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Sarantides P, Raptis A, Mathioulakis D, Moulakakis K, Kakisis J, Manopoulos C. Computational Study of Abdominal Aortic Aneurysm Walls Accounting for Patient-Specific Non-Uniform Intraluminal Thrombus Thickness and Distinct Material Models: A Pre- and Post-Rupture Case. Bioengineering (Basel) 2024; 11:144. [PMID: 38391630 PMCID: PMC10886172 DOI: 10.3390/bioengineering11020144] [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: 11/30/2023] [Revised: 01/23/2024] [Accepted: 01/26/2024] [Indexed: 02/24/2024] Open
Abstract
An intraluminal thrombus (ILT) is present in the majority of abdominal aortic aneurysms, playing a crucial role in their growth and rupture. Although most computational studies do not include the ILT, in the present study, this is taken into account, laying out the whole simulation procedure, namely, from computed tomography scans to medical image segmentation, geometry reconstruction, mesh generation, biomaterial modeling, finite element analysis, and post-processing, all carried out in open software. By processing the tomography scans of a patient's aneurysm before and after rupture, digital twins are reconstructed assuming a uniform aortic wall thickness. The ILT and the aortic wall are assigned different biomaterial models; namely, the first is modeled as an isotropic linear elastic material, and the second is modeled as the Mooney-Rivlin hyperelastic material as well as the transversely isotropic hyperelastic Holzapfel-Gasser-Ogden nonlinear material. The implementation of the latter requires the designation of local Cartesian coordinate systems in the aortic wall, suitably oriented in space, for the proper orientation of the collagen fibers. The composite aneurysm geometries (ILT and aortic wall structures) are loaded with normal and hypertensive static intraluminal pressure. Based on the calculated stress and strain distributions, ILT seems to be protecting the aneurysm from a structural point of view, as the highest stresses appear in the thrombus-free areas of the aneurysmal wall.
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Affiliation(s)
- Platon Sarantides
- Laboratory of Biofluid Mechanics & Biomedical Technology, School of Mechanical Engineering, National Technical University of Athens, 157 72 Zografos, Greece
| | - Anastasios Raptis
- Laboratory of Biofluid Mechanics & Biomedical Technology, School of Mechanical Engineering, National Technical University of Athens, 157 72 Zografos, Greece
| | - Dimitrios Mathioulakis
- Laboratory of Biofluid Mechanics & Biomedical Technology, School of Mechanical Engineering, National Technical University of Athens, 157 72 Zografos, Greece
- School of Engineering, Bahrain Polytechnic, Isa Town P.O. Box 33349, Bahrain
| | - Konstantinos Moulakakis
- Department of Vascular Surgery, School of Medicine, University of Patras, 265 04 Patras, Greece
| | - John Kakisis
- Department of Vascular Surgery, Attikon University Hospital, National and Kapodistrian University of Athens, 106 79 Athens, Greece
| | - Christos Manopoulos
- Laboratory of Biofluid Mechanics & Biomedical Technology, School of Mechanical Engineering, National Technical University of Athens, 157 72 Zografos, Greece
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Kadoglou N, Moulakakis KG, Mantas G, Spathis A, Gkougkoudi E, Mylonas SN, Kakisis J, Liapis C. Novel Biomarkers and Imaging Indices for the "Vulnerable Patient" with Carotid Stenosis: A Single-Center Study. Biomolecules 2023; 13:1427. [PMID: 37759829 PMCID: PMC10526466 DOI: 10.3390/biom13091427] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/07/2023] [Accepted: 09/09/2023] [Indexed: 09/29/2023] Open
Abstract
BACKGROUND We investigated the relationship of matrix metalloproteinases (MMPs), cardio-ankle vascular index (CAVI), and Gray-Scale Median (GSM) score with the severity and vulnerability of carotid atherosclerosis and major adverse cardiovascular events (MACE) during follow-up of carotid artery revascularization. METHODS We enrolled 262 patients undergoing carotid revascularization therapy (GRT), 109 asymptomatic patients with low-grade carotid stenosis (40-70%) receiving conservative treatment (GCT), and 92 age- and sex-matched control subjects without carotid atherosclerosis (GCO). All participants underwent carotid ultrasound and we assessed at baseline clinical parameters, metabolic profile, CAVI, GSM, and circulating levels of hsCRP, MMP-3,-7,-9, and TIMP-1. RESULTS Both GRT and GCT presented with elevated CAVI, MMPs, and TIMP-1 levels compared to GCO (p < 0.001). The escalation highly correlated to the presence of symptoms or paralleled the degree of carotid stenosis (p < 0.001). During follow-up (mean duration: 55 months), 51 GRT patients experienced MACE unrelated to the revascularization procedure. Within GRT, diabetes (HR: 2.07; CI: 1.55-2.78, p < 0.001), smoking (HR: 1.67; CI: 1.35-1.95, p < 0.001), high CAVI (HR: 1.22; CI: 1.09-1.43, p = 0.023) and MMP-9 (HR: 1.44; CI: 1.29-2.15, p = 0.005), and low GSM (HR: 1.40; CI: 1.16-2.12, p = 0.002) independently predicted MACE occurrences, despite the optimum medical therapy. CONCLUSIONS Novel imaging and biochemical biomarkers were positively associated with atherosclerosis severity, while CAVI, MMP-9, and low GSM showed a positive, independent relationship with MACE after carotid revascularization, describing "vulnerable patients".
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Affiliation(s)
| | - Konstantinos G. Moulakakis
- Vascular Surgery Department, Patras University Hospital, University of Patras, Rio, 265 04 Patra, Greece;
| | - George Mantas
- Department of Vascular Surgery, Medical School, National and Kapodistrian University of Athens, Attikon University Hospital, 115 27 Athens, Greece; (G.M.); (J.K.); (C.L.)
| | - Aris Spathis
- 2nd Department of Pathology, National and Kapodistrian University of Athens, 115 27 Athens, Greece;
| | | | - Spyridon N. Mylonas
- Department of Vascular and Endovascular Surgery, University Hospital of Cologne, 50937 Cologne, Germany;
| | - John Kakisis
- Department of Vascular Surgery, Medical School, National and Kapodistrian University of Athens, Attikon University Hospital, 115 27 Athens, Greece; (G.M.); (J.K.); (C.L.)
| | - Christos Liapis
- Department of Vascular Surgery, Medical School, National and Kapodistrian University of Athens, Attikon University Hospital, 115 27 Athens, Greece; (G.M.); (J.K.); (C.L.)
- Department of Vascular and Endovascular Surgery, Athens Medical Center, 106 73 Athens, Greece
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Kontopodis N, Gavalaki A, Galanakis N, Kantzas M, Ioannou C, Geroulakos G, Kakisis J, Antoniou GA. Systematic Review With Meta-Analysis of Endovascular Versus Open Repair of Abdominal Aortic Aneurysm Repair in the Young. J Endovasc Ther 2023:15266028231179419. [PMID: 37350089 DOI: 10.1177/15266028231179419] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2023]
Abstract
PURPOSE The purpose of this study was to investigate which treatment method for abdominal aortic aneurysm (AAA), endovascular or open repair, has better outcomes in young patients. MATERIALS AND METHODS A systematic review was conducted to identify observational studies or randomized controlled trials (RCTs) that compared endovascular and open repair of intact AAA in young patients. MEDLINE, EMBASE, and CENTRAL were searched up to March 2022 using the Ovid interface. The risk of bias was assessed with the Newcastle-Ottawa scale (NOS), with a maximum score of 9, or version 2 of the Cochrane risk of bias tool. The certainty of evidence was assessed with the GRADE framework. Primary outcomes were perioperative, overall, and aneurysm-related mortality. Secondary outcomes were reintervention, hospital length of stay, and perioperative complications. Effect measures in syntheses were the odds ratio (OR), risk difference (RD), mean difference (MD), or hazard ratio (HR) and were calculated with the Mantel-Haenszel or inverse variance statistical method and random-effects models. RESULTS Fifteen observational studies and 1 RCT were included, reporting a total of 48 976 young patients. Definitions of young ranged from 60 to 70 years. The median score on the NOS was 8 (range: 4-9), and the RCT was judged to be high risk of bias. The perioperative mortality was lower after EVAR (RD: -0.01, 95% CI: -0.02 to -0.00), but the overall and aneurysm-related mortality was not significantly different between EVAR and open repair (HR: 1.38, 95% CI: 0.81 to 2.33; HR: 4.68, 95% CI: 0.71 to 31.04, respectively), as was the hazard of reintervention (HR: 1.50, 95% CI: 0.88 to 2.56). The hospital length of stay was shorter after EVAR (MD: -4.44 days, 95% CI: -4.79 to -4.09), and the odds of cardiac (OR: 0.22, 95% CI: 0.13 to 0.35), respiratory (OR: 0.17, 95% CI: 0.11 to 0.26), and bleeding complications were lower after EVAR (OR: 0.26, 95% CI: 0.11 to 0.64). The level of evidence was low or very low. CONCLUSION Patient preferences and perspectives should be considered during shared decision-making process considering the available evidence. EVAR may be considered in young and fit patients with a suitable anatomy. PROTOCOL REGISTRATION PROSPERO, CRD42022325051. CLINICAL IMPACT Uncertainty surrounds the optimal treatment strategy for abdominal aortic aneurysm in young patients. Meta-analysis of some 48,976 young patients showed that endovascular aneurysm repair (EVAR) has a lower perioperative mortality and morbidity and a shorter hospital and intensive care unit stay than open surgical repair, but the overall and aneurysm-related mortality in the short to medium term are not significantly different between EVAR and open repair. EVAR can be considered in young patients.
