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Galassi AR, Vadalà G, Maniscalco L, Gasparini G, Jo D, Bozinovic NZ, Gorgulu S, Gehrig T, Grancini L, Ungi I, La Scala E, Ladwiniec A, Stojkovic S, La Manna A, Tumscitz C, Elhadad S, Werner GS, Sianos G, Garbo R, Carlino M, Mashayekhi K, di Mario C. Wire-based antegrade dissection re-entry technique for coronary chronic total occlusions percutaneous revascularization: Experience from the ERCTO Registry. Catheter Cardiovasc Interv 2023; 102:864-877. [PMID: 37668012 DOI: 10.1002/ccd.30827] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 07/26/2023] [Accepted: 08/24/2023] [Indexed: 09/06/2023]
Abstract
BACKGROUND The recent development and widespread adoption of antegrade dissection re-entry (ADR) techniques have been underlined as one of the antegrade strategies in all worldwide CTO consensus documents. However, historical wire-based ADR experience has suffered from disappointing long-term outcomes. AIMS Compare technical success, procedural success, and long-term outcome of patients who underwent wire-based ADR technique versus antegrade wiring (AW). METHODS One thousand seven hundred and ten patients, from the prospective European Registry of Chronic Total Occlusions (ERCTO), underwent 1806 CTO procedures between January 2018 and December 2021, at 13 high-volume ADR centers. Among all 1806 lesions attempted by the antegrade approach, 72% were approached with AW techniques and 28% with wire-based ADR techniques. RESULTS Technical and procedural success rates were lower in wire-based ADR than in AW (90.3% vs. 96.4%, p < 0.001; 87.7% vs. 95.4%, p < 0.001, respectively); however, wire-based ADR was used successfully more often in complex lesions as compared to AW (p = 0.017). Wire-based ADR was used in most cases (85%) after failure of AW or retrograde procedures. At a mean clinical follow-up of 21 ± 15 months, major adverse cardiac and cerebrovascular events (MACCEs) did not differ between AW and wire-based ADR (12% vs. 15.1%, p = 0.106); both AW and wire-based ADR procedures were associated with significant symptom improvements. CONCLUSIONS As compared to AW, wire-based ADR is a reliable and effective strategy successfully used in more complex lesions and often after the failure of other techniques. At long-term follow-up, patient's MACCEs and symptoms improvement were similar in both antegrade techniques.
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Affiliation(s)
- Alfredo R Galassi
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, University of Palermo, Palermo, Italy
| | - Giuseppe Vadalà
- Division of Cardiology, University Hospital "P. Giaccone", Palermo, Italy
| | - Laura Maniscalco
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, University of Palermo, Palermo, Italy
| | - Gabriele Gasparini
- Department of Invasive Cardiology, Humanitas Clinical and Research Center, IRCCS, Rozzano, Italy
| | - Dens Jo
- Department of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium
| | | | - Sevket Gorgulu
- Cardiology Department, Acıbadem University Medical Faculty, Istanbul, Turkey
| | | | | | - Imre Ungi
- Second Department of Internal Medicine and Cardiology Center, University of Szeged, Szeged, Hungary
| | | | - Andrew Ladwiniec
- Department of Cardiovascular Sciences and the NIHR Leicester Biomedical Research Centre, Glenfield Hospital, University of Leicester and University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Sinisa Stojkovic
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
- mDepartment of Cardiology, Clinical Center of Serbia, Beograd, Belgrade, Serbia
| | - Alessio La Manna
- Cardio-Thoracic-Vascular Department, Azienda Ospedaliero-Universitaria "Policlinico-Vittorio Emanuele", University of Catania, Catania, Italy
| | - Carlo Tumscitz
