Graz, Austria
| | - Martin J Köfer
- Institute for Hospital Hygiene and Microbiology, Medical University of Graz, Graz, Austria
| | - Lars P Kamolz
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University of Graz, Graz, Austria
| | - David B Lumenta
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University of Graz, Graz, Austria
| |
Collapse
|
36
|
Boeke S, Winter R, Menegakis A, Mena-Romano P, Krueger M, Sezgin E, Reischl G, Pichler B, Zips D, Thorwarth D. PO-0967: Analysis of tumour microenvironment using multi-parametric PET/MR imaging in HNSCC xenograft models. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31403-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
37
|
Wurzer P, Cole MR, Clayton RP, Hundeshagen G, Nunez Lopez O, Cambiaso-Daniel J, Winter R, Branski LK, Hawkins HK, Finnerty CC, Herndon DN, Lee JO. Herpesviradae infections in severely burned children. Burns 2017; 43:987-992. [PMID: 28420570 DOI: 10.1016/j.burns.2017.01.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Revised: 12/31/2016] [Accepted: 01/24/2017] [Indexed: 10/19/2022]
Abstract
OBJECTIVE Burn-related immunosuppression can promote human herpesviridae infections. However, the effect of these infections on morbidity and mortality after pediatric burn injuries is unclear. METHODS We retrospectively analyzed pediatric patients with burns ≥10% of the total body surface area (TBSA) who were admitted between 2010 and 2015. On clinical suspicion of a viral infection, antiviral therapy was initiated. Viral infection was confirmed via Tzanck smear, viral culture, and/or PCR. Study endpoints were mortality, days of antiviral agent administration, type of viral test used, type of viral infection, and length of hospitalization. RESULTS Of the 613 patients were analyzed, 28 presented with clinically diagnosed viral infections. The use of Tzanck smears decreased over the past 5 years, whereas PCR and viral cultures have become standard. Patients with viral infections had significantly larger burns (53±15% vs. 38±18%, p<0.001); however, length of stay per TBSA burn was comparable (0.5±0.4 vs. 0.6±0.2, p=0.211). The most commonly detected herpesviridae was herpes simplex virus 1. Two patients died due to sepsis, which was accompanied by HSV infection. The mortality rate among all patients (2.7%) was comparable to that in the infected group (7.1%, p=0.898). Acyclovir was given systemically for 9±8days (N=76) and/or topically for 9±9days for HSV (N=39, combination of both N=33). Ganciclovir was prescribed in three cases for CMV. CONCLUSIONS Viral infections occur more commonly in patients suffering from larger burns, and HSV infections can contribute to mortality.
Collapse
Affiliation(s)
- Paul Wurzer
- Department of Surgery, University of Texas Medical Branch and Shriners Hospitals for Children, Galveston, TX, United States; Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria.
| | - Megan R Cole
- Department of Surgery, University of Texas Medical Branch and Shriners Hospitals for Children, Galveston, TX, United States
| | - Robert P Clayton
- Department of Surgery, University of Texas Medical Branch and Shriners Hospitals for Children, Galveston, TX, United States; Sealy Center for Molecular Medicine and the Institute for Translational Sciences, University of Texas Medical Branch, Galveston, TX, United States
| | - Gabriel Hundeshagen
- Department of Surgery, University of Texas Medical Branch and Shriners Hospitals for Children, Galveston, TX, United States
| | - Omar Nunez Lopez
- Department of Surgery, University of Texas Medical Branch and Shriners Hospitals for Children, Galveston, TX, United States
| | - Janos Cambiaso-Daniel
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Raimund Winter
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Ludwik K Branski
- Department of Surgery, University of Texas Medical Branch and Shriners Hospitals for Children, Galveston, TX, United States; Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Hal K Hawkins
- Department of Pathology, University of Texas Medical Branch and Shriners Hospitals for Children, Galveston, TX, United States
| | - Celeste C Finnerty
- Department of Surgery, University of Texas Medical Branch and Shriners Hospitals for Children, Galveston, TX, United States; Sealy Center for Molecular Medicine and the Institute for Translational Sciences, University of Texas Medical Branch, Galveston, TX, United States
| | - David N Herndon
- Department of Surgery, University of Texas Medical Branch and Shriners Hospitals for Children, Galveston, TX, United States
| | - Jong O Lee
- Department of Surgery, University of Texas Medical Branch and Shriners Hospitals for Children, Galveston, TX, United States
| |
Collapse
|
38
|
Winter R, Haug I, Lebo P, Grohmann M, Reischies FMJ, Cambiaso-Daniel J, Tuca A, Rienmüller T, Friedl H, Spendel S, Forbes AA, Wurzer P, Kamolz LP. Standardizing the complication rate after breast reduction using the Clavien-Dindo classification. Surgery 2016; 161:1430-1435. [PMID: 28043695 DOI: 10.1016/j.surg.2016.11.028] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 11/20/2016] [Accepted: 11/22/2016] [Indexed: 11/15/2022]
Abstract
BACKGROUND Published complication rates for breast reduction surgery, also known as reduction mammaplasty, vary between 4% and 54%. This wide range of complication rates could be attributable to the lack of a standardized classification of complications in plastic surgery. The aim of this study was to analyze our single-center complication rates after reduction mammaplasty using the Clavien-Dindo classification. METHODS We performed a retrospective chart review studying 804 patients between the ages of 18 and 81 years old who underwent breast reduction between 2005 and 2015 at our institution. Patients with a history of breast cancer, a previous breast operation, who did not undergo bilateral reduction mammaplasty, or who required systemic immunodeficiency/immunosuppressive drugs were excluded from our analysis. Complications were classified according to the Clavien-Dindo classification from Grades I to V. RESULTS A total of 486 patients met the inclusion criteria for the analysis. Patients had an age (mean ± standard deviation) of 39 ± 13 years and a body mass index of 26 ± 4 kg/m2. Median follow-up was 274 days (interquartile range: 90.5-378). The overall rate of complications of reduction mammaplasty was 63%, with the majority of those being Grades I (48%) and II (9%), comprising 92% of all the complications. Operative revisions were required in 6% (1% Grade IIIA and 5% Grade IIIB). There were no complications graded in categories IV and V. CONCLUSION Although complications occurred in more than half of the cases, the majority did not require operative reintervention. The Clavien-Dindo classification can classify the severity of complications and serve as a benchmark to compare complication rates between different practices. We believe that grading of complications should distinguish between those that do and do not require operative reinterventions.