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Affiliation(s)
- Nikolaos Kontopodis
- Vascular Surgery Unit, Department of Cardiothoracic and Vascular Surgery, University General Hospital of Heraklion, School of Medicine, University of Crete, Heraklion, Greece
| | - Aikaterini Gavalaki
- Thoracic Surgery Unit, Department of Cardiothoracic and Vascular Surgery, University General Hospital of Heraklion, School of Medicine, University of Crete, Heraklion, Greece
| | - Nikolaos Galanakis
- Interventional Radiology Unit, Department of Medical Imaging, University General Hospital of Heraklion, School of Medicine, University of Crete, Heraklion, Greece
| | - Michalis Kantzas
- Vascular Surgery Unit, Department of Cardiothoracic and Vascular Surgery, University General Hospital of Heraklion, School of Medicine, University of Crete, Heraklion, Greece
| | - Christos Ioannou
- Vascular Surgery Unit, Department of Cardiothoracic and Vascular Surgery, University General Hospital of Heraklion, School of Medicine, University of Crete, Heraklion, Greece
| | - George Geroulakos
- Department of Vascular Surgery, Attikon University Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - John Kakisis
- Department of Vascular Surgery, Attikon University Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - George A Antoniou
- Department of Vascular and Endovascular Surgery, Manchester University NHS Foundation Trust, Manchester, UK
- Division of Cardiovascular Sciences, School of Medical Sciences, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
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Mansilha A, Viddal B, Krievins D, McLain D, Petkov D, Adili F, DE Borst G, Oszkinis G, Fourneau I, Cvjetko I, Kakisis J, Maeso J, Scott J, Tijunaitis K, Cassar K, Velicka L, Gasparini M, Widmer M, Gargiulo M, Ionac M, Chakfé N, Staffa R, Suominen V, Szeberin Z. European training requirements in vascular surgery. INT ANGIOL 2022; 41:91-104. [PMID: 35138075 DOI: 10.23736/s0392-9590.22.04841-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Armando Mansilha
- UEMS Section and Board of Vascular Surgery, Faculty of Medicine, University of Porto, Porto, Portugal -
| | - Beate Viddal
- UEMS Section and Board of Vascular Surgery, Norway
| | | | | | | | - Farzin Adili
- UEMS Section and Board of Vascular Surgery, Germany
| | - Gert DE Borst
- UEMS Section and Board of Vascular Surgery, the Netherlands
| | | | | | - Ivan Cvjetko
- UEMS Section and Board of Vascular Surgery, Croatia
| | - John Kakisis
- UEMS Section and Board of Vascular Surgery, Greece
| | - Jordi Maeso
- UEMS Section and Board of Vascular Surgery, Spain
| | | | | | - Kevin Cassar
- UEMS Section and Board of Vascular Surgery, Malta
| | - Linas Velicka
- UEMS Section and Board of Vascular Surgery, Lithuania
| | | | | | | | - Mihai Ionac
- UEMS Section and Board of Vascular Surgery, Romania
| | - Nabil Chakfé
- UEMS Section and Board of Vascular Surgery, France
| | - Robert Staffa
- UEMS Section and Board of Vascular Surgery, Czech Republic
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Mylonas SN, Moulakakis KG, Kadoglou N, Antonopoulos C, Kotsis TE, Kakisis J, Katsenis K, Liapis C. Arterial Stiffness Assessed by Cardio-Ankle Vascular Index in Patients With Abdominal Aortic Aneurysm and Its Alterations After Treatment. Vasc Endovascular Surg 2021; 55:804-810. [PMID: 34114528 DOI: 10.1177/15385744211023281] [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: 11/17/2022]
Abstract
PURPOSE The aim of the present study was to investigate a potential difference on the arterial stiffness among aneurysm patients and non-aneurysm controls, as well as to explore potential changes between patients treated either with endovascular or open repair. MATERIALS AND METHODS A 110 patients with an infrarenal AAA were prospectively enrolled in this study. Fifty-six patients received an EVAR, whereas 54 patients received an open surgical repair. Moreover, 103 gender and age-matched subjects without AAA served as controls. The cardio-ankle vascular index (CAVI) was applied for measurement of the arterial stiffness. RESULTS CAVI values were statistically higher in the AAA patients when compared with control subjects. Although at 48 hours postoperatively the CAVI values were increased in both groups when compared to baseline values, the difference in CAVI had a tendency to be higher in the open group compared to the endovascular group. At 6 months of follow up the CAVI values returned to the baseline for the patients of the open repair group. However, in the endovascular group CAVI values remained higher when compared with the baseline values. CONCLUSION Patients with AAAs demonstrated a higher value of CAVI compared to healthy controls. A significant increase of arterial stiffness in both groups during the immediate postoperative period was documented. The increase in arterial stiffness remained significant at 6 months in EVAR patients. Further studies are needed to elucidate the impact of a decreased aortic compliance after stentgraft implantation on the cardiac function of patients with AAA.
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Affiliation(s)
- Spyridon N Mylonas
- Department of Vascular and Endovascular Surgery, 61059University of Cologne, Cologne, Germany.,Department of Vascular Surgery, Medical School, 68989University of Athens, Athens, Greece
| | - Konstantinos G Moulakakis
- Department of Vascular Surgery, Medical School, 68989University of Athens, Athens, Greece.,Department of Vascular Surgery, Medical School, 484358University of Patras, Patras, Greece
| | - Nikolaos Kadoglou
- Department of Cardiology, Medical School, 371002University of Cyprus, Nicosia, Cyprus
| | | | - Thomas E Kotsis
- Department of Vascular Surgery, Medical School, 68989University of Athens, Athens, Greece
| | - John Kakisis
- Department of Vascular Surgery, Medical School, 68989University of Athens, Athens, Greece
| | - Konstantinos Katsenis
- Department of Vascular Surgery, Medical School, 68989University of Athens, Athens, Greece
| | - Christos Liapis
- Department of Vascular Surgery, Medical School, 68989University of Athens, Athens, Greece
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Safioleas M, Misiakos EP, Kakisis J, Manti C, Tsinari KK, Neto AB. Splenic Artery Aneursym Rupture. Acta Chir Belg 2020. [DOI: 10.1080/00015458.1999.12098503] [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: 10/23/2022]
Affiliation(s)
- M. Safioleas
- 2nd Department of Propedeutic Surgery, Athens University Medical School, Laiko General Hospital
| | - E. P. Misiakos
- 2nd Department of Propedeutic Surgery, Athens University Medical School, Laiko General Hospital
| | - J. Kakisis
- 2nd Department of Propedeutic Surgery, Athens University Medical School, Laiko General Hospital
| | - C. Manti
- Department of Microbiology, Aglaia Kyriakou Children’s Hospital of Athens
| | - K. K. Tsinari
- Department of Anaesthesiology, Laiko General Hospital, Athens, Greece
| | - A. Bakonyi Neto
- Department of Surgery, Federal University of Sao Paulo, Brazil
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Ikonomidis I, Rafouli-Stergiou P, Katsiki N, Kadoglou N, Vlachos S, Thymis J, Parissis J, Moulakakis K, Kakisis J. Arterial wall stiffness in patients with abdominal aortic aneurysms and concomitant coronary artery disease. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2348] [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: 11/13/2022] Open
Abstract
Abstract
Introduction
Pulse wave velocity (PWV) is a valid, clinically feasible marker of arterial stiffening, and a strong predictor of outcomes. In patients with abdominal aortic aneurysms (AAA) alterations in arterial wall composition and inflammation were proposed as possible contributors to increased arterial stiffness.
Purpose
The present study aimed to compare aortic elastic properties in patients with abdominal aortic aneurysms (AAA), with or without coronary artery disease (CAD), as well as healthy individuals.
Methods
A total of 130 patients with AAA, eligible for interventional repair, and 30 healthy individuals, comprising the control group (HC), were evaluated. Study groups did not differ in anthropometrical characteristics and CV risk factors. Presence of CAD was identified by coronary angiography. Aortic PWV (aPWV) was measured using the Arteriograph method.
Results
aPWV was found considerably higher in AAA patients compared to HC group (11.5±2.9 vs. 7.3±1.6 m/s, p<0.001), after adjustment for age, sex and mean arterial pressure (MAP). Interestingly, among patients with AAA, those with concomitant CAD (n=41) had higher aPWV than those without CAD (12.5±2.9 vs. 11.0±3.0 m/s, p=0.03), after adjustment for age, sex and MAP. In receiver-operator-curve (ROC) analysis, the area under the curve (AUC) of aPWV for the prediction of CAD presence in the AAA study group was 0.72 [95% confidence interval (CI): 0.55–0.84, p=0.03]. According to this, the best cut-off was a value of aPWV above 12.8 m/s (78% sensitivity and 73% specificity). This cut-off was identified as a significant predictor of CAD presence in the AAA study population according to univariate logistic regression analysis (OR=2.51, 95% CI: 1.79–5.19, p=0.02). After adjustment for age, sex, dyslipidemia, smoking and MAP in multivariate logistic regression analysis, the cut-off aPWV level remained independently associated with the presence of CAD (OR=1.64, 95% CI: 1.19–4.08, p=0.03).