- Cardiovascular Institute, Azienda Ospedaliero-Universitaria di Ferrara, Cona, Ferrara, Italy
| | - Simon Elhadad
- Department of Cardiology, CH Marne La Vallée, Jossigny, France
| | - Gerald S Werner
- Medizinische Klinik I, Klinikum Darmstadt, Darmstadt, Germany
| | - Georgios Sianos
- 1st Cardiology Department, AHEPA University Hospital, Thessaloniki, Greece
| | - Roberto Garbo
- nterventional Cardiology Department, Maria Pia Hospital, GVM Care and Research, Turin, Italy
| | - Mauro Carlino
- Interventional Cardiology Unit, San Raffaele Scientific Institute, Milan, Italy
| | - Kambis Mashayekhi
- Division of Cardiology and Angiology II, University Heart Center Freiburg-Bad Krozingen, Bad Krozingen, Germany
| | - Carlo di Mario
- Department of Clinical & Experimental Medicine, Structural Interventional Cardiology Division, Careggi University Hospital, Florence, Italy
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Leick J, Rheude T, Denne M, Cassese S, Kastrati A, Hauptmann F, Gehrig T, Kuna C, Lindner M, Lauterbach M, Werner N. Comparison of long-term outcome in patients with calcified stenosis treated with intravascular lithotripsy or with modified balloon angioplasty: a propensity score-adjusted study. Front Cardiovasc Med 2023; 10:1185422. [PMID: 37255702 PMCID: PMC10225498 DOI: 10.3389/fcvm.2023.1185422] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 04/26/2023] [Indexed: 06/01/2023] Open
Abstract
Background The aim of this two-center, all-comers registry was to compare the effectiveness and safety of intravascular lithotripsy (IVL) to that of modified balloon angioplasty (MB). MB angioplasty using a cutting or scoring balloon is commonly used in patients with calcified coronary arteries. IVL is a new technology for lesion preparation. This is the first study to compare MB with IVL. Methods The cohort included all patients treated by MB angioplasty or IVL between 2019 and 2021. The primary endpoint was strategy success (<20% residual stenosis). The secondary endpoint was long-term safety outcomes [cardiac death, acute myocardial infarction (AMI), target lesion failure/revascularization (TVR)]. Quantitative coronary angiography (QCA) was performed in all patients. Primary and secondary endpoints were compared using inverse probability of treatment weighting (IPTW) for treatment effect estimation. Results A total of n = 86 patients were treated by IVL and n = 92 patients by MB angioplasty. The primary endpoint was reached in 152 patients (85.4%). Patients in the IVL group had less residual stenosis (5.8% vs. 22.8%; p = 0.001) in QCA. Weighted multivariable regression analysis revealed that IVL had a significant positive effect on reaching the primary endpoint of strategy success [odds ratio (OR) 24.58; 95% confidence interval (95% CI) 7.40-101.86; p = 0.001]. In addition, severe calcification was shown to result in a lower probability of achieving the primary endpoint (OR 0.08; 95% CI 0.02-0.24; p = 0.001). During the follow-up period (450 days) there was no difference in cardiovascular mortality rate [IVL (n = 5) 2.8% vs. MB (n = 3) 1.7%; p = 0.129]. Patients with unstable angina at the time of the index procedure had the highest probability of cardiovascular death [hazard ratio (HR) 7.136; 95% CI 1.248-40.802; p = 0.027]. No differences were found in long-term rates of AMI (IVL 1.7% vs. MB 2.8%; p = 0.399; IVL HR 2.73; 95% CI 0.4-17.0; p = 0.281) or TVR (IVL 5.6% vs. MB 9%; p = 0.186; IVL HR 0.78; 95% CI 0.277-2.166; p = 0.626). Conclusion IVL leads to a significantly better angiographic intervention outcome compared to MB angioplasty in our cohort. During long-term follow-up, no differences in cardiovascular mortality, rate of acute myocardial infarction, or target lesion failure/revascularization were observed.