Collapse
Affiliation(s)
- Raimund Winter
- Division of Plastic, Aesthetic, and Reconstructive Surgery, Medical University of Graz, Graz, Austria.
| | - Isabella Haug
- Division of Plastic, Aesthetic, and Reconstructive Surgery, Medical University of Graz, Graz, Austria
| | - Patricia Lebo
- Division of Plastic, Aesthetic, and Reconstructive Surgery, Medical University of Graz, Graz, Austria
| | - Martin Grohmann
- Division of Plastic, Aesthetic, and Reconstructive Surgery, Medical University of Graz, Graz, Austria
| | - Frederike M J Reischies
- Division of Plastic, Aesthetic, and Reconstructive Surgery, Medical University of Graz, Graz, Austria
| | - Janos Cambiaso-Daniel
- Division of Plastic, Aesthetic, and Reconstructive Surgery, Medical University of Graz, Graz, Austria
| | - Alexandru Tuca
- Division of Plastic, Aesthetic, and Reconstructive Surgery, Medical University of Graz, Graz, Austria
| | - Theresa Rienmüller
- Institute of Health Care Engineering with European Notified Body of Medical Devices, Graz University of Technology, Graz, Austria
| | - Herwig Friedl
- Institute of Statistics, Graz University of Technology, Graz, Austria
| | - Stephan Spendel
- Division of Plastic, Aesthetic, and Reconstructive Surgery, Medical University of Graz, Graz, Austria
| | - Abigail A Forbes
- University of Texas Medical Branch, School of Medicine, Galveston, TX
| | - Paul Wurzer
- Division of Plastic, Aesthetic, and Reconstructive Surgery, Medical University of Graz, Graz, Austria
| | - Lars-P Kamolz
- Division of Plastic, Aesthetic, and Reconstructive Surgery, Medical University of Graz, Graz, Austria; Research Unit for Safety in Health, Medical University of Graz, Graz, Austria
| |
Collapse
|
39
|
Ota T, Senaratne DNS, Preston NK, Ferrara F, Djikic D, Villemain O, Takahashi L, Niki K, Patrascu N, Benyounes N, Popa E, Diego Bellavia DB, Sundqvist M, Wei-Ting C, Papachristidis A, Djordjevic-Dikic A, Volpi C, Reis L, Nieto Tolosa J, Nishikawa H, D'angelo M, Testuz A, Mo YJ, Hashemi N, Toyota K, Nagamine K, Koide Y, Nomura T, Kurata J, Murakami Y, Kozuka Y, Ohshiro C, Thomas K, Townsend C, Wheeler S, Jacobson I, Elkington A, Balkhausen K, Bull S, Ring L, Gargani L, Carannante L, Russo V, D'alto M, Marra AM, Cittadini A, D'andrea A, Vriz O, Bossone E, Mujovic N, Dejanovic B, Peric V, Marinkovic M, Jankovic N, Orbovic B, Simic D, Sitefane F, Pernot M, Malekzadeh-Milani G, Baranger J, Bonnet D, Boudjemline Y, Uejima T, Nishikawa H, Semba H, Sawada H, Yamashita T, Sugawara M, Kayanuma H, Inoue K, Yagawa M, Takamisawa I, Umemura J, Yoshikawa T, Tomoike H, Mihalcea DJ, Mihaila S, Lungeanu L, Trasca LF, Bruja R, Neagu MS, Albu S, Cirstoiu M, Vinereanu D, Van Der Vynckt C, Gout O, Cohen A, Enache R, Jurcut R, Coman IM, Badea R, Platon P, Calin A, Beladan CC, Rosca M, Ginghina C, Popescu BA, Sonia Dell'oglio SD, Attilio Iacovoni AI, Calogero Falletta CF, Giuseppe Romano GR, Sergio Sciacca SS, Lissa Sugeng LS, Joseph Maalouf JM, Michele Pilato MP, Michele Senni MS, Cesare Scardulla CS, Francesco Clemenza FC, Salman K, Tornvall P, Ugander M, Chen ZC, Wang JJ, Fisch S, Liao RL, Roper D, Casar Demarco D, Papitsas M, Tsironis I, Byrne J, Alfakih K, Monaghan MJ, Boskovic N, Rakocevic I, Giga V, Tesic M, Stepanovic J, Nedeljkovic I, Aleksandric S, Kostic J, Beleslin B, Altman M, Annabi MS, Abouchakra L, Cucchini U, Muraru D, Badano LP, Ernande L, Derumeaux G, Teixeira R, Fernandes A, Almeida I, Dinis P, Madeira M, Ribeiro J, Puga L, Nascimento J, Goncalves L, Cambronero Sanchez FJ, Pinar Bermudez E, Gimeno Blanes JR, De La Morena Valenzuela G, Uejima T, Takahashi L, Semba H, Sawada H, Yamashita T, Lopez Fernandez T, Irazusta Cordoba FJ, Rosillo Rodriguez SO, Dominguez Melcon FJ, Meras Colunga P, Gemma D, Moreno Gomez R, Moreno Yanguela M, Lopez Sendon JL, Nguyen V, Mathieu T, Kerneis C, Cimadevilla C, Kubota N, Codogno I, Tubiana S, Estrellat C, Vahanian A, Messika-Zeitoun D, Ondrus T, Van Camp G, Di Gioia G, Barbato E, Bartunek J, Penicka M, Johnsson J, Gomez A, Alam M, Winter R. Poster Session 3The imaging examination and quality assessmentP626Value of mitral and tricuspid annular displacement to assess the interventricular systolic relationship in severe aortic valve stenosis : a Pilot studyP627Follow-up echocardiography in asymptomatic valve disease: assessing the potential economic impact of the European and American guidelines in a dedicated valve clinic, compared to standard care.P628The tricuspid valve: identification of optimal view for assessing for prolapseP629Right atrial volume by two-dimensional echocardiography in healthy subjectsP630Disturbance of inter and intra atrial conduction assessed by tissue doppler imaging in patients with medicaly controlled hypertension and prehypertension.P631Liver stiffness by shear wave elastography, new noninvasive and quantitative tool for acute variation estimation of central venous pressure in real-time?P632Weak atrial kick contribution is associated with a risk for heart failure decompensationP633Usefulness of wave intensity analysis in predicting the response to cardiac resynchronization therapyP634Early subclinical left ventricular systolic and diastolic dysfunction in gestational hypertension and preeclampsiaP635Clinical comparison of three different echocardiographic methods for left ventricular ejection fraction and LV end diastolic volume measurementP636Assessment of right ventricular-arterial coupling parameters by 3D echocardiography in patients with pulmonary hypertension receiving specific vasodilator therapyP637Prediction of right ventricular failure after left ventricular assist device implant: assessing usefulness of standard and strain echocardiographyP638Kinematic analysis of diastolic function using the novel freely available software Echo E-waves - feasibility and reproducibilityP639Evaluation of coronary flow velocity by Doppler echocardiography in the treatment of hypertension with the ARB: correlation to the histological cardiac fibrosisP640The clinical significance of limited apical ischaemia and the prognostic value of stress echocardiography - A contemporary study from a high volume centerP641Effects of intermediate stenosis of left anterior descending coronary artery on survival in patients with chronic total occlusion of right coronary arteryP642Left ventricular remodeling after a first myocardial infarction in patients with preserved ejection fraction at dischargeP643Left atrial size and acute coronary syndromes. Let is make simple.P644Influence of STEMI reperfusion strategy on systolic and diastolic functionP645Aortic valve resistance risk-stratifies low-gradient severe aortic stenosisP646Does permanent pacemaker implantation complicate the prognosis of patients after transcatheter aortic valve implantation?P647Influence of metabolic syndrome and diabetes on progression of calcific aortic valve stenosis - The COFRASA - GENERAC StudyP648Low referral for aortic valve replacement accounts for worse long-term outcome in low versus high gradient severe aortic stenosis with preserved ejection fractionP649The impact of right ventricular function from aortic valve replacement: A randomised study comparing minimally invasive aortic valve surgery and conventional open heart surgery. Eur Heart J Cardiovasc Imaging 2016. [DOI: 10.1093/ehjci/jew250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
40
|
Affiliation(s)
- Raimund Winter
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria.