Conclusion
The co-existence of CAD and AAA is characterized by a greater arterial stiffness. This finding supports a role of measuring arterial stiffness markers when evaluating AAA patients' cardiovascular risk and selecting endovascular stents with more favorable elastic properties. Further studies are needed to explore whether aPWV values could be used to as a screening tool to detect CAD or to guide treatment in AAA patients.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- I Ikonomidis
- National & Kapodistrian University of Athens, Athens, Greece
| | | | - N Katsiki
- Ahepa General Hospital of Aristotle University, First Department of Internal Medicine, Division of Endocrinology and Metabolism, Diabetes Center, Me, Thessaloniki, Greece
| | - N Kadoglou
- Attikon University Hospital, 2nd Cardiology Department, Athens, Greece
| | - S Vlachos
- Attikon University Hospital, 2nd Cardiology Department, Athens, Greece
| | - J Thymis
- Attikon University Hospital, 2nd Cardiology Department, Athens, Greece
| | - J Parissis
- Attikon University Hospital, 2nd Cardiology Department, Athens, Greece
| | - K Moulakakis
- Attikon University Hospital, Department of Vascular Surgery, Medical School,National and Kapodistrian University of Athens,Greece, Athens, Greece
| | - J Kakisis
- Attikon University Hospital, Department of Vascular Surgery, Medical School,National and Kapodistrian University of Athens,Greece, Athens, Greece
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Bobetsis YA, Kotsikoris I, Liapis CD, Liasis N, Kakisis J, Kourlaba G, Lazari P, Antonopoulos CN, Deliargyris EN, Madianos PN. Association between periodontal disease and vulnerable plaque morphology in patients undergoing carotid endarterectomy. Int J Cardiol Heart Vasc 2020; 30:100601. [PMID: 32802936 PMCID: PMC7419330 DOI: 10.1016/j.ijcha.2020.100601] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 07/10/2020] [Accepted: 07/20/2020] [Indexed: 01/23/2023]
Abstract
Periodontal disease is associated with echolucent plaques. Periodontal disease is associated with increased macrophages in plaques. Periodontal disease is associated with decreased smooth muscle cells in plaques. Periodontal disease is associated with plaque instability.
Background Periodontal disease (PD) is a chronic inflammatory oral condition with potentially important systemic sequelae. We sought to determine whether the presence of PD in patients with severe carotid disease was associated with morphological features consistent with carotid plaque instability. Methods A total of 52 dentate patients hospitalized for carotid endarterectomy (CEA) had standardized assessments of their periodontal status, including measurements of probing pocket depth (PPD), clinical attachment level (CAL) and bleeding on probing (BoP). Carotid plaque morphology was assessed by ultrasound using the gray scale median (GSM) score and by immunohistochemistry using anti-CD68 and anti-alpha-actin antibodies, markers for macrophages and smooth muscle cells (SMCs) respectively. Results In total 30/52 patients (58%) had PD. Significant associations were noted between low GSM on ultrasound and each mm in PPD (p = 0.001), each mm in CAL (p = 0.002) and with a 10% increase in BoP (p = 0.009). Using the standardized PERIO definition the association remained robust (aOR = 10.4 [95% CI:2.3–46.3], p = .002). Significant associations were also observed with high macrophage accumulation and each individual PD measure (p < 0.01 for PPD, CAL and BoP) and with the PERIO definition (aOR = 15 [95% CI:1.8–127.8], p = .01). Similarly, low SMC density was also significantly associated with individual measures of PD (p < 0.05 for PPD, CAL and BoP), but not with the PERIO definition (aOR 3.4 [95% CI:0.9–12.8], p = .07). Conclusions The presence of PD was significantly associated with both ultrasound and immunohistochemistry features of carotid plaque instability in patients undergoing CEA.
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Affiliation(s)
- Yiorgos A Bobetsis
- Dept of Periodontology, School of Dentistry, National and Kapodistrian University of Athens, Greece
| | | | - Christos D Liapis
- Dept of Vascular Surgery, Medical School, National and Kapodistrian University of Athens, Greece.,Vascular & Endovascular Clinic, Athens Medical Center, Athens, Greece
| | - Nikolaos Liasis
- Dept of Vascular Diagnosis, Euromedic Greece, Athens, Greece
| | - John Kakisis
- Dept of Vascular Surgery, Medical School, National and Kapodistrian University of Athens, Greece
| | - Georgia Kourlaba
- 1 and 2 Dept of Pediatrics, Medical School, National and Kapodistrian University of Athens, Greece
| | - Paraskevi Lazari
- Dept of Pathology, Nikaia General Hospital, Piraeus, Greece.,Dept of Pathology, West Attica General Hospital, Athens, Greece
| | | | | | - Phoebus N Madianos
- Dept of Periodontology, School of Dentistry, National and Kapodistrian University of Athens, Greece
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Moulakakis KG, Ikonomidis I, Manopoulos C, Kakisis J. Changes in aortic stiffness and the hemodynamics following endovascular repair of the thoracic aorta of patients with blunt thoracic aortic injury. VASA 2020; 49:253-255. [PMID: 32578518 DOI: 10.1024/0301-1526/a000863] [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: 11/19/2022]
Affiliation(s)
| | - Ignatios Ikonomidis
- 2nd Department of Cardiology, "Attikon" University Hospital, National and Kapodistrian University of Athens, Greece
| | - Christos Manopoulos
- Biofluid Mechanics and Biomedical Engineering Laboratory, Fluids Section, School of Mechanical Engineering, National Technical University of Athens, Greece
| | - John Kakisis
- Department of Vascular Surgery, Attikon University Hospital, Athens, National and Kapodistrian University οf Athens, Greece
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10
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Moulakakis KG, Kakisis J, Gonidaki E, Lazaris AM, Tsangaris S, Geroulakos G, Manopoulos C. Comparison of Fluid Dynamics Variations Between Chimney and Fenestrated Endografts for Pararenal Aneurysms Repair: A Patient Specific Computational Study as Motivation for Clinical Decision-Making. Vasc Endovascular Surg 2019; 53:572-582. [PMID: 31382837 DOI: 10.1177/1538574419867531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 11/16/2022]
Abstract
BACKGROUND-AIM Limited data exist concerning the fluid dynamic changes induced by endovascular aortic repair with fenestrated and chimney graft modalities in pararenal aneurysms. We aimed to investigate and compare the wall shear stress (WSS) and flow dynamics for the branch vessels before and after endovascular aortic repair with fenestrated and chimney techniques. METHODS Modeling was done for patient specific pararenal aortic aneurysms employing fenestrated and chimney grafts (Materialise Mimics 10.0) before and after the endovascular procedure, using computed tomography scans of patients. Surface and spatial grids were created using the ANSYS CFD meshing software 2019 R2. Assessment of blood flow, streamlines, and WSS before and after aneurysm repair was performed. RESULTS The endovascular repair with chimney grafts leaded to a 43% to 53% reduction in perfusion in renal arteries. In fenestrated reconstruction, we observed a 15% reduced perfusion in both renal arteries. In both cases, we observed a decrease in the recirculation phenomena of the aorta after endovascular repair. Concerning the grafts of the renal arteries, we observed in both the transverse and longitudinal axes low WSS regions with simultaneous recirculation of the flow 1 cm distal to the ostium sites in both aortic graft models. High WSS regions appeared in the sites of ostium. CONCLUSIONS We observed reduced renal perfusion in chimney grafts compared to fenestrated grafts, probably caused by the long and kinked characteristics of these devices.