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Affiliation(s)
- Jürgen Leick
- Department of Cardiology, Heart Centre Trier, Barmherzige Brueder Hospital, Trier, Germany
| | - Tobias Rheude
- Department of Cardiovascular Diseases, German Heart Centre, Technical University Munich, Munich, Germany
| | - Michael Denne
- Department of Cardiology, Heart Centre Trier, Barmherzige Brueder Hospital, Trier, Germany
| | - Salvatore Cassese
- Department of Cardiovascular Diseases, German Heart Centre, Technical University Munich, Munich, Germany
| | - Adnan Kastrati
- Department of Cardiovascular Diseases, German Heart Centre, Technical University Munich, Munich, Germany
| | - Felix Hauptmann
- Department of Cardiology, Heart Centre Trier, Barmherzige Brueder Hospital, Trier, Germany
| | - Thomas Gehrig
- Department of Cardiology, Heart Centre Trier, Barmherzige Brueder Hospital, Trier, Germany
| | - Constantin Kuna
- Department of Cardiovascular Diseases, German Heart Centre, Technical University Munich, Munich, Germany
| | - Michael Lindner
- Department of Cardiology, Heart Centre Trier, Barmherzige Brueder Hospital, Trier, Germany
| | - Michael Lauterbach
- Department of Cardiology, Heart Centre Trier, Barmherzige Brueder Hospital, Trier, Germany
| | - Nikos Werner
- Department of Cardiology, Heart Centre Trier, Barmherzige Brueder Hospital, Trier, Germany
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Leick J, Rheude T, Cassese S, Kastrati A, Hauptmann F, Gehrig T, Constantin K, Lindner M, Werner N. CRT-100.4 Angiographic Result and Long-Term Outcome in Patients With In-Stent Restenosis Treated With Intravascular Lithotripsy Compared to Debulking Balloon Angioplasty. JACC Cardiovasc Interv 2023. [DOI: 10.1016/j.jcin.2023.01.094] [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: 02/22/2023]
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Han E, Fritzer-Szekeres M, Szekeres T, Gehrig T, Gyongyosi M, Bergler-Klein J. Elevated high-sensitivity C-reactive protein and the risk for cardiovascular events in chronic cardiac disease. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2292] [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: 11/15/2022] Open
Abstract
Abstract
Background
High sensitivity C-reactive protein (hs-CRP) is a biomarker used for risk prediction for cardiovascular disease by assessing low concentration of inflammation. This study aims to assess the event-free time for the composite outcome between patients of different hs-CRP risk groups and the possible predictive value of hs-CRP for event occurrence in patients with chronic cardiac disease.
Methods
Data from 607 consecutive patients referred for cardiovascular risk assessment with hs-CRP from November 2017 to October 2018 were reviewed retrospectively. Routine peripheral venous blood samples were taken on the day of study inclusion and sent to the local laboratory, where laboratory parameters were analyzed and processed in accordance with local laboratory standards. 570 patients who had hs-CRP measurement by immunoturbidimetric assay were included in the analysis and classified into three (low-, medium- and high-risk) groups (hs-CRP cut-off: <1, 1–3, >3 mg/L). Association between hs-CRP and occurrence of the composite outcome (acute myocardial infarction, stroke, coronary intervention (percutaneous coronary intervention or bypass surgery) or death) was determined with Cox regression analysis and visualized with Kaplan Meier curves.
Results
In total, 570 patients from our cardiology outpatient clinic were included in this study. Cohorts were formed according to hs-CRP risk groups, 209 (36.7%), 226 (39.6%) and 135 (23.7%) patients were classified as low-, medium- and high-risk, respectively. The composite endpoint occurred in 93 (19.1%) of the 486 patients with available follow-up. Events occurred in 29 (16.3%), 30 (15.7%), 34 (29.1%) patients of the low-, medium- and high-risk group, respectively (p=0.016). There was a significant difference in the event-free survival time patients of the low- and medium-risk groups compared with patients in the high-risk group (p=0.015). The difference between groups is shown by the Kaplan-Meier plot (log rank test, p=0.01) (Figure 1). Univariate Cox proportional-hazard analysis identified age, hs-CRP risk group, hypertension, diabetes, hyperlipidemia, coronary artery disease, peripheral artery disease, cerebrovascular disease log(NT-proBNP) and creatinine as significant predictors for the primary study outcome. In multivariable analysis coronary artery disease and age were found to be highly significant predictors for the occurrence of an composite event during follow-up, while patients categorized in the low- and medium-risk groups appeared to predict a lower likelihood for events (Table 1).