| | - Thomas Wegscheider
- Division of Special Anesthesiology, Pain and Intensive Care Medicine, Department of Anesthesiology and Intensive Care Medicine, Graz, Austria; Medical Simulation and Training Center Styria, Graz, Austria.
| | - Lars-Peter Kamolz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria; Research Unit for Safety in Health, Medical University of Graz, Graz, Austria.
| |
Collapse
|
41
|
Winter R, Al-Jawad M, Gibson C, Carter J, Frost L. 22“A GREAT FORUM FOR INTERDISCIPLINARY DISCUSSION AND REFLECTION” – LEARNING TOGETHER TO CHANGE PRACTICE ON A MIXED MEDICAL/DEMENTIA UNIT. Age Ageing 2016. [DOI: 10.1093/ageing/afw024.22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
42
|
Stella S, Li H, Stathogiannis K, Stojkovic S, Ondrus T, Plaza Lopez D, Jinno S, Verseckaite R, Oliveira Da Silva C, Altin C, Krestjyaninov MV, Izci S, Santos M, Urbano-Moral JA, Spartera M, Gonzalvez-Garcia A, Miskowiec D, Hagrass MUHAMMAD, Rady M, Reskovic Luksic V, Castaldi B, Silva T, Silva T, Silva T, Kolossvary M, Basuoni A, Miskowiec D, Peovska Mitevska I, Aguiar Rosa S, Rosa I, Marini C, Ancona F, Spagnolo P, Latib A, Romano V, Colombo A, Margonato A, Agricola E, Yuan L, Xie MX, Jin XY, Toutouzas K, Drakopoulou M, Latsios G, Synetos A, Sanidas E, Kaitozis O, Trantalis G, Gerckens U, Tousoulis D, Tesic M, Stojkovic S, Stepanovic J, Trifunovic D, Beleslin B, Giga V, Nedeljkovic I, Djordjevic Dikic A, Bartunek J, Vanderheyden M, Stockman B, Mirica C, Kotrc M, Van Praet F, Van Camp G, Penicka M, Igual Munoz B, Sanchez Lacuesta ME, Lopez Vilella R, Domenech Tort MD, Sepulveda Sanchis P, Ten Morro F, Calvillo Batlles P, Montero Argudo JA, Martinez Dolz LV, Yamada A, Sugimoto K, Ito S, Kato M, Inuzuka H, Sugiyama H, Takada K, Ozaki Y, Ishii J, Mizariene V, Gaileviciute K, Bieseviciene M, Jonkaitiene R, Jurkevicius R, Gunyeli E, Winter R, Back M, Settergren M, Manouras A, Shahgaldi K, Ozsoy HM, Gezmis E, Yilmaz M, Tunc E, Sade LE, Muderrisoglu H, Gimaev RH, Melnikova MA, Olezov NV, Ruzov VI, Dogan C, Acar R, Cetin G, Bakal RB, Unkun T, Cap M, Erdogan E, Kaymaz C, Ozdemir N, Leite L, Martins R, Baptista R, Barbosa A, Ribeiro N, Oliveira A, Castro G, Pego M, Gutierrez-Garcia-Moreno L, Rodriguez-Palomares JF, Galuppo V, Maldonado-Herrera G, Teixido-Tura G, Gruosso D, Gonzalez-Alujas T, Evangelista-Massip A, Stella S, Rosa I, Ancona F, Marini C, Latib A, Giannini F, Colombo A, Margonato A, Agricola E, Urbano-Moral JA, Matabuena-Gomez-Limon J, Grande-Trillo A, Rojas-Bermudez C, Rodriguez-Puras MJ, Martinez-Martinez A, Lopez-Pardo F, Lopez-Haldon JE, Kupczynska K, Kasprzak JD, Lipiec P, Abdelrahman Sharaf El Dein AHMED, Shawky El Serafy AHMED, Rajan RAJESH, Sveric K, Kvakan H, Strasser RH, Cekovic S, Veceric S, Separovic Hanzevacki J, Romanato S, Callegari A, Bernardinello V, Reffo E, Milanesi O, Agapito A, Sousa L, Oliveira JA, Branco LM, Timoteo AT, Galrinho A, Thomas B, Tavares NJ, Cruz Ferreira R, Agapito A, Sousa L, Oliveira JA, Branco LM, Timoteo AT, Galrinho A, Thomas B, Tavares NJ, Cruz Ferreira R, Agapito A, Sousa L, Oliveira JA, Soares R, Aguiar Rosa SA, Morais L, Thomas B, Tavares NJ, Cruz Ferreira R, Szilveszter B, Elzomor H, Karolyi M, Raaijmakers R, Benke K, Celeng C, Bagyura Z, Merkely B, Maurovich-Horvat P, Shaheen S, Abdelkader M, Rasheed T, Kasprzak JD, Lipiec P, Srbinovska E, Pop Gorceva D, Zdravkovska M, Galrinho A, Moura Branco L, Timoteo AT, Agapito A, Sousa L, Oliveira JA, Rodrigues I, Viveiros Monteiro A, Cruz Ferreira R. HIT Poster session 3Transcatheter procedures (TAVI/MitralClip)P937Comparison between 3d transesophageal echocardiography and multislice computed tomography for the aortic annulus sizing in tavi patients: implication for prosthesis sizingP938Left ventricular remodelling in chronic mitral regurgitation: from geometry to mechanics by speckle tracing imageP939Direct TAVI of a self-expanding bioprosthesis: long-term clinical outcomes.P940Prognostic value of coronary flow reserve in the culprit artery following previous myocardial infarctionP941Both MitraClip and heartport surgery prevent progressive left ventricular remodeling in very severe systolic heart failureP942Predictors for the development of microvascular obstruction in patients with acute myocardial infarction treated with primary percutaneous coronary intervention.P943Usefulness of exercise stress echocardiography in asymptomatic or mildly symptomatic patients with chronic degenerative mitral regurgitationP944Left ventricular myocardial deformation changes after aortic valve repair and replacement for aortic regurgitationP945Transcatheter aortic valve implantation: a view of the right side.P946Assessment of epicardial fat thickness and carotid intima media thickness in preeclemsiaP947Gender differences in the remodelling of left and right chambers of the heart in patients with uncontrolled hypertensionP948The five-year course of the left ventricular conventional and advanced echocardiographic parameters in patients with anterior and inferior myocardial infarction revascularized by percutaneouslyP949Aortic regurgitation and 2D derived-speckle tracking left ventricle global longitudinal strain: a connection with symptoms beyond ejection fractionP950Hypertrophic cardiomyopathy: structural abnormalities beyond hypertrophy from a prospective echocardiographic evaluationP952Echocardiographic findings of thrombosis vs endocarditis in tavi patients: a single centre experienceP953Prospective examination of the prevalence and significance of causal mechanisms of low gradient aortic valve stenosisP954Echocardiographic assessment of regional left atrial longitudinal strain by tissue Doppler and speckle tracking method - a comparison studyP955Pattern of atherosclerosis in extracranial and intracranial vessles in non diabetic, non stroke patient with atherosclerotic CADP9563D volume time curves of the left ventricle and exercise capacity testing in patients with dilated