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Affiliation(s)
- Konstantinos G Moulakakis
- 1 Department of Vascular Surgery, Medical School, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
| | - John Kakisis
- 1 Department of Vascular Surgery, Medical School, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
| | - Eleni Gonidaki
- 2 Biofluid Mechanics and Biomedical Engineering Laboratory, Fluids Section, School of Mechanical Engineering, National Technical University of Athens, Greece
| | - Andreas M Lazaris
- 1 Department of Vascular Surgery, Medical School, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
| | - Sokrates Tsangaris
- 2 Biofluid Mechanics and Biomedical Engineering Laboratory, Fluids Section, School of Mechanical Engineering, National Technical University of Athens, Greece
| | - George Geroulakos
- 1 Department of Vascular Surgery, Medical School, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
| | - Christos Manopoulos
- 2 Biofluid Mechanics and Biomedical Engineering Laboratory, Fluids Section, School of Mechanical Engineering, National Technical University of Athens, Greece
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Stasinopoulou M, Kadoglou NPE, Christodoulou E, Paronis E, Kostomitsopoulos NG, Valsami G, Liapis CD, Kakisis J. Statins’ Withdrawal Induces Atherosclerotic Plaque Destabilization in Animal Model—A “Rebound” Stimulation of Inflammation. J Cardiovasc Pharmacol Ther 2019; 24:377-386. [DOI: 10.1177/1074248419838499] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 01/09/2023]
Affiliation(s)
- Marianna Stasinopoulou
- Center of Clinical, Experimental Surgery, and Translational Research, Biomedical Research Foundation, Academy of Athens, Athens, Greece
| | - Nikolaos P. E. Kadoglou
- Centre for Statistics in Medicine—Botnar Research Centre, University of Oxford, Oxford, United Kingdom
| | - Eirini Christodoulou
- Department of Pharmacy, Laboratory of Biopharmaceutics-Pharmacokinetics, National and Kapodistrian University of Athens, Athens, Greece
| | - Efthymios Paronis
- Center of Clinical, Experimental Surgery, and Translational Research, Biomedical Research Foundation, Academy of Athens, Athens, Greece
| | - Nikolaos G. Kostomitsopoulos
- Center of Clinical, Experimental Surgery, and Translational Research, Biomedical Research Foundation, Academy of Athens, Athens, Greece
| | - Georgia Valsami
- Department of Pharmacy, Laboratory of Biopharmaceutics-Pharmacokinetics, National and Kapodistrian University of Athens, Athens, Greece
| | - Christos D. Liapis
- Department of Vascular Surgery, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - John Kakisis
- Department of Vascular Surgery, Medical School, National and Kapodistrian University of Athens, Athens, Greece
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Nakos I, Kadoglou NPE, Gkeka P, Tzallas AT, Giannakeas N, Tsalikakis DG, Katsimpoulas M, Mantziaras G, Kostomitsopoulos N, Liapis CD, Kakisis J. Exercise Training Attenuates the Development of Cardiac Autonomic Dysfunction in Diabetic Rats. In Vivo 2019; 32:1433-1441. [PMID: 30348698 DOI: 10.21873/invivo.11396] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 07/07/2018] [Revised: 09/25/2018] [Accepted: 09/27/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND/AIM Exercise training usually complements pharmacological therapy of type 1 diabetes mellitus, however, little is known about its impact on cardiac autonomic neuropathy. Our aim was to evaluate the impact of exercise on electrocardiographic parameters and heart rate variability in diabetic rats. MATERIALS AND METHODS Wistar rats were randomly assigned to four groups (n=12): Sedentary control (SC), sedentary diabetic (SD), exercise control (EC), and exercise diabetic (ED). Diabetes was induced by a single intraperitoneal injection of streptozotocin (45 mg/kg). Exercise groups underwent 8 weeks of training on a treadmill. At the end of the study, echocardiography was performed and continuous electrocardiographic recording was obtained by intra-abdominally implanted telemetric devices. Diabetes induction significantly reduced the heart rate and increased the blood glucose level (p<0.001) and R-wave amplitude (p<0.05). Frequency-domain spectral variables were also analyzed. The SD group had a significantly lower absolute high-frequency component (p<0.05) and higher normalized low-frequency component, as well as low-frequency power divided by the high-frequency power ratio when compared to the SC and EC groups (p<0.05). All these diabetes-related adverse changes in heart rate variability parameters were significantly reversed by exercise training (p<0.05). Overall, our study shows that early initiation of systemic exercise training prevents the development of cardiac autonomic neuropathy in rats with type 1 diabetes mellitus, by favorable change in the balance between parasympathetic and sympathetic activity.
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Affiliation(s)
- Ioannis Nakos
- Biomedical Research Foundation, Center of Clinical, Experimental Surgery, and Translational Research, Academy of Athens, Athens, Greece
| | - Nikolaos P E Kadoglou
- Biomedical Research Foundation, Center of Clinical, Experimental Surgery, and Translational Research, Academy of Athens, Athens, Greece.,The Heart Hospital, University College London, London, U.K
| | - Paraskevi Gkeka
- Biomedical Research Foundation, Center of Clinical, Experimental Surgery, and Translational Research, Academy of Athens, Athens, Greece
| | - Alexandros T Tzallas
- Department of Computer Engineering, School of Applied Technology, Technological Educational Institute of Epirus, Arta, Greece
| | - Nikolaos Giannakeas
- Department of Computer Engineering, School of Applied Technology, Technological Educational Institute of Epirus, Arta, Greece
| | - Dimitrios G Tsalikakis
- Research and Analysis Laboratory, Department of Informatics and Telecommunication Engineering, University of Western Macedonia, Kozani, Greece
| | - Michalis Katsimpoulas
- Biomedical Research Foundation, Center of Clinical, Experimental Surgery, and Translational Research, Academy of Athens, Athens, Greece
| | - Georgios Mantziaras
- Biomedical Research Foundation, Center of Clinical, Experimental Surgery, and Translational Research, Academy of Athens, Athens, Greece
| | - Nikolaos Kostomitsopoulos
- Biomedical Research Foundation, Center of Clinical, Experimental Surgery, and Translational Research, Academy of Athens, Athens, Greece
| | - Christos D Liapis
- Biomedical Research Foundation, Center of Clinical, Experimental Surgery, and Translational Research, Academy of Athens, Athens, Greece.,Athens Medical Center, Vascular and Endovascular Surgery Clinic, Athens, Greece
| | - John Kakisis
- Biomedical Research Foundation, Center of Clinical, Experimental Surgery, and Translational Research, Academy of Athens, Athens, Greece.,Athens Medical Center, Vascular and Endovascular Surgery Clinic, Athens, Greece
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13
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Moulakakis KG, Karaolanis G, Antonopoulos CN, Kakisis J, Klonaris C, Preventza O, Coselli JS, Geroulakos G. Open repair of thoracoabdominal aortic aneurysms in experienced centers. J Vasc Surg 2018; 68:634-645.e12. [DOI: 10.1016/j.jvs.2018.03.410] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 03/08/2018] [Indexed: 11/29/2022]
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14
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Gourzoulidis G, Kourlaba G, Kakisis J, Matsagkas M, Giannakoulas G, Gourgoulianis KI, Vassilakopoulos T, Maniadakis N. Cost-Effectiveness Analysis of Rivaroxaban for Treatment of Deep Vein Thrombosis and Pulmonary Embolism in Greece. Clin Drug Investig 2018; 37:833-844. [PMID: 28608312 DOI: 10.1007/s40261-017-0540-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND OBJECTIVE Venous thromboembolism (VTE), comprising deep-vein thrombosis (DVT) and pulmonary embolism (PE), is a major healthcare concern that results in substantial morbidity and mortality with great economic burden for healthcare systems. Hence, the need for effective and efficient treatment of patients with VTE is important for both clinical and economic reasons. The objective of this study was to evaluate the cost effectiveness of rivaroxaban compared to standard of care (SoC) with enoxaparin followed by dose-adjusted vitamin-K antagonists for the treatment of DVT and PE in Greece. METHODS An existing Markov model was locally adapted from a third-party payer perspective to reflect the management and complications of DVT and PE in the course of 3-month cycles, up to death. The clinical inputs and utility values were extracted from published studies. Direct medical costs, obtained from local resources, were incorporated in the model and refer to year 2017. Both costs and outcomes were discounted at 3.5%. The incremental cost-effectiveness ratio (ICER) per quality-adjusted life year (QALY) gained was calculated. Probabilistic sensitivity analysis (PSA) was carried out to deal with uncertainty. RESULTS The base-case analysis showed that rivaroxaban in 3- and 6-month treatment duration for DVT and PE, respectively, as this is the common clinical practice in Greece, was associated with a 0.02 and 0.01 increment in QALYs compared to SoC, respectively. Rivaroxaban was associated with a reduced total cost in DVT (€85) but with an additional total cost in PE (€2) compared to SoC. Therefore, rivaroxaban was a dominant (less costly, more effective) and cost-effective (ICER: €177) alternative over SoC for the management of DVT and PE, respectively. PSA revealed that the probability of rivaroxaban being cost effective at a threshold of €34,000 per QALY gained was 99% and 81% for DVT and PE, respectively. CONCLUSION Rivaroxaban may represent a cost-effective option relative to SoC for the management of DVT and PE in Greece.
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Affiliation(s)
- George Gourzoulidis
- Department of Health Services Organization and Management, National School of Public Health, 196 Alexandras Avenue, 11521, Athens, Greece.