Conclusions
Cardiovascular events were more likely to occur in patients who were older, with hs-CRP >3 mg/L and a history of coronary artery disease. However, assessment of inflammation markers alone may play a secondary role compared to other established cardiovascular risk factors, elevated CRP appears helpful to detect higher risk and in prediction of further cardiovascular events and mortality.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- E Han
- Medical University of Vienna, Department of Internal Medicine II, Division of Cardiology , Vienna , Austria
| | - M Fritzer-Szekeres
- Medical University of Vienna, Department of Laboratory Medicine , Vienna , Austria
| | - T Szekeres
- Medical University of Vienna, Department of Laboratory Medicine , Vienna , Austria
| | - T Gehrig
- University of Vienna, Faculty of Business, Economics and Statistics , Vienna , Austria
| | - M Gyongyosi
- Medical University of Vienna, Department of Internal Medicine II, Division of Cardiology , Vienna , Austria
| | - J Bergler-Klein
- Medical University of Vienna, Department of Internal Medicine II, Division of Cardiology , Vienna , Austria
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Sandner SE, Donovan TJ, Edelstein S, Puskas JD, Angleitner P, Krasopoulos G, Channon K, Gehrig T, Rajakaruna C, Ladyshenskij L, De Silva R, Bonaros N, Bolotin G, Jacobs S, Thielmann M, Choi YH, Ohri S, Lipey A, Friedrich I, Taggart DP. Effects of the harvesting technique and external stenting on progression of vein graft disease 2 years after coronary artery bypass. Eur J Cardiothorac Surg 2022; 62:ezac045. [PMID: 35312782 DOI: 10.1093/ejcts/ezac045] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 01/16/2022] [Accepted: 01/25/2022] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVES In a post hoc analysis of the VEST III trial, we investigated the effect of the harvesting technique on saphenous vein graft (SVG) patency and disease progression after coronary artery bypass grafting. METHODS Angiographic outcomes were assessed in 183 patients undergoing open (126 patients, 252 SVG) or endoscopic harvesting (57 patients, 114 SVG). Overall SVG patency was assessed by computed tomography angiography at 6 months and by coronary angiography at 2 years. Fitzgibbon patency (FP I, II and III) and intimal hyperplasia (IH) in a patient subset were assessed by coronary angiography and intravascular ultrasound, respectively, at 2 years. RESULTS Baseline characteristics were similar between patients who underwent open and those who underwent endoscopic harvesting. Open compared with endoscopic harvesting was associated with higher overall SVG patency rates at 6 months (92.9% vs 80.4%, P = 0.04) and 2 years (90.8% vs 73.9%, P = 0.01), improved FP I, II and III rates (65.2% vs 49.2%; 25.3% vs 45.9%, and 9.5% vs 4.9%, respectively; odds ratio 2.81, P = 0.09) and reduced IH area (-31.8%; P = 0.04) and thickness (-28.9%; P = 0.04). External stenting was associated with improved FP I, II and III rates (odds ratio 2.84, P = 0.01), reduced IH area (-19.5%; P < 0.001) and thickness (-25.0%; P < 0.001) in the open-harvest group and reduced IH area (-12.7%; P = 0.01) and thickness (-9.5%; P = 0.21) in the endoscopic-harvest group. CONCLUSIONS A post-hoc analysis of the VEST III trial showed that open harvesting is associated with improved overall SVG patency and reduced IH. External stenting reduces SVG disease progression, particularly with open harvesting.
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Affiliation(s)
- Sigrid E Sandner
- Department of Cardiac Surgery, Medical University of Vienna, Austria
| | | | | | - John D Puskas
- Department of Cardiovascular Surgery, Mount Sinai Morningside, New York, USA
| | | | - George Krasopoulos
- Department of Cardiac Surgery, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Keith Channon
- Department of Cardiovascular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Thomas Gehrig
- Herzzentrum Trier, Krankenhaus der Barmherzigen Bruder, Trier, Germany
| | - Cha Rajakaruna
- Department of Cardiothoracic Surgery, University Hospitals Bristol, UK
| | - Leonid Ladyshenskij
- Department of Cardiothoracic Surgery, Immanuel Klinikum Bernau, Herzzentrum Brandenburg, Germany
| | - Ravi De Silva
- Department of Cardiothoracic Surgery, Papworth Hospital, Cambridge, UK
| | - Nikolaos Bonaros
- Department of Cardiac Surgery, Medical University of Innsbruck, Austria
| | - Gil Bolotin
- Department of Cardiothoracic Surgery, Rambam Medical Center, Israel
| | - Stephan Jacobs
- Department of Cardiothoracic Surgery, German Heart Centre Berlin, Germany
| | - Matthias Thielmann