cardiomyopathy- old parameters revisedP957Left ventricular longitudinal function in hypertensive patients with septal bulgeP958Integrated imaging to evaluate cardiac performance in Fontan patientsP959The value of right ventricular global longitudinal strain in the evaluation of adult patients with repaired tetralogy of FallotP960Accurate transthoracic echocardiography parameters for the evaluation of adult patients with repaired tetralogy of Fallot: validation with cardiac magnetic resonance imagingP961Cardiac magnetic resonance imaging and cardiopulmonary exercise testing in the functional evaluation of adult patients with repaired tetralogy of FallotP962Model based iterative reconstruction techniques cause modest change in calcium scoresP963Assesment of diastolic heart function by using multi detector computed tomography ( MDCT) in comparison with tissue dopplerP964Bicuspid aortic valve morphology and its impact on aortic diameter - a meta-analysisP965Prognostic value of moderate and severe myocardial ischemia in patients with suspected coronary artery disease and normal coronary angiogramsP966Predictors of aortic dilation in patients with bicuspid aortic valve. Eur Heart J Cardiovasc Imaging 2015. [DOI: 10.1093/ehjci/jev274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
43
|
Winter R, Fazlinezhad A, Martins Fernandes S, Pellegrino M, Iriart X, Moustafa S, Stolfo D, Bieseviciene M, Patel S, Vriz O, Sarvari SI, Santos M, Berezin A, Stoebe S, Benyounes Iglesias N, De Chiara B, Soliman A, Oni O, Ricci F, Tumasyan LR, Kim KH, Popa BA, Yiangou K, Olsen RH, Cacicedo A, Monti L, Holte E, Orlic D, Trifunovic D, Nucifora G, Casalta AC, Cavalcante JL, Keramida K, Calin A, Almeida Morais L, Bandera F, Galli E, Kamal HM, Leite L, Polte CL, Martinez Santos P, Jin CN, Generati G, Reali M, Kalcik M, Cacicedo A, Nascimento H, Ferreiro Quero C, Kazum S, Madeira S, Villagra JM, Muraru D, Gobbo M, Generati G, D'andrea A, Azevedo O, Nucifora G, Cruz I, Lozano Granero VC, Stampfli SF, Marketou M, Bento D, Mohty D, Hernandez Jimenez V, Gascuena R, Ingvarsson A, Cameli M, Werther Evaldsson A, Greiner S, Michelsen MM, El Eraky AZZA, Kamal HM, D'ascenzi F, Spinelli L, Stojanovic S, Mincu RI, Vindis D, Mantovani F, Yi JE, Styczynski G, Battah AHMED, O'driscoll J, Generati G, Velasco Del Castillo S, Voilliot D, Scali MC, Garcia Campos A, Opitz B, Herold IHF, Veiga CESAR, Santos Furtado M, Khan UM, Leite L, Leite L, Leite L, Keramida K, Molnar AA, Rio P, Huang MS, Papadopoulos C, Venneri L, Onut R, Casas Rojo E, Bayat F, Aggeli C, Ben Kahla S, Abid L, Choi JH, Barreiro Perez M, Lindqvist P, Sheehan F, Vojdanparast M, Nezafati P, Teixeira R, Generati G, Bandera F, Labate V, Alfonzetti E, Guazzi M, Dinet ML, Jalal Z, Cochet H, Thambo JB, Ho TH, Shah P, Murphy K, Nelluri BK, Lee H, Wilansky S, Mookadam F, Tonet E, Merlo M, Barbati G, Gigli M, Pinamonti B, Ramani F, Zecchin M, Sinagra G, Vaskelyte JJ, Mizariene V, Lesauskaite V, Verseckaite R, Karaliute R, Jonkaitiene R, Li L, Craft M, Danford D, Kutty S, Pellegrinet M, Zito C, Carerj S, Di Bello V, Cittadini A, Bossone E, Antonini-Canterin F, Rodriguez M, Sitges M, Sepulveda-Martinez A, Gratacos E, Bijnens B, Crispi F, Leite L, Martins R, Baptista R, Barbosa A, Ribeiro N, Oliveira A, Castro G, Pego M, Samura T, Kremzer A, Tarr A, Pfeiffer D, Hagendorff A, Van Der Vynckt C, Gout O, Devys JM, Cohen A, Musca F, D'angelo L, Cipriani MG, Parolini M, Rossi A, Santambrogio GM, Russo C, Giannattasio C, Moreo A, Moharram M, Gamal A, Reda A, Adebiyi A, Aje A, Aquilani R, Dipace G, Bucciarelli V, Bianco F, Miniero E, Scipioni G, De Caterina R, Gallina S, Adamyan KG, Chilingaryan AL, Tunyan LG, Cho JY, Yoon HJ, Ahn Y, Jeong MH, Cho JG, Park JC, Popa A, Cerin G, Azina CH, Yiangou A, Georgiou C, Zitti M, Ioannides M, Chimonides S, Pedersen LR, Snoer M, Christensen TE, Ghotbi AA, Hasbak P, Kjaer A, Haugaard SB, Prescott E, Velasco Del Castillo S, Gomez Sanchez V, Anton Ladislao A, Onaindia Gandarias J, Rodriguez Sanchez I, Jimenez Melo O, Garcia Cuenca E, Zugazabeitia Irazabal G, Romero Pereiro A, Nardi B, Di Giovine G, Malanchini G, Scardino C, Balzarini L, Presbitero P, Gasparini GL, Tesic M, Zamaklar-Trifunovic D, Vujisic-Tesic B, Borovic M, Milasinovic D, Zivkovic M, Kostic J, Belelsin B, Ostojic M, Krljanac G, Savic L, Asanin M, Aleksandric S, Petrovic M, Zlatic N, Lasica R, Mrdovic I, Muser D, Zanuttini D, Tioni C, Bernardi G, Spedicato L, Proclemer A, Galli E, Szymanski C, Salaun E, Lavoute C, Haentjens J, Tribouilloy C, Mancini J, Donal E, Habib G, Delgado-Montero A, Dahou A, Caballero L, Rijal S, Gorcsan J, Monin JL, Pibarot P, Lancellotti P, Kouris N, Kostopoulos V, Giannaris V, Trifou E, Markos L, Mihalopoulos A, Mprempos G, Olympios CD, Mateescu AD, Rosca M, Beladan CC, Enache R, Gurzun MM, Varga P, Calin C, Ginghina C, Popescu BA, Galrinho A, Branco L, Gomes V, Timoteo AT, Daniel P, Rodrigues I, Rosa S, Fragata J, Ferreira R, Generati G, Pellegrino M, Carbone F, Labate V, Alfonzetti E, Guazzi M, Leclercq C, Samset E, Donal E, Oraby MA, Eleraky AZ, Yossuef MA, Baptista R, Teixeira R, Ribeiro N, Oliveira AP, Barbosa A, Castro G, Martins R, Elvas L, Pego M, Gao SA, Lagerstrand KM, Johnsson ÅA, Bech-Hanssen O, Vilacosta I, Batlle Lopez E, Sanchez Sauce B, Jimenez Valtierra J, Espana Barrio E, Campuzano Ruiz R, De La Rosa Riestra A, Alonso Bello J, Perez Gonzalez F, Wan S, Sun JP, Lee AP, Bandera F, Pellegrino M, Carbone F, Labate V, Alfonzetti E, Guazzi M, Cimino S, Salatino T, Silvetti E, Mancone M, Pennacchi M, Giordano A, Sardella G, Agati L, Yesin M, Gunduz S, Gursoy MO, Astarcioglu MA, Karakoyun S, Bayam E, Cersit S, Ozkan M, Velasco Del Castillo S, Gomez Sanchez V, Anton Ladislao A, Onaindia Gandarias J, Rodriguez Sanchez I, Jimenez Melo O, Quintana Razcka O, Romero Pereiro A, Zugazabeitia Irazabal G, Braga M, Flores L, Ribeiro V, Melao F, Dias P, Maciel MJ, Bettencourt P, Mesa Rubio MD, Ruiz Ortiz M, Delgado Ortega