| | - Georgia Kourlaba
- The Stavros Niarchos Foundation-Collaborative Center for Clinical Epidemiology and Outcomes Research (CLEO), School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - John Kakisis
- Department of Vascular Surgery, Attikon Hospital, Athens University Medical School, Athens, Greece
| | - Mitiadis Matsagkas
- Department of Surgery - Vascular Surgery Unit, School of Medicine, University of Ioannina, Ioannina, Greece
| | - George Giannakoulas
- First Department of Cardiology, AHEPA Hospital, Aristotle University of Thessaloniki, Thessaloníki, Greece
| | | | - Theodoros Vassilakopoulos
- Department of Critical Care and Pulmonary Services, Evangelismos Hospital, University of Athens Medical School, Athens, Greece
| | - Nikos Maniadakis
- Department of Health Services Organization and Management, National School of Public Health, 196 Alexandras Avenue, 11521, Athens, Greece
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Naylor AR, Ricco JB, de Borst GJ, Debus S, de Haro J, Halliday A, Hamilton G, Kakisis J, Kakkos S, Lepidi S, Markus HS, McCabe DJ, Roy J, Sillesen H, van den Berg JC, Vermassen F, Kolh P, Chakfe N, Hinchliffe RJ, Koncar I, Lindholt JS, Vega de Ceniga M, Verzini F, Archie J, Bellmunt S, Chaudhuri A, Koelemay M, Lindahl AK, Padberg F, Venermo M. Editor's Choice - Management of Atherosclerotic Carotid and Vertebral Artery Disease: 2017 Clinical Practice Guidelines of the European Society for Vascular Surgery (ESVS). Eur J Vasc Endovasc Surg 2018; 55:3-81. [PMID: 28851594 DOI: 10.1016/j.ejvs.2017.06.021] [Citation(s) in RCA: 785] [Impact Index Per Article: 130.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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16
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Moulakakis KG, Antonopoulos CN, Klonaris C, Kakisis J, Lazaris AM, Sfyroeras GS, Mantas G, Mylonas SN, Vasdekis SN, Brountzos EN, Geroulakos G. Bilateral Endograft Limb Occlusion after Endovascular Aortic Repair: Predictive Factors of Occurrence. Ann Vasc Surg 2018; 46:299-306. [DOI: 10.1016/j.avsg.2017.07.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 06/12/2017] [Accepted: 07/14/2017] [Indexed: 10/19/2022]
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17
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Moulakakis KG, Kakisis J, Tsivgoulis G, Zymvragoudakis V, Spiliopoulos S, Lazaris A, Sfyroeras GS, Mylonas SN, Vasdekis SN, Geroulakos G, Brountzos EN. Acute Early Carotid Stent Thrombosis: A Case Series. Ann Vasc Surg 2017; 45:69-78. [PMID: 28483628 DOI: 10.1016/j.avsg.2017.04.039] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 04/06/2017] [Accepted: 04/07/2017] [Indexed: 02/08/2023]
Abstract
BACKGROUND Acute early carotid stent thrombosis (AcuteCST) is a rare complication after carotid artery stenting (CAS). The purpose of this retrospective study was to investigate the incidence, causes, and optimal management of AcuteCST. METHODS Medical records of all patients undergoing CAS between 2008 and 2016 were retrospectively reviewed. The time of thrombosis, grade of stenosis, lesion side, preprocedural and postprocedural anticoagulants, causes, symptoms, treatment, recanalization, and outcome were reviewed. RESULTS Overall, 674 patients were treated with CAS. Four cases of AcuteCST were identified (0.59%). In the first patient, the stent thrombosis was attributed to dissection caused by filter deployment within a distal internal carotid artery with 360° coiling. Notably, in 3 of the 4 cases of thrombosis a second overlapping stent had been deployed. In total, 41 patients of the cohort under investigation underwent overlapping stent deployment. The use of a second overlapping stent as a bail-out procedure due to dissection or malposition or due to long lesions was correlated with increased rate of thrombosis (3/41 [7.3%] vs. 1/633 [0.002%]). In 2 patients, carotid stents were thrombosed within 2 hr of the procedure. Endovascular thrombus aspiration and subsequent eversion carotid endarterectomy with stent explantation in the first patient and intrathrombus urokinase administration with thromboaspiration and additional stent placement in the second patient were followed. In the other 2 patients having their carotid stents thrombosed 3 and 4 days after the procedure, treatment with low weight molecular heparin and antiplatelet regimens was followed. CONCLUSIONS The use of overlapping stents in the carotid artery is a predisposing factor for AcuteCST. Prognostic factors of this potentially devastating complication are the initial clinical presentation expressing the grade of ischemic brain damage, the accurate and timely recognition of the thrombosis, and the prompt restoration of oxygenated blood flow into the viable tissue at risk of infarction.
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Affiliation(s)
- Konstantinos G Moulakakis
- Department of Vascular Surgery, School of Medicine, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece.
| | - John Kakisis
- Department of Vascular Surgery, School of Medicine, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
| | - Georgios Tsivgoulis
- Department of Neurology, School of Medicine, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
| | - Vasilis Zymvragoudakis
- Department of Vascular Surgery, School of Medicine, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
| | - Stavros Spiliopoulos
- Department of Radiology, School of Medicine, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
| | - Andreas Lazaris
- Department of Vascular Surgery, School of Medicine, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
| | - Giorgos S Sfyroeras
- Department of Vascular Surgery, School of Medicine, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
| | - Spyridon N Mylonas
- Department of Vascular Surgery, School of Medicine, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
| | - Spyridon N Vasdekis
- Department of Vascular Surgery, School of Medicine, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
| | - George Geroulakos
- Department of Vascular Surgery, School of Medicine, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
| | - Elias N Brountzos
- Department of Radiology, School of Medicine, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
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Kim GY, Lawrence PF, Moridzadeh RS, Zimmerman K, Munoz A, Luna-Ortiz K, Oderich GS, de Francisco J, Ospina J, Huertas S, de Souza LR, Bower TC, Farley S, Gelabert HA, Kret MR, Harris EJ, De Caridi G, Spinelli F, Smeds MR, Liapis CD, Kakisis J, Papapetrou AP, Debus ES, Behrendt CA, Kleinspehn E, Horton JD, Mussa FF, Cheng SWK, Morasch MD, Rasheed K, Bennett ME, Bismuth J, Lumsden AB, Abularrage CJ, Farber A. New predictors of complications in carotid body tumor resection. J Vasc Surg 2017; 65:1673-1679. [PMID: 28527929 DOI: 10.1016/j.jvs.2016.12.124] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [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: 09/12/2016] [Accepted: 12/10/2016] [Indexed: 12/29/2022]
Abstract
OBJECTIVE This study examined the relationship between two new variables, tumor distance to base of skull (DTBOS) and tumor volume, with complications of carotid body tumor (CBT) resection, including bleeding and cranial nerve injury. METHODS Patients who underwent CBT resection between 2004 and 2014 were studied using a standardized, multi-institutional database. Demographic, perioperative, and outcomes data were collected. CBT measurements were determined from computed tomography, magnetic resonance imaging, and ultrasound examination. RESULTS There were 356 CBTs resected in 332 patients (mean age, 51 years; 72% female); 32% were classified as Shamblin I, 43% as Shamblin II, and 23% as Shamblin III. The mean DTBOS was 3.3 cm (standard deviation [SD], 2.1; range, 0-10), and the mean tumor volume was 209.7 cm3 (SD, 266.7; range, 1.1-1642.0 cm3). The mean estimated blood loss (EBL) was 257 mL (SD, 426; range, 0-3500 mL). Twenty-four percent of patients had cranial nerve injuries. The most common cranial nerves injured were the hypoglossal (10%), vagus (11%), and superior laryngeal (5%) nerves. Both Shamblin grade and DTBOS were statistically significantly correlated with EBL of surgery and cranial nerve injuries, whereas tumor volume was statistically significantly correlated with EBL. The logistic model for predicting blood loss and cranial nerve injury with all three variables-Shamblin, DTBOS, and volume (R2 = 0.171, 0.221, respectively)-was superior to a model with Shamblin alone (R2 = 0.043, 0.091, respectively). After adjusting for Shamblin grade and volume, every 1-cm decrease in DTBOS was associated with 1.8 times increase in risk of >250 mL of blood loss (95% confidence interval, 1.25-2.55) and 1.5 times increased risk of cranial nerve injury (95% confidence interval, 1.19-1.92). CONCLUSIONS This large study of CBTs demonstrates the value of preoperatively determining tumor dimensions and how far the tumor is located from the base of the skull. DTBOS and tumor volume, when used in combination with the Shamblin grade, better predict bleeding and cranial nerve injury risk. Furthermore, surgical resection before expansion toward the base of the skull reduces complications as every 1-cm decrease in the distance to the skull base results in 1.8 times increase in >250 mL of blood loss and 1.5 times increased risk of cranial nerve injury.
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Affiliation(s)
- Gloria Y Kim
- University of Michigan Health System, Ann Arbor, Mich; UCLA Health System, Los Angeles, Calif
| | | | - Rameen S Moridzadeh
- UCLA Health System, Los Angeles, Calif; NYU Langone Medical Center, New York, NY
| | | | | | | | | | | | | | | | | | | | | | | | - Marcus R Kret
- Colorado Cardiovascular Surgical Associates, Denver, Colo
| | - E John Harris
- Stanford University School of Medicine, Stanford, Calif
| | | | | | - Matthew R Smeds
- University of Arkansas for Medical Sciences, Little Rock, Ark
| | | | | | | | - Eike S Debus
- University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | | | | | - Joshua D Horton
- NYU Langone Medical Center, New York, NY; Medical University of South Carolina, Charleston, SC
| | - Firas F Mussa
- NYU Langone Medical Center, New York, NY; Columbia University, New York, NY
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Moulakakis KG, Kadoglou NP, Antonopoulos CN, Mylonas SN, Kakisis J, Papadakis I, Karakitsos P, Liapis CD. Changes in Arterial Stiffness and N-terminal pro-brain natriuretic peptide Levels after Endovascular Repair of Descending Thoracic Aorta. Ann Vasc Surg 2017; 38:220-226. [DOI: 10.1016/j.avsg.2016.04.025] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 03/21/2016] [Accepted: 04/10/2016] [Indexed: 11/15/2022]
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20
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Moulakakis KG, Alexiou VG, Sfyroeras GS, Kakisis J, Lazaris A, Vasdekis SN, Brountzos EN, Geroulakos G. Endovascular management of infected iliofemoral pseudoaneurysms – a systematic review. VASA 2017; 46:5-9. [DOI: 10.1024/0301-1526/a000572] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Abstract. We conducted a systematic review regarding the efficacy and outcome of endovascular treatment of infected iliofemoral arterial pseudoaneurysms with covered stents. 35 cases were identified, including 5 own. 22 pseudoaneurysms were located in the femoral area and 13 in the iliac vessels. The most commonly reported complaints were pulsatile groin mass (40 %), sepsis (37.1 %), active bleeding (31.4 %), and groin infection with purulent discharge (17.1 %). S. aureus (65.7 %) and Streptococcus species (22.9 %) were the most common microbes isolated. Factors for the development of infected pseudoaneurysms were intravenous drug use (20 %), infection of anastomosis in bypass surgery (22.9 %), cancer (14.3 %), history of multiple hip operations (14.3 %), renal transplantation (2.9 %), and obesity (5.7 %). The most commonly used covered stents were Viabahn (22.9 %),Jostent (17.1 %), Fluency (14.3 %), and Wallgraft (14.3 %). In 15 cases, surgical debridement and/or drainage was also performed.The mean follow-up was 15.8 months. There were only 2 cases of stent graft thrombosis (5.7 %). 2 patients required an open vascular bypass procedure at a later stage. One death was attributed to procedure-related complications (2.9 %). The infection rate of the deployed stent graft in follow-up was 3.4 %. Endovascular exclusion of an infected pseudoaneurysm with primary stent grafting and drainage may be an option in high-risk patients.