- Department of Cardiothoracic Surgery, West-German Heart and Vascular Center Essen, University Hospital Essen, Germany
| | - Yeong-Hoon Choi
- Kerkhoff-Klinik Bad Nauheim, Campus Kerkhoff, Justus-Liebig-University Gießen, Bad Nauheim, Germany
| | - Sunil Ohri
- Department of Cardiothoracic Surgery, University Hospital Southampton, UK
| | - Alexander Lipey
- Department of Cardiothoracic Surgery, Sheba Medical Center, Israel
| | - Ivar Friedrich
- Herzzentrum Trier, Krankenhaus der Barmherzigen Bruder, Trier, Germany
| | - David P Taggart
- Department of Cardiac Surgery, University of Oxford, John Radcliffe Hospital, Oxford, UK
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Buyl T, Gehrig T, Schreyögg J, Wieland A. Resilience: A Critical Appraisal of the State of Research for Business and Society. Schmalenbach Z Betriebswirtsch Forsch 2022; 74:453-463. [PMID: 36567896 PMCID: PMC9761626 DOI: 10.1007/s41471-022-00151-x] [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] [Subscribe] [Scholar Register] [Accepted: 11/08/2022] [Indexed: 12/23/2022]
Affiliation(s)
- Tine Buyl
- Tilburg U., Tilburg, The Netherlands
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Taggart DP, Gavrilov Y, Krasopoulos G, Rajakaruna C, Zacharias J, De Silva R, Channon KM, Gehrig T, Donovan TJ, Friedrich I. External stenting and disease progression in saphenous vein grafts two years after coronary artery bypass grafting: A multicenter randomized trial. J Thorac Cardiovasc Surg 2021; 164:1532-1541.e2. [PMID: 34024615 DOI: 10.1016/j.jtcvs.2021.03.120] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [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] [Received: 11/09/2020] [Revised: 03/28/2021] [Accepted: 03/29/2021] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Little data exist regarding the potential of external stents to mitigate long-term disease progression in saphenous vein grafts. We investigated the effect of external stents on the progression of saphenous vein graft disease. METHODS A total of 184 patients undergoing isolated coronary artery bypass grafting, using an internal thoracic artery graft and at least 2 additional saphenous vein grafts, were enrolled in 14 European centers. One saphenous vein graft was randomized to an external stent, and 1 nonstented saphenous vein graft served as the control. The primary end point was the saphenous vein graft Fitzgibbon patency scale assessed by angiography, and the secondary end point was saphenous vein graft intimal hyperplasia assessed by intravascular ultrasound in a prespecified subgroup at 2 years. RESULTS Angiography was completed in 128 patients and intravascular ultrasound in the entire prespecified cohort (n = 51) at 2 years. Overall patency rates were similar between stented and nonstented saphenous vein grafts (78.3% vs 82.2%, P = .43). However, the Fitzgibbon patency scale was significantly improved in stented versus nonstented saphenous vein grafts, with Fitzgibbon patency scale I, II, and III rates of 66.7% versus 54.9%, 27.8% versus 34.3%, and 5.5% versus 10.8%, respectively (odds ratio, 2.02; P = .03). Fitzgibbon patency scale was inversely related to saphenous vein graft minimal lumen diameter, with Fitzgibbon patency scale I, II, and III saphenous vein grafts having an average minimal lumen diameter of 2.62 mm, 1.98 mm, and 1.32 mm, respectively (P < .05). Externally stented saphenous vein grafts also showed significant reductions in mean intimal hyperplasia area (22.5%; P < .001) and thickness (23.5%; P < .001). CONCLUSIONS Two years after coronary artery bypass grafting, external stenting improves Fitzgibbon patency scales of saphenous vein grafts and significantly reduces intimal hyperplasia area and thickness. Whether this will eventually lead to improved long-term patency is still unknown.
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Affiliation(s)
- David P Taggart
- Nuffield Department of Surgical Sciences, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | | | - George Krasopoulos
- Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Cha Rajakaruna
- Department of Cardiothoracic Surgery, University Hospitals Bristol, Bristol, United Kingdom
| | - Joseph Zacharias
- Department of Cardiothoracic Surgery, Blackpool Victoria Hospital, Blackpool, United Kingdom
| | - Ravi De Silva
- Department of Cardiothoracic Surgery, Papworth Hospital, Cambridge, United Kingdom
| | - Keith M Channon
- Department of Cardiovascular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Thomas Gehrig
- Herzzentrum Trier, Krankenhaus der Barmherzigen Bruder, Trier, Germany
| | | | - Ivar Friedrich
- Herzzentrum Trier, Krankenhaus der Barmherzigen Bruder, Trier, Germany.