M, Sanchez Fernandez J, Duran Jimenez E, Morenate Navio C, Romero M, Pan M, Suarez De Lezo J, Vaturi M, Weisenberg D, Monakier D, Valdman A, Vaknin- Assa H, Assali A, Kornowski R, Sagie A, Shapira Y, Ribeiras R, Abecasis J, Teles R, Castro M, Tralhao A, Horta E, Brito J, Andrade M, Mendes M, Avegliano G, Ronderos R, Matta MG, Camporrotondo M, Castro F, Albina G, Aranda A, Navia D, Siciliano M, Migliore F, Cavedon S, Folino F, Pedrizzetti G, Bertaglia M, Corrado D, Iliceto S, Badano LP, Merlo M, Stolfo D, Losurdo P, Ramani F, Barbati G, Pivetta A, Pinamonti B, Sinagra GF, Di Lenarda A, Bandera F, Pellegrino M, Labate V, Carbone F, Alfonzetti E, Guazzi M, Di Palma E, Baldini L, Verrengia M, Vastarella R, Limongelli G, Bossone E, Calabro' R, Russo MG, Pacileo G, Cruz I, Correia E, Bento D, Teles L, Lourenco C, Faria R, Domingues K, Picarra B, Marques N, Muser D, Gianfagna P, Morocutti G, Proclemer A, Gomes AC, Lopes LR, Stuart B, Caldeira D, Morgado G, Almeida AR, Canedo P, Bagulho C, Pereira H, Pardo Sanz A, Marco Del Castillo A, Monteagudo Ruiz JM, Rincon Diaz LM, Ruiz Rejon F, Casas E, Hinojar R, Fernandez-Golfin C, Zamorano Gomez JL, Erhart L, Staehli BE, Kaufmann BA, Tanner FC, Kontaraki J, Parthenakis F, Maragkoudakis S, Zacharis E, Patrianakos A, Vardas P, Domingues K, Correia E, Lopes L, Teles L, Picarra B, Magalhaes P, Faria R, Lourenco C, Azevedo O, Boulogne C, Magne J, Damy T, Martin S, Boncoeur MP, Aboyans V, Jaccard A, Saavedra Falero J, Alberca Vela MT, Molina Blazquez L, Mata Caballero R, Serrano Rosado JA, Elviro R, Di Gioia C, Fernandez Rozas I, Manzano MC, Martinez Sanchez JI, Molina M, Palma J, Werther Evaldsson A, Radegran G, Stagmo M, Waktare J, Roijer A, Meurling CJ, Righini FM, Sparla S, Di Tommaso C, Focardi M, D'ascenzi F, Tacchini D, Maccherini M, Henein M, Mondillo S, Ingvarsson A, Waktare J, Thilen U, Stagmo M, Roijer A, Radegran G, Meurling C, Jud A, Aurich M, Katus HA, Mereles D, Faber R, Pena A, Mygind ND, Suhrs HE, Zander M, Prescott E, Handoka NESRIN, Ghali MONA, Eldahshan NAHED, Ibrahim AHMED, Al-Eraky AZ, El Attar MA, Omar AS, Pelliccia A, Alvino F, Solari M, Cameli M, Focardi M, Bonifazi M, Mondillo S, Giudice CA, Assante Di Panzillo E, Castaldo D, Riccio E, Pisani A, Trimarco B, Deljanin Ilic M, Ilic S, Magda LS, Florescu M, Velcea A, Mihalcea D, Chiru A, Popescu BO, Tiu C, Vinereanu D, Hutyra M, Cechakova E, Littnerova S, Taborsky M, Lugli R, Bursi F, Fabbri M, Modena MG, Stefanelli G, Mussini C, Barbieri A, Youn HJ, O JH, Yoon HJ, Jung HO, Shin GJ, Rdzanek A, Pietrasik A, Kochman J, Huczek Z, Milewska A, Marczewska M, Szmigielski CA, Abd Eldayem SOHA, El Magd El Bohy ABO, Slee A, Peresso V, Nazir S, Sharma R, Bandera F, Pellegrino M, Labate V, Carbone F, Alfonzetti E, Guazzi M, Anton Ladislao A, Gomez Sanchez V, Cacidedo Fernandez Bobadilla A, Onaindia Gandarias JJ, Rodriguez Sanchez I, Romero Pereira A, Quintana Rackza O, Jimenez Melo O, Zugazabeitia Irazabal G, Huttin O, Venner C, Deballon R, Manenti V, Villemin T, Olivier A, Sadoul N, Juilliere Y, Selton-Suty C, Simioniuc A, Mandoli GE, Dini FL, Marzilli M, Picano E, Martin-Fernandez M, De La Hera Galarza JM, Corros-Vicente C, Leon-Aguero V, Velasco-Alonso E, Colunga-Blanco S, Fidalgo-Arguelles A, Rozado-Castano J, Moris De La Tassa C, Stelzmueller ME, Wisser W, Reichenfelser W, Mohl W, Saporito S, Mischi M, Bouwman RA, Van Assen HC, Van Den Bosch HCM, De Lepper A, Korsten HHM, Houthuizen P, Rodrigues A, Leal G, Silvestre O, Andrade J, Hjertaas JJ, Greve G, Matre K, Teixeira R, Baptista R, Barbosa A, Ribeiro N, Castro G, Martins R, Cardim N, Goncalves L, Pego M, Teixeira R, Baptista R, Barbosa A, Ribeiro N, Castro G, Martins R, Cardim N, Goncalves L, Pego M, Teixeira R, Baptista R, Barbosa A, Oliveira AP, Castro G, Martins R, Cardim N, Goncalves L, Pego M, Kouris N, Kostopoulos V, Markos L, Olympios CD, Kovacs A, Tarnoki AD, Tarnoki DL, Kolossvary M, Apor A, Maurovich-Horvat P, Jermendy G, Sengupta P, Merkely B, Viveiros Monteiro A, Galrinho A, Pereira-Da-Silva T, Moura Branco L, Timoteo A, Abreu J, Leal A, Varela F, Cruz Ferreira R, Yang LT, Tsai WC, Mpaltoumas K, Fotoglidis A, Triantafyllou K, Pagourelias E, Kassimatis E, Tzikas S, Kotsiouros G, Mantzogeorgou E, Vassilikos V, Calicchio F, Manivarmane R, Pareek N, Baksi J, Rosen S, Senior R, Lyon AR, Khattar RS, Marinescu C, Onciul S, Zamfir D, Tautu O, Dorobantu M, Carbonell San Roman A, Rincon Diez LM, Gonzalez Gomez A, Fernandez Santos S, Lazaro Rivera C, Moreno Vinues C, Sanmartin Fernandez M, Fernandez-Golfin C, Zamorano Gomez JL, Alirezaei T, Karimi AS, Kakiouzi V, Felekos I, Panagopoulou V, Latsios G, Karabela M, Petras D, Tousoulis D, Abid L, Abid D, Kammoun S, Ben Kahla S, Lee JW, Martin Fernandez M, Costilla Garcia SM, Diaz Pelaez E, Moris De La Tassa C. Poster session 3The imaging examinationP646Simulator-based testing of skill in transthoracic echoP647Clinical and echocardiographic characteristics of isolated left ventricular non-compactionP648Appropriate use criteria of transthoracic echocardiography and its clinical impact in an aged populationAnatomy and physiology of the heart and great vesselsP649Prevalence and determinants of exercise oscillatory ventilation in the EUROEX trial populationAssessment of diameters, volumes and massP650Left atrial remodeling after percutaneous left atrial appendage closureP651Global atrial performance with tyrosine kinase inhibitors in metastatic renal cell carcinomaP652Early right ventricular response to cardiac resynchronization therapy: impact on clinical outcomesP653Parameters of speckle-tracking echocardiography and biomechanical values of a dilative ascending aortaAssessments of haemodynamicsP654Right atrial hemodynamics in infants and children: observations from 3-dimensional echocardiography derived right atrial volumesAssessment of systolic functionP655One-point carotid wave intensity predicts cardiac mortality in patients with congestive heart