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Affiliation(s)
- Konstantinos G. Moulakakis
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Vangelis G. Alexiou
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
- Alfa Institute of Biomedical Sciences (AIBS), Athens, Greece
| | - George S. Sfyroeras
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - John Kakisis
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Andreas Lazaris
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Spyridon N. Vasdekis
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Elias N. Brountzos
- Department of Radiology, Athens University Medical School, Attikon, University Hospital, Athens, Greece
| | - George Geroulakos
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
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Moulakakis KG, Mylonas SN, Lazaris A, Tsivgoulis G, Kakisis J, Sfyroeras GS, Antonopoulos CN, Brountzos EN, Vasdekis SN. Acute Carotid Stent Thrombosis. Vasc Endovascular Surg 2016; 50:511-521. [DOI: 10.1177/1538574416665986] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Acute carotid stent thrombosis (ACST) is a rare complication that can lead to dramatic and catastrophic consequences. A rapid diagnosis and prompt recanalization of the internal carotid artery are needed to minimize the ischemic insult and the reperfusion injury. We reviewed the current literature on this devastating complication of CAS with the intention of investigating the potential causative factors and to define the appropriate management. According to our study discontinuation of antiplatelet therapy, resistance to antiplatelet agents and inherent or acquired thrombotic disorders are the main causes of thrombosis. Technical intraprocedural parameters such as dissection, atheroma prolapse, kinking of the distal part of internal carotid artery and embolic protection device occlusion can also result in early carotid stent thrombosis. Rapid reperfusion ensures an improved neurological outcome and a better prognosis in the short and long term. Thrombolysis, mechanical thrombectomy or thromboaspiration in combination with drug or thrombolytic therapy, surgical therapy and re-angioplasty are treatment options that have been used with encouraging results. In conclusion, optimal perioperative antiplatelet treatment as well as technical considerations regarding the carotid artery stenting plays a determinant role.
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Affiliation(s)
- Konstantinos G. Moulakakis
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Spyridon N. Mylonas
- Vascular Unit, 2nd Clinic of Surgery, Aretaieion Hospital, Medical School, University of Athens, Athens, Greece
| | - Andreas Lazaris
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Georgios Tsivgoulis
- Department of Neurology, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - John Kakisis
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Giorgos S. Sfyroeras
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Constantine N. Antonopoulos
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Elias N. Brountzos
- Department of Radiology, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Spyridon N. Vasdekis
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
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Moulakakis KG, Sfyroeras GS, Alexiou VG, Kakisis J, Lazaris A, Vasdekis SN, Brountzos EN, Geroulakos G. Endovascular Management of Infected Iliofemoral Pseudoaneurysms. Vasc Endovascular Surg 2016; 50:421-6. [DOI: 10.1177/1538574416655895] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The treatment of infected iliofemoral pseudoaneurysms is challenging and controversial. We present our experience regarding the efficacy and outcome of endovascular treatment of infected iliofemoral arterial pseudoaneurysms with covered stents. Our experience with 5 cases showed that stent grafting combined with antibiotic therapy and provisional drainage may be a safe and effective option in patients with cancer, patients with history of multiple hip revisions, and drug-addicted users. In our small case series, the reinfection rate was null and no covered stent thrombosis occurred. These results are fairly encouraging, but further studies with longer follow-up in a larger number of patients are needed to confirm the efficacy and durability of the technique.
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Affiliation(s)
- Konstantinos G. Moulakakis
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - George S. Sfyroeras
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Vangelis G. Alexiou
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
- Alfa Institute of Biomedical Sciences (AIBS), Athens, Greece
| | - John Kakisis
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Andreas Lazaris
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Spyridon N. Vasdekis
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Elias N. Brountzos
- Department of Radiology, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - George Geroulakos
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
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Moulakakis KG, Sfyroeras GS, Papapetrou A, Antonopoulos CN, Mantas G, Kakisis J, Alepaki M, Mylonas SN, Karakitsos P, Liapis CD. Inflammatory response and renal function following endovascular repair of the descending thoracic aorta. J Endovasc Ther 2016; 22:201-6. [PMID: 25809362 DOI: 10.1177/1526602815573227] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [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] [Indexed: 11/15/2022]
Abstract
PURPOSE To evaluate inflammatory response and renal function after thoracic endovascular aortic repair (TEVAR) of lesions in the descending thoracic aorta. METHODS Thirty-two consecutive patients treated with TEVAR from January 2010 to August 2013 were enrolled in this prospective study. Two were excluded owing to dissecting thoracic aortic aneurysm (TAA) extending into the renal arteries with renal failure in one and a saccular TAA in which a multilayer flow-modulating stent was implanted in the other. This left 30 patients (28 men; mean age 68.8±5.9 years) with 28 TAAs, an aortic dissection, and an aortic ulcer for the analysis. Temperature and serum levels of white blood cells (WBCs), C-reactive protein (CRP), interleukin-10 (IL-10), IL-6, IL-8, tumor necrosis factor-alpha (TNF-α), creatinine, urea, and cystatin C were measured preoperatively and at 24 and 48 hours postoperatively. RESULTS Statistically significant increases in temperature and serum levels of WBCs, CRP, IL-10, and IL-6 were observed 24 and 48 hours postoperatively compared to baseline (all p<0.05). The number of endografts and the coverage of the celiac or subclavian artery did not affect the magnitude of the inflammatory response. No significant differences were observed concerning serum levels of IL-8, TNF-α, creatinine, or cystatin C from baseline to 24 or 48 hours postoperatively. CONCLUSION Endograft implantation in the thoracic aorta may propagate an inflammatory response during the early postoperative period. No clinical adverse events related to the increased inflammatory response were observed. Renal function does not seem to be deteriorated after TEVAR in the descending thoracic aorta.
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Affiliation(s)
| | | | | | | | - George Mantas
- Attikon University Hospital, University of Athens, Greece
| | - John Kakisis
- Attikon University Hospital, University of Athens, Greece
| | - Maria Alepaki
- Attikon University Hospital, University of Athens, Greece
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Troupis T, Michalinos A, Kakisis J, Natsis K, Sofidis G, Skandalakis P. Bilateral lingual-facial trunk: anatomic and clinical implications. Folia Morphol (Warsz) 2015; 74:548-51. [PMID: 26620521 DOI: 10.5603/fm.2015.0122] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 11/04/2014] [Revised: 12/10/2014] [Accepted: 12/12/2014] [Indexed: 11/25/2022]
Abstract
Common origin of lingual and facial artery is a relatively frequent anatomic varia-tion. Instead, bilateral lingual-facial trunk has been described only sparsely in the literature. In this report authors describe and analyse a case of bilateral common lingual-facial trunk in the context of its anatomical, clinical and embryological implications. We also describe possible consequences in performance of elective and emergent surgical operations and modification in surgical techniques that should be considered. We believe that surgeons should be suspicious for this variation's existence and keep alternative solutions in their armentarium.
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Affiliation(s)
- T Troupis
- Department of Anatomy, Faculty of Medicine, National and Kapodistrian University of Athens, Greece.
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Moulakakis KG, Mylonas SN, Kakisis J, Geroulakos G. Inflammatory response following stent grafting for acute aortic syndrome. Eur J Cardiothorac Surg 2015; 49:1247-8. [DOI: 10.1093/ejcts/ezv341] [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: 11/13/2022] Open
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Sassani SG, Kakisis J, Tsangaris S, Sokolis DP. Layer-dependent wall properties of abdominal aortic aneurysms: Experimental study and material characterization. J Mech Behav Biomed Mater 2015; 49:141-61. [DOI: 10.1016/j.jmbbm.2015.04.027] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 04/21/2015] [Accepted: 04/27/2015] [Indexed: 12/11/2022]
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Avgerinos E, Kakisis J, Moulakakis K, Giannakopoulos T, Sfyroeras G, Antonopoulos C, Kadoglou N, Liapi C. Statins Influence Long Term Restenosis and Cardiovascular Events Following Carotid Endarterectomy. Curr Vasc Pharmacol 2015; 13:239-47. [DOI: 10.2174/15701611113119990130] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Revised: 06/11/2013] [Accepted: 06/17/2013] [Indexed: 11/22/2022]
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Moulakakis KG, Mylonas SN, Kakisis J, Kadoglou NPE, Papadakis I, Sfyroeras GS, Antonopoulos CCN, Mantas G, Ikonomidis I, Liapis CD. Arterial Stiffness Alterations and Inflammatory Response Following Endovascular Aortic Repair: Based on a Presentation at the 2013 VEITH Symposium, November 19-23, 2013 (New York, NY, USA). Aorta (Stamford) 2015; 3:75-80. [PMID: 26798761 DOI: 10.12945/j.aorta.2015.14-071] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2014] [Accepted: 03/27/2015] [Indexed: 11/18/2022]
Abstract
Endovascular abdominal aortic aneurysm repair (EVAR) and thoracic aortic aneurysm repair (TEVAR) have been widely incorporated into clinical practice. However, changes in arterial stiffness and post-implantation syndrome after aortic endografting remain important issues under investigation. The aneurysm sac wall motion after successful EVAR and TEVAR reflects complex interactions between all the components of the excluded aneurysm, including true compliance of the aneurysm wall itself, intra-aneurysm sac pressure, remodeling of the thrombus, and mechanical characteristics of the endograft. Experimental and clinical studies have shown that aortic endografting results in increased arterial stiffness in animal models. It can be assumed that the alterations of aortic mechanical properties can have a direct impact on heart output. The long-term impact of these mechanical changes on cardiovascular outcomes and the potential effects of different endografts on hemodynamics are important issues under investigation. Post-implantation syndrome (PIS) is a systemic inflammatory response frequently observed after endovascular treatment of aortic pathologies. The main features of PIS include fever, leukocytosis, elevated C-reactive protein levels, and coagulation disturbances. Endograft design appears to influence this inflammatory response following aortic endografting; woven polyester endografts have been shown to be associated with greater inflammatory response compared to PTFE stent grafts. The purpose of this paper is to review the literature to elucidate arterial stiffness alterations and inflammatory response after EVAR and TEVAR and the impact of endograft design on aortic stiffness and the post-inflammatory response.