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Müller-Stich BP, Senft JD, Lasitschka F, Shevchenko M, Billeter AT, Bruckner T, Kenngott HG, Fischer L, Gehrig T. Polypropylene, polyester or polytetrafluoroethylene-is there an ideal material for mesh augmentation at the esophageal hiatus? Results from an experimental study in a porcine model. Hernia 2014; 18:873-81. [PMID: 25159558 DOI: 10.1007/s10029-014-1305-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 08/14/2014] [Indexed: 02/02/2023]
Abstract
PURPOSE Knowledge about the influence of underlying biomaterial on behavior of surgical meshes at the esophageal hiatus is rare, but essential for safe and effective hiatal hernia surgery. This study aimed to characterize the influence of polymer material on mesh behavior at the hiatus. METHODS 24 pigs in three groups of eight underwent implantation of either polypropylene (PP), polyester (PET) or polytetrafluoroethylene (PTFE) mesh placed circularly at the esophageal hiatus. After 8 weeks, necropsy and measurements were performed evaluating mesh deformation, adhesion formation, fixation of the esophagogastric junction and mesh position. Foreign body reaction was assessed by mononuclear cell count and immunostaining of Ki-67. Tissue integration was evaluated by immunostaining of type I and type III collagen fibers. RESULTS Mesh shrinkage was the highest for PTFE, lower for PP and the lowest for PET (34.9 vs. 19.8 vs. 12.1 %; p = 0.002). Mesh aperture for the esophagus showed an enlargement within all groups, which was highest for PTFE compared to PP and PET (100.8 vs. 47.0 vs. 35.9 %; p = 0.001). The adhesion score was highest for PP, lower for PTFE and the lowest for PET (11.0 vs. 9.5 vs. 5.0; p = 0.001) and correlated positively with the score of esophagogastric fixation (r s = 0.784, p < 0.001). No mesh migration, erosion or stenosis of the esophagus occurred. Evaluation of foreign body reaction and tissue integration showed no significant differences. CONCLUSIONS In this experimental setting, PP-meshes showed the most appropriate characteristics for augmentation at the hiatus. Due to solid fixation of the esophagogastric junction and low shrinkage tendency, PP-meshes may be effective in preventing hiatal hernia recurrence. The use of PTFE-mesh at the hiatus may be disadvantageous due to high shrinkage rates and correlating enlargement of the aperture for the esophagus.
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Affiliation(s)
- B P Müller-Stich
- Department of General, Abdominal and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany,
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Halapas A, Lausberg H, Gehrig T, Friedrich I, Hauptmann KE. Giant right coronary artery aneurysm in an adult male patient with non-ST myocardial infarction. Hellenic J Cardiol 2013; 54:69-76. [PMID: 23340133] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
The combination of a giant coronary aneurysm with multiple coronary aneurysms in adults is an extremely rare entity--especially in atherosclerotic patients, since it is most commonly associated with Kawasaki disease in children. We report an interesting case of a 59-year-old male patient with multiple atherosclerotic aneurysms of the left coronary system and a giant aneurysm of the right coronary artery. The patient was admitted to our hospital because of a non-ST myocardial infarction. Diagnosis was established by echocardiography, computed tomography angiogram, and coronary angiography. In view of the clinical symptoms and the extent of the giant right coronary aneurysm, with the associated risk of rupture, the patient was successfully treated with urgent surgical intervention. We also present a review of the current literature on this anomaly and a statistical analysis of all atherosclerotic giant coronary artery aneurysms previously reported.