failure and reduced ejection fractionP656Persistence of cardiac remodeling in adolescents with previous fetal growth restrictionP6572D speckle tracking-derived left ventricle global longitudinal strain and left ventricular dysfunction stages: a useful discriminator in moderate-to-severe aortic regurgitationP658Global longitudinal strain and strain rate in type two diabetes patients with chronic heart failure: relevance to circulating osteoprotegerinP659Analysis of left ventricular function in patients before and after surgical and interventional mitral valve therapyP660Left ventricular end-diastolic volume is complementary with global longitudinal strain for the prediction of left ventricular ejection fraction in echocardiographic daily practiceP661Left ventricular assist device, right ventricle function, and selection bias: the light side of the moonP662Assessment of right ventricular function in patients with anterior ST elevation myocardial infarction; a 2-d speckle tracking studyP663Right ventricular systolic function assessment in sickle cell anaemia using echocardiographyAssessment of diastolic functionP664Prognostic value of transthoracic cardiopulmonary ultrasound in cardiac surgery intensive care unitP665Comparative efficacy of renin-angiotensin system modulators on prognosis, right heart and left atrial parameters in patients with chronic heart failure and preserved left ventricular systolic functionP666Left atrial volume index is the most significant diastolic functional parameter of hemodynamic burden as measured by NT-proBNP in acute myocardial infarctionP667Preventive echocardiographic screening. preliminary dataP668Assessment of the atrial electromechanical delay and the mechanical functions of the left atrium in patients with diabetes mellitus type IIschemic heart diseaseP669Coronary flow velocity reserve by echocardiography as a measure of microvascular function: feasibility, reproducibility and agreement with PET in overweight patients with coronary artery diseaseP670Influence of cardiovascular risk in the occurrence of events in patients with negative stress echocardiographyP671Prevalence of transmural myocardial infarction and viable myocardium in chronic total occlusion (CTO) patientsP672The impact of the interleukin 6 receptor antagonist tocilizumab on mircovascular dysfunction after non st elevation myocardial infarction assessed by coronary flow reserve from a randomized studyP673Impact of manual thrombus aspiration on left ventricular remodeling: the echocardiographic substudy of the randomized Physiologic Assessment of Thrombus Aspirtion in patients with ST-segment ElevatioP674Acute heart failure in STEMI patients treated with primary percutaneous coronary intervention is related to transmural circumferential myocardial strainP675Long-term prognostic value of infarct size as assessed by cardiac magnetic resonance imaging after a first st-segment elevation myocardial infarctionHeart valve DiseasesP676Prognostic value of LV global longitudinal strain in aortic stenosis with preserved LV ejection fractionP677Importance of longitudinal dyssynchrony in low flow low gradient severe aortic stenosis patients undergoing dobutamine stress echocardiography. a multicenter study (on behalf of the HAVEC group)P678Predictive value of left ventricular longitudinal strain by 2D Speckle Tracking echocardiography, in asymptomatic patients with severe aortic stenosis and preserved ejection fractionP679Clinical and echocardiographic characteristics of the flow-gradient patterns in patients with severe aortic stenosis and preserved left ventricular ejection fractionP6802D and 3D speckle tracking assessment of left ventricular function in severe aortic stenosis, a step further from biplane ejection fractionP681Functional evaluation in aortic stenosis: determinant of exercise capacityP682Left ventricular mechanics: novel tools to evaluate left ventricular function in patients with primary mitral regurgitationP683Plasma B-type natriuretic peptide level in patients with isolated rheumatic mitral stenosisP684Quantitative assessment of severity in aortic regurgitation and the influence of elastic proprieties of thoracic aortaP685Characterization of chronic aortic and mitral regurgitation using cardiovascular magnetic resonanceP686Functional mitral regurgitation: a warning sign of underlying left ventricular systolic dysfunction in heart failure with preserved ejection fraction.P687Secondary mitral valve tenting in primary degenerative prolapse quantified by three-dimensional echocardiography predicts regurgitation recurrence after mitral valve repairP688Advanced heart failure with reduced ejection fraction and severe mitral insufficiency compensate with a higher oxygen peripheral extraction to a reduced cardiac output vs oxygen uptake response to maxP689Predictors of acute procedural success after percutaneous mitraclip implantation in patients with moderate-to-severe or severe mitral regurgitation and reduced ejection fractionP690The value of transvalvular gradients obtained by transthoracic echocardiography in estimation of severe paravalvular leakage in patients with mitral prosthetic valvesP691Characteristics of infective endocarditis in a non tertiary hospitalP692Infective endocarditis: predictors of severity in a 3-year retrospective analysisP693New echocardiographic predictors of early recurrent mitral functional regurgitation after mitraclip implantationP694Transesophageal echocardiography can be reliably used for the allocation of patients with severe aortic stenosis for tras-catheter aortic valve implantationP695Annular sizing for transcatheter aortic valve selection. A comparison between computed tomography and 3D echocardiographyP696Association between aortic dilatation, mitral valve prolapse and atrial septal aneurysm: first descriptive study.CardiomyopathiesP698Cardiac resynchronization therapy by multipoint pacing improves the