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Affiliation(s)
| | - Spyridon N Mylonas
- Department of Vascular Surgery, Medical School, University of Athens, Greece
| | - John Kakisis
- Department of Vascular Surgery, Medical School, University of Athens, Greece
| | | | - Ioannis Papadakis
- Department of Cardiology, Attikon University Hospital, Athens, Greece
| | - George S Sfyroeras
- Department of Vascular Surgery, Medical School, University of Athens, Greece
| | | | - George Mantas
- Department of Vascular Surgery, Medical School, University of Athens, Greece
| | | | - Christos D Liapis
- Department of Vascular Surgery, Medical School, University of Athens, Greece
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Moulakakis KG, Kakisis J, Dalainas I, Smyrniotis V, Liapis CD. Endovascular management of secondary aortoduodenal fistula: the importance of gut restoration. Int J Angiol 2015; 24:55-8. [PMID: 25780328 DOI: 10.1055/s-0033-1349714] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 12/12/2022] Open
Abstract
Secondary aortoenteric fistula (SAEF) is a rare, life-threatening complication of aortic reconstructive surgery. Graft excision associated with gut repair and extra-anatomic bypass or in situ aortic reconstruction is the best option. However, it is associated with high mortality rates, especially when undertaken in unstable patients with severe comorbidities. We present a case of SAEF successfully treated by endovascular repair and gut restoration. After laparotomy, a dense inflammatory "frozen" mass was found around the involved part of the duodenum and the aortic sac. Because of his comorbidities, the difficulty in dissection of the aortic sac and the risk of damage in adjacent organs, the initial plan for aortic reconstruction was abandoned. A surgical isolation of the third portion of the duodenum and a duodenum-jejunal anastomosis were performed. An Endurant endograft 32-16-16 mm (Medtronic, Inc., Minneapolis, MN) was implanted to achieve aortic continuity. Twenty months postdischarge, the patient remains in good general condition, afebrile, and with normal laboratory tests and inflammation markers. In high-risk patients, endovascular intervention combined with gut repair without further aortic reconstruction can be a permanent solution requiring, however, close surveillance.
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Affiliation(s)
- Konstantinos G Moulakakis
- Department of Vascular Surgery, Athens University Medical School, "Attikon" University Hospital, Athens, Greece
| | - John Kakisis
- Department of Vascular Surgery, Athens University Medical School, "Attikon" University Hospital, Athens, Greece
| | - Ilias Dalainas
- Department of Vascular Surgery, Athens University Medical School, "Attikon" University Hospital, Athens, Greece
| | - Vasilis Smyrniotis
- 4th Department of Surgery, Athens University, Medical School, "Attikon" University Hospital, Athens, Greece
| | - Christos D Liapis
- Department of Vascular Surgery, Athens University Medical School, "Attikon" University Hospital, Athens, Greece
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Moulakakis KG, Mylonas SN, Antonopoulos CN, Sfyroeras GS, Kakisis J. Reply: To PMID 25135872. J Vasc Surg 2015; 61:587-8. [PMID: 25619584 DOI: 10.1016/j.jvs.2014.10.024] [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] [Received: 09/24/2014] [Accepted: 10/15/2014] [Indexed: 10/24/2022]
Affiliation(s)
- Konstantinos G Moulakakis
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Spyridon N Mylonas
- Vascular Unit, 2nd Clinic of Surgery, Aretaieion Hospital Medical School, University of Athens, Athens, Greece
| | - Constantine N Antonopoulos
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - George S Sfyroeras
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - John Kakisis
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
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Moulakakis KG, Mylonas SN, Kakisis J, Vasdekis SN. Commentary: Implications of Ovation's Unique Sealing Mechanism. J Endovasc Ther 2014; 21:839-40. [DOI: 10.1583/14-4771c.1] [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] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Moulakakis KG, Mylonas SN, Dalainas I, Kakisis J, Kotsis T, Liapis CD. Management of complicated and uncomplicated acute type B dissection. A systematic review and meta-analysis. Ann Cardiothorac Surg 2014; 3:234-46. [PMID: 24967162 DOI: 10.3978/j.issn.2225-319x.2014.05.08] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Accepted: 05/21/2014] [Indexed: 01/25/2023]
Abstract
BACKGROUND The management of acute type B dissection represents a clinical challenge. We undertook a systematic review of the available literature regarding medical, surgical and endovascular treatments of acute type B aortic dissection and combined the eligible studies into a meta-analysis. METHODS An extensive electronic health database search was performed on all articles published from January 2006 up to November 2013 describing the management of acute type B aortic dissection. Studies including less than 15 patients were excluded. RESULTS ACUTE COMPLICATED TYPE B DISSECTION: overall, 2,531 patients were treated with endovascular repair (TEVAR) and the pooled rate for 30-day/in-hospital mortality was 7.3%. The pooled estimates for cerebrovascular events, spinal cord ischemia (SCI) and total neurologic events were 3.9%, 3.1% and 7.3%, respectively. A total of 1,276 patients underwent open surgical repair and the pooled rate for 30-day/in-hospital mortality was 19.0%. The pooled rate for cerebrovascular events was 6.8%, for SCI 3.3% and for total neurologic complications 9.8%. Acute uncomplicated type B dissection: outcome of 2,347 patients who underwent conservative medical management were analyzed. The pooled 30-day/in-hospital mortality rate was 2.4%. The pooled rate for cerebrovascular events was 1%, for SCI 0.8% and for overall neurologic complications 2%. CONCLUSIONS Endovascular repair provides a superior 30-day/in-hospital survival for acute complicated type B aortic dissection compared to surgical aortic reconstruction. However, open repair still has a significant role as endovascular repair is not applicable in all patients and there remains concerns regarding the durability of this technique. TEVAR seems to have a more favorable outcome regarding aortic remodeling and the aortic-specific survival rate when compared with medical therapy alone. Randomized controlled trials focusing on the prognostic factors of early and late complications in uncomplicated type B dissections are needed.
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Affiliation(s)
- Konstantinos G Moulakakis
- 1 Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece ; 2 The Collaborative Research Group, Macquarie University, Sydney, Australia ; 3 Vascular Unit, 2nd Clinic of Surgery, Aretaieion Hospital, Medical School, University of Athens, Athens, Greece
| | - Spyridon N Mylonas
- 1 Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece ; 2 The Collaborative Research Group, Macquarie University, Sydney, Australia ; 3 Vascular Unit, 2nd Clinic of Surgery, Aretaieion Hospital, Medical School, University of Athens, Athens, Greece
| | - Ilias Dalainas
- 1 Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece ; 2 The Collaborative Research Group, Macquarie University, Sydney, Australia ; 3 Vascular Unit, 2nd Clinic of Surgery, Aretaieion Hospital, Medical School, University of Athens, Athens, Greece
| | - John Kakisis
- 1 Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece ; 2 The Collaborative Research Group, Macquarie University, Sydney, Australia ; 3 Vascular Unit, 2nd Clinic of Surgery, Aretaieion Hospital, Medical School, University of Athens, Athens, Greece
| | - Thomas Kotsis
- 1 Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece ; 2 The Collaborative Research Group, Macquarie University, Sydney, Australia ; 3 Vascular Unit, 2nd Clinic of Surgery, Aretaieion Hospital, Medical School, University of Athens, Athens, Greece
| | - Christos D Liapis
- 1 Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece ; 2 The Collaborative Research Group, Macquarie University, Sydney, Australia ; 3 Vascular Unit, 2nd Clinic of Surgery, Aretaieion Hospital, Medical School, University of Athens, Athens, Greece
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Moulakakis KG, Dalainas I, Kakisis J, Mylonas S, Liapis CD. Endovascular Treatment versus Open Repair for Abdominal Aortic Aneurysms: The Influence of Fitness in Decision Making. Int J Angiol 2014; 22:9-12. [PMID: 24436578 DOI: 10.1055/s-0033-1333868] [Citation(s) in RCA: 3] [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] [Indexed: 10/27/2022] Open
Abstract
Two methods of repair are currently available for an abdominal aortic aneurysm (AAA), open aneurysm repair and endovascular aneurysm repair (EVAR). The decision making depends on the balance of risks and benefits. The treating physician must take into account the patient's life expectancy, the patient's fitness, the anatomic suitability that makes endovascular repair possible, and finally the patient's preference. The patient's fitness is an important variable predicting the outcome of AAA surgical reconstruction. The hypothesis is that the impact of risk factors upon perioperative mortality might differ between patients undergoing open repair and endovascular repair. The purpose of this review article is to investigate whether fitter patients with a large AAA benefit more from having endovascular rather than open repair. According to the available data, there is emerging evidence that patients at high medical risk for open repair may benefit from EVAR while in low risk patients with suitable anatomy for EVAR, both techniques have similar effects. There is rising evidence that a patient with ruptured AAA would benefit more from an endovascular procedure if eligible, and thus fitness in such emergencies is not the first priority but anatomical suitability for EVAR.