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Affiliation(s)
- Antonios Halapas
- Division of Cardiology, Hospital of the Brothers of Mercy, Trier, Germany
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Sommer C, Kortes N, Mogler C, Bellemann N, Holzschuh M, Arnegger F, Nickel F, Gehrig T, Zelzer S, Meinzer H, Longerich T, Stampfl U, Kauczor H, Radeleff B. Super-micro-bland particle embolization combined with RF-ablation: Angiographic, macroscopic and microscopic features in porcine kidneys. Eur J Radiol 2012; 81:1165-72. [DOI: 10.1016/j.ejrad.2011.03.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Accepted: 03/04/2011] [Indexed: 12/22/2022]
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Kenngott HG, Wegner I, Neuhaus J, Nickel F, Fischer L, Gehrig T, Meinzer HP, Müller-Stich BP. Magnetic tracking in the operation room using the da Vinci(®) telemanipulator is feasible. J Robot Surg 2012; 7:59-64. [PMID: 23440620 PMCID: PMC3574972 DOI: 10.1007/s11701-012-0347-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [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: 11/18/2011] [Accepted: 02/21/2012] [Indexed: 01/30/2023]
Abstract
In recent years, robotic assistance for surgical procedures has grown on a worldwide scale, particularly for use in more complex operations. Such operations usually require meticulous handling of tissue, involve a narrow working space and limit the surgeon’s sense of orientation in the human body. Improvement in both tissue handling and working within a narrow working space might be achieved through the use of robotic assistance. Soft tissue navigation might improve orientation by visualizing important target and risk structures intraoperatively, thereby possibly improving patient outcome. Prerequisites for navigation are its integration into the surgical workflow and accurate localization of both the instruments and patient. Magnetic tracking allows for good integration but is susceptible to distortion through metal or electro-magnetic interference, which may be caused by the operation table or a robotic system. We have investigated whether magnetic tracking can be used in combination with the da Vinci® (DV) telemanipulator in terms of stability and precision. We used a common magnetic tracking system (Aurora®, NDI Inc.) with the DV in a typical operation setup. Magnetic field distortion was evaluated using a measuring facility, with the following reference system: without any metal (R), operation table alone (T), DV in standby (D) and DV in motion (Dm). The maximum error of the entire tracking volume for R, T, D and Dm was 9.9, 32.8, 37.9 and 37.2 mm, respectively. Limiting the tracking volume to 190 mm (from cranial to caudal) resulted in a maximum error of 4.0, 8.3, 8.5 and 8.9 mm, respectively. When used in the operation room, magnetic tracking shows high errors, mainly due to the operation table. The target area should be limited to increase accuracy, which is possible for most surgical applications. The use of the da Vinci® telemanipulator only slightly aggravates the distortion and can thus be used in combination with magnetic tracking systems.
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Affiliation(s)
- H G Kenngott
- Department of Abdominal Visceral and Transplant Surgery, Heidelberg University, Im Neuenheimer Feld 110, 69120 Heidelberg, Germany
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Sommer CM, Koch V, Holzschuh M, Bellemann N, Gehrig T, Arnegger FU, Mogler C, Zelzer S, Stampfl U, Kauczor HU, Radeleff B. Mikrowellen-Ablation in einem in-vivo Nierenmodell beim Schwein: Beurteilung des Effekts einer Perfusionsblockade auf die Ablationsmorphologie. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279098] [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: 10/18/2022]
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Sommer CM, Schwarzwaelder CB, Ramsauer S, Stampfl U, Stiller W, Nickel F, Omri W, Kenngott HG, Gehrig T, Meinzer HP, Kauczor HU, Radeleff BA. Intravenous 64-multi-detector row CT-cholangiography of porcine livers: a feasibility study with definition of the temporal window for optimal bile duct delineation. J Hepatobiliary Pancreat Sci 2010; 17:666-72. [PMID: 20703845 DOI: 10.1007/s00534-010-0263-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2009] [Accepted: 01/06/2010] [Indexed: 10/19/2022]
Abstract
BACKGROUND/PURPOSE To assess the feasibility of intravenous 64-multi-detector row computed tomography (CT)-cholangiography of porcine livers with definition of the temporal window for optimal bile duct delineation. METHODS Six healthy Landrace pigs, each weighing 28.97 +/- 2.99 kg, underwent 64-multi-detector row CT-cholangiography. Each pig was infused with 50 ml of meglumine iotroxate continuously over a period of 20 min and, starting with the initiation of the infusion, 18 consecutive CT scans of the abdomen at 2-min intervals were acquired. All series were evaluated for bile duct visualization scores and maximum bile duct diameters as primary study goals and bile duct attenuation and liver enhancement as secondary study goals. RESULTS Of the 16 analyzed biliary tract segments, maximum bile duct visualization scores ranged between 4.00 +/- 0.00 and 2.83 +/- 1.47. Time to maximum bile duct visualization scores ranged between 10 and 34 min. Average bile duct visualization scores for the 10- to 34-min interval ranged between 3.99 +/- 0.05 and 2.78 +/- 0.10. Maximum bile duct diameters ranged between 6.47 +/- 1.05 and 2.65 +/- 2.23 mm. Time to maximum bile duct diameters ranged between 24 and 34 min. Average bile duct diameters for the 10- to 34-min interval ranged between 6.00 +/- 0.38 and 2.40 +/- 0.13 mm. CONCLUSIONS Intravenous 64-multi-detector row CT-cholangiography of non-diseased porcine liver is feasible, with the best bile duct delineation acquired between 10 and 34 min after initiation of the contrast agent infusion.