acute response of left ventricular mechanics and fluid dynamics: a three-dimensional and particle image velocimetry echo studyP699Long-term natural history of right ventricular function in dilated cardiomyopathy: innocent bystander or leading actor?P700Right to left ventricular interdependence at rest and during exercise assessed by the ratio between pulmonary systolic to diastolic time in heart failure reduced ejection fractionP701Exercise strain imaging demonstrates impaired right ventricular contractile reserve in patients with hypertrophic cardiomyopathyP702Prevalence of overt left ventricular dysfunction (burn-out phase) in a portuguese population of hypertrophic cardiomyopathy, a multicentre studyP703Systolic and diastolic myocardial mechanics in hypertrophic cardiomyopathy and their link to the extent of hypertrophy, replacement fibrosis and interstitial fibrosisP704Multimodality imaging and genotype-phenotype associations in a cohort of patients with hypertrophic cardiomyopathy studied by next generation sequencing and cardiac magnetic resonanceP705Sudden cardiac death risk assessment in apical hypertrophic cardiomyopathy: do we need to add MRI to the equation?P706Prognostic value of left ventricular ejection fraction, proBNP, exercise capacity, and NYHA functional class in patients with left ventricular non-compaction cardiomyopathyP707The anti-hypertrophic microRNAs miR-1, miR-133a and miR-26b and their relationship to left ventricular hypertrophy in patients with essential hypertensionP708Prevalence of left ventricular systolic dysfunction in a portuguese population of left ventricular non-compaction cardiomyopathy, a multicentre studyP709Assessment of systolic and diastolic features in light chain amyloidosis: an echocardiographic and cardiac magnetic resonance studyP710Morbid obesity-associated hypertension identifies bariatric surgery best responders: Clinical and echocardiographic follow up studyP711Echocardiographic markera for overhydration in patients under haemodialysisP712Gender aspects of right ventricular size and function in clinically stable heart transplant patientsP713Evidence of cardiac stem cells from the left ventricular apical tip in patients undergone LVAD implant: a comparative strain-ultrastructural studySystemic diseases and other conditionsP714Speckle tracking assessment of right ventricular function is superior for differentiation of pressure versus volume overloaded right ventricleP715Prognostic value of pulmonary arterial pressure: analysis in a large dataset of timely matched non-invasive and invasive assessmentsP716Effect of the glucagon-like peptide-1 analogue liraglutide on left ventricular diastolic and systolic function in patients with type 2 diabetes: a randomised, single-blinded, crossover pilot studyP717Tissue doppler evaluation of left ventricular functions, left atrial mechanical functions and atrial electromechanical delay in juvenile idiopathic arthritisP718Echocardiographic detection of subclinical left ventricular dysfunction in patients with rheumatoid arthritisP719Left ventricular strain values are unaffected by intense training: a longitudinal, speckle-tracking studyP720Diastolic left ventricular function in autosomal dominant polycystic kidney disease: a matched-cohort, speckle-tracking echocardiographic studyP721Relationship between adiponectin level and left ventricular mass and functionP722Left atrial function is impaired in patients with multiple sclerosisMasses, tumors and sources of embolismP723Paradoxical embolization to the brain in patients with acute pulmonary embolism and confirmed patent foramen ovale with bidirectional shunt, results of prospective monitoringP724Following the European Society of Cardiology proposed echocardiographic algorithm in elective patients with clinical suspicion of infective endocarditis: diagnostic yield and prognostic implicationsP725Metastatic cardiac18F-FDG uptake in patients with malignancy: comparison with echocardiographic findingsDiseases of the aortaP726Echocardiographic measurements of aortic pulse wave velocity correlate well with invasive methodP727Assessment of increase in aortic and carotid intimal medial thickness in adolescent type 1 diabetic patientsStress echocardiographyP728Determinants and prognostic significance of heart rate variability in renal transplant candidates undergoing dobutamine stress echocardiographyP729Pattern of cardiac output vs O2 uptake ratio during maximal exercise in heart failure with reduced ejection fraction: pathophysiological insightsP730Prognostic value and predictive factors of cardiac events in patients with normal exercise echocardiographyP731Right ventricular mechanics during exercise echocardiography: normal values, feasibility and reproducibility of conventional and new right ventricular function parametersP732The added value of exercise-echo in heart failure patients: assessing dynamic changes in extravascular lung waterP733Applicability of appropriate use criteria of exercise stress echocardiography in real-life practice: what have we improved with new documents?Transesophageal echocardiographyP7343D-TEE guidance in percutaneous mitral valve interventions correcting mitral regurgitationContrast echocardiographyP735Pulmonary transit time by contrast enhanced ultrasound as parameter for cardiac performance: a comparison with magnetic resonance imaging and NT-ProBNPReal-time three-dimensional TEEP736Optimal parameter selection for anisotropic diffusion denoising filters applied to aortic valve 4d echocardiographsP737Left ventricle systolic function in non-alcoholic cirrhotic candidates for liver transplantation: a three-dimensional speckle-tracking echocardiography studyTissue Doppler and speckle trackingP738Optimizing speckle tracking echocardiography strain measurements in infants: an in-vitro phantom studyP739Usefulness of vascular mechanics in aortic degenerative valve disease to estimate