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Affiliation(s)
- Christof M Sommer
- Department of Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany.
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Sommer C, Schwarzwaelder C, Bellemann N, Stampfl U, Stiller W, Schindera S, Omri W, Nickel F, Gehrig T, Kenngott H, Richter G, Meinzer H, Kauczor H, Radeleff B. Effect of Intravenous Morphine Comedication on Bile Duct Visualization, Diameter and Volume Applying Intravenous CT Cholangiography in a Porcine Liver Model. Eur Surg Res 2010; 45:26-33. [DOI: 10.1159/000318163] [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] [Subscribe] [Scholar Register] [Received: 10/12/2009] [Accepted: 06/29/2010] [Indexed: 11/19/2022]
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Glower DD, Bashore TM, Harrison JK, Wang A, Gehrig T, Rankin JS. Pure annular dilation as a cause of mitral regurgitation: a clinically distinct entity of female heart disease. J Heart Valve Dis 2009; 18:284-288. [PMID: 19557984] [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] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
BACKGROUND AND AIM OF THE STUDY Pure annular dilation (PAD) is a recognized etiology of mitral regurgitation, yet few data exist to define the prognostic profile of this disorder relative to other etiologies, such as ischemia or myxomatous prolapse. METHODS A total of 535 patients undergoing mitral repair at two institutions between 1993 and 2002 was retrospectively reviewed. PAD was defined as requiring only ring annuloplasty +/- cleft repair, without evidence of prolapse, regional wall motion abnormality, or infarction. RESULTS PAD was identified in 74 patients, while alternative etiologies were myxomatous prolapse (n = 290), ischemia (n = 141), and 'other' (n = 30). PAD patients were more often female (78%) than male (38%) (p < 0.001), more often hypertensive (37% versus 26%; p = 0.003), and had a left ventricular ejection fraction (LVEF) that was lower (0.41 +/- 0.12) than those in patients with prolapse (0.51 +/- 0.11; p < 0.01) but similar to values in ischemic patients (0.38 +/- 0.10). The valve size was smaller for PAD versus prolapse (ring size 24-26 mm in 71% versus 12%; p < 0.001). The unadjusted PAD prognosis was intermediate, with five-year survival being 70 +/- 8%, compared to 87 +/- 3% for prolapse and 56 +/- 5% for ischemia (p < 0.01). Survival adjusted for differences in baseline characteristics was not different among the three groups (p > 0.10). CONCLUSION PAD is a clinically distinct etiology of mitral regurgitation associated with female gender, small valve size, a lower LVEF, and hypertension. Early, more aggressive hypertension control might improve or minimize the consequences of this predominantly female cardiac disorder.
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Liang Y, Zhu H, Gehrig T, Friedman MH. Measurement of the transverse strain tensor in the coronary arterial wall from clinical intravascular ultrasound images. J Biomech 2008; 41:2906-11. [PMID: 18804766 DOI: 10.1016/j.jbiomech.2008.08.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2007] [Revised: 06/20/2008] [Accepted: 08/01/2008] [Indexed: 10/21/2022]
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Rauterberg EW, Gehrig T, Lieberknecht M. C5-9 neoantigen detection indicates a complete complement activation in various types of glomerulonephritis. Mol Immunol 1982. [DOI: 10.1016/0161-5890(82)90137-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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