prognosis: a two dimensional speckle tracking studyP740Vascular mechanics in aortic degenerative valve disease: a two dimensional speckle-tracking echocardiography studyP741Statins and vascular load in aortic valve disease patients, a speckle tracking echocardiography studyP742Is Left Bundle Branch Block only an electrocardiographic abnormality? Study of LV function by 2D speckle tracking in patients with normal ejection fractionP743Dominant inheritance of global longitudinal strain in a population of healthy and hypertensive twinsP744Mechanical differences of left atria in paroxysmal atrial fibrillation: A speckle-tracking study.P745Different distribution of myocardial deformation between hypertrophic cardiomyopathy and aortic stenosisP746Left atrial mechanics in patients with chronic renal failure. Incremental value for atrial fibrillation predictionP747Subclinical myocardial dysfunction in cancer patients: is there a direct effect of tumour growth?P748The abnormal global longitudinal strain predicts significant circumflex artery disease in low risk acute coronary syndromeP7493D-Speckle tracking echocardiography for assessing ventricular funcion and infarct size in young patients after acute coronary syndromeP750Evaluation of left ventricular dyssynchrony by echocardiograhy in patients with type 2 diabetes mellitus without clinically evident cardiac diseaseP751Differences in myocardial function between peritoneal dialysis and hemodialysis patients: insights from speckle tracking echoP752Appraisal of left atrium changes in hypertensive heart disease: insights from a speckle tracking studyP753Left ventricular rotational behavior in hypertensive patients: Two dimensional speckle tracking imaging studyComputed Tomography & Nuclear CardiologyP754Effectiveness of adaptive statistical iterative reconstruction of 64-slice dual-energy ct pulmonary angiography in the patients with reduced iodine load: comparison with standard ct pulmonary angiograP755Clinical prediction model to inconclusive result assessed by coronary computed tomography angiography. Eur Heart J Cardiovasc Imaging 2015. [DOI: 10.1093/ehjci/jev277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
44
|
Erlkamp M, Grobelny S, Winter R. Crowding effects on the temperature and pressure dependent structure, stability and folding kinetics of Staphylococcal Nuclease. Phys Chem Chem Phys 2015; 16:5965-76. [PMID: 24549181 DOI: 10.1039/c3cp55040k] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
FT-IR spectroscopic, small-angle X-ray scattering and calorimetric measurements have been applied to explore the effect of the macromolecular crowder agent Ficoll on the temperature- and pressure-dependent stability diagram and folding reaction of the protein Staphylococcal Nuclease (SNase). Additionally, we compare the experimental data with approximate theoretical predictions. We found that temperature- and pressure-induced equilibrium unfolding of SNase is markedly shifted to higher temperatures and pressures in 30 wt% Ficoll solutions. The structure of the unfolded state ensemble does not seem to be strongly influenced in the presence of the crowder. Self-crowding effects have been found to become important at SNase concentrations above 10 wt% only. Our kinetic results show that the folding rate of SNase decreases markedly in the presence of Ficoll. These results indicate that besides the commonly encountered excluded volume effect, other factors need to be considered when assessing confinement effects on protein folding kinetics. Among those, crowder-induced viscosity changes seem to be prominent.
Collapse
Affiliation(s)
- M Erlkamp
- TU Dortmund University, Department of Chemistry and Chemical Biology, Physical Chemistry I - Biophysical Chemistry, D-44221 Dortmund, Germany.
| | | | | |
Collapse
|
45
|
Draeger J, Winter R. The corneal endothelium as a standard for the assessment of complications in microsurgery. Dev Ophthalmol 2015; 13:30-5. [PMID: 3595958 DOI: 10.1159/000413609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Endothelial cell morphology is an important parameter for the quality control of different surgical techniques, especially in the anterior segment. The minimizing effect of hyaluronic acid in implant surgery can be demonstrated by the decrease of endothelial cell loss as compared to standard techniques. Besides, we can show that the implantation of artificial lenses into the capsular bag is less traumatizing to the cornea than anterior chamber lenses. Other factors to control the surgical techniques are the keratoplastics, especially modified to different trephination techniques and last but not least YAG laser surgery of the cataract membranes. In the latter, there is a direct correlation between endothelial trauma and distance of focus and total energy. Even in isolated cases we can draw conclusions from endothelial morphology to intra-postoperative complications. New surgical techniques which could lead to damage of the cornea should be tested by endothelial cell analysis.
Collapse
|
46
|
|
47
|
Draeger J, Böhnke M, Winter R. Corneal preservation: present state, methods, results, complications. Dev Ophthalmol 2015; 11:15-31. [PMID: 2410308 DOI: 10.1159/000411083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
48
|
Winter R, Draeger J. Reattachment of the retina by vitreous replacement using high molecular substances under microsurgical conditions. Dev Ophthalmol 2015; 5:131-4. [PMID: 7343348 DOI: 10.1159/000400952] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
49
|
Winter R, Draeger J. Wide-field system for posterior segment microsurgery--an advantage? Dev Ophthalmol 2015; 18:97-101. [PMID: 2673882 DOI: 10.1159/000417096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- R Winter
- Department of Ophthalmology, Hamburg University, FRG
| | | |
Collapse
|
50
|
Affiliation(s)
- R Winter
- Department of Ophthalmology, Hamburg University, FRG
| |
Collapse
|