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Affiliation(s)
| | - Ilias Dalainas
- Department of Vascular Surgery, "Attikon" University Hospital, Athens, Greece
| | - John Kakisis
- Department of Vascular Surgery, "Attikon" University Hospital, Athens, Greece
| | - Spyridon Mylonas
- Department of Vascular Surgery, "Attikon" University Hospital, Athens, Greece
| | - Christos D Liapis
- Department of Vascular Surgery, "Attikon" University Hospital, Athens, Greece
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Kadoglou NPE, Lambadiari V, Gastounioti A, Gkekas C, Giannakopoulos TG, Koulia K, Maratou E, Alepaki M, Kakisis J, Karakitsos P, Nikita KS, Dimitriadis G, Liapis CD. The relationship of novel adipokines, RBP4 and omentin-1, with carotid atherosclerosis severity and vulnerability. Atherosclerosis 2014; 235:606-12. [PMID: 24956535 DOI: 10.1016/j.atherosclerosis.2014.05.957] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [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: 02/18/2014] [Revised: 05/09/2014] [Accepted: 05/27/2014] [Indexed: 10/25/2022]
Abstract
OBJECTIVE We investigated the relationship of circulating novel adipokines, retinol-binding protein 4 (RBP4) and omentin-1, with advanced carotid atherosclerosis and ultrasound indexes of severity (total plaque area-TPA) and plaque echogenicity and vulnerability (Gray-Scale median - GSM score). METHODS We enrolled 225 patients with high-grade carotid stenosis (HGCS) who underwent carotid revascularization (73 Symptomatic patients, 152 asymptomatic patients) and 75 age- and sex-matched, asymptomatic individuals with low-grade (<50%) carotid stenosis (LGCS). Seventy-three individuals without current manifestations of atherosclerotic disease served as control group (COG). All participants underwent carotid ultrasound with TPA and GSM score assessment. Moreover, clinical parameters, metabolic profile, and circulating levels of hsCRP and adipokines were assessed. RESULTS RBP4 was significantly elevated in HGCS (51.44 ± 16.23 mg/L) compared to LGCS (38.39 ± 8.85 mg/L), independent of symptoms existence, whereas RBP4 levels in COG were even lower (25.74 ± 10.72 mg/L, p < 0.001 compared to either HGCS or LGCS). Inversely, serum omentin-1 levels were significantly lower across HGCS (490.41 ± 172 ng/ml) and LGCS (603.20 ± 202.43 ng/ml) than COG (815.3 ± 185.32, p < 0.001). Moreover, the considerable difference between HGCS and LGCS (p < 0.001) was exclusively attributed to the excessive suppression of omentin-1 concentrations in symptomatic versus asymptomatic (p = 0.004) patients. HGCS and LGCS did not differ in the rest of clinical and biochemical parameters. In multiple regression analysis, RBP4 (beta = 0.232, p = 0.025) and hsCRP (beta = 0.300, p = 0.004) emerged as independent determinants of TPA in patients with carotid atherosclerosis. Low serum levels of omentin-1 correlated with GSM score and symptoms but that association was lost in multivariate analysis.. CONCLUSION RBP4 serum levels were significantly elevated in patients with established carotid atherosclerosis and were positively associated with atherosclerosis severity. The association of low serum omentin-1 with carotid plaque echolucency requires further investigation.. ClinicalTrials.gov Identifier: NCT00636766.
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Affiliation(s)
- Nikolaos P E Kadoglou
- Department of Vascular Surgery, Medical School, "Attikon" University General Hospital, Athens, Greece.
| | - Vaia Lambadiari
- 2nd Department of Internal Medicine, Research Institute and Diabetes Centre, Athens University Medical School, "Attikon" University General Hospital, Athens, Greece
| | - Aimilia Gastounioti
- School of Electrical and Computer Engineering, National Technical University of Athens, Greece
| | - Christos Gkekas
- Department of Vascular Surgery, Medical School, "Attikon" University General Hospital, Athens, Greece
| | | | - Katerina Koulia
- Department of Vascular Surgery, Medical School, "Attikon" University General Hospital, Athens, Greece
| | - Eirini Maratou
- 2nd Department of Internal Medicine, Research Institute and Diabetes Centre, Athens University Medical School, "Attikon" University General Hospital, Athens, Greece
| | - Maria Alepaki
- Department of Cytopathology, "Attikon" University General Hospital, Athens, Greece
| | - John Kakisis
- Department of Vascular Surgery, Medical School, "Attikon" University General Hospital, Athens, Greece
| | - Petros Karakitsos
- Department of Cytopathology, "Attikon" University General Hospital, Athens, Greece
| | - Konstantina S Nikita
- School of Electrical and Computer Engineering, National Technical University of Athens, Greece
| | - George Dimitriadis
- 2nd Department of Internal Medicine, Research Institute and Diabetes Centre, Athens University Medical School, "Attikon" University General Hospital, Athens, Greece
| | - Christos D Liapis
- Department of Vascular Surgery, Medical School, "Attikon" University General Hospital, Athens, Greece
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Moulakakis KG, Antonopoulos CN, Sfyroeras GS, Kakisis J, Papapetrou A, Alepaki M, Karakitsos P, Liapis CD. IF6. Inflammatory Response and Renal Function Following TEVAR. J Vasc Surg 2014. [DOI: 10.1016/j.jvs.2014.03.047] [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: 10/25/2022]
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Raptis A, Antonopoulos C, Kakisis J, Blann A, Kavalieratos G, Mantas G, Mylonas S, Markatis F, Papasideris C, Liapis C. C0410: Hemostatic Derangements in Patients Undergoing Open and Endovascular Repair of Abdominal Aortic Aneurysms. Thromb Res 2014. [DOI: 10.1016/s0049-3848(14)50365-9] [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: 10/25/2022]
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Moulakakis KG, Papapetrou A, Kakisis J, Sfyroeras GS, Liapis CD. New possibility of AAA treatment with E-vita abdominal device. J Cardiovasc Surg (Torino) 2014; 55:71-75. [PMID: 24356048] [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: 06/03/2023]
Abstract
The most dramatic shift in the management of abdominal aortic aneurysms (AAAs) occurred in 1991, when the first endovascular AAA repair was reported. Endovascular aneurysm repair has revolutionized the treatment of infrarenal AAAs. In the last few years, the companies have developed renewed models of grafts and have modified delivery systems tending to make them more atraumatic and flexible in order to deal with difficult anatomies and severely atheromatous and tortuous vessels. The aim of the present paper was to analyze the technical characteristics and properties of the new stent-graft system E-vita abdominal XT and to review the current literature. The E-vita abdominal XT stent-graft seems to be safe and reliable; however, long-term results are needed.
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Affiliation(s)
- K G Moulakakis
- Department of Vascular Surgery Athens University Medical School Attikon University Hospital, Athens, Greece -
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38
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Moulakakis KG, Mylonas SN, Dalainas I, Sfyroeras GS, Markatis F, Kotsis T, Kakisis J, Liapis CD. The chimney-graft technique for preserving supra-aortic branches: a review. Ann Cardiothorac Surg 2013; 2:339-46. [PMID: 23977603 DOI: 10.3978/j.issn.2225-319x.2013.05.14] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 05/24/2013] [Indexed: 11/14/2022]
Abstract
Evolution in the endovascular era has influenced the management of aortic arch pathologies. "Chimney" or "snorkel" graft technique has been used as an alternative in high risk patients unfit for open repair. We reviewed the published literature on the chimney graft technique for preservation of the supra-aortic branches in order to provide an extensive insight of its feasibility and efficacy and investigate its outcomes. 18 reports were identified, with a total of 124 patients and 136 chimney. Primary technical success was achieved in 123/124 patients (99.2%). The perioperative mortality rate was 4.8% and the stroke rate was 4%, while events of spinal cord ischemia were rare. The overall endoleak rate was 18.5%; 13 patients (10.5%) developed a type I endoleak and 10 (8%) patients a type II endoleak. During a median follow-up period of 11.4 months (range, 0.87-20.1 months) all implanted chimney grafts remained patent. From this, we conclude that endovascular aortic arch repair with chimney grafts is associated with a lower mortality rate compared to totally open or hybrid reconstruction. However, the stroke rate remains noteworthy, and requires longterm data to elucidate.
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Affiliation(s)
- Konstantinos G Moulakakis
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece; ; The Systematic Review Unit, The Collaborative Research (CORE) Group, Sydney, Australia
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Moulakakis KG, Mylonas SN, Markatis F, Kotsis T, Kakisis J, Liapis CD. A systematic review and meta-analysis of hybrid aortic arch replacement. Ann Cardiothorac Surg 2013; 2:247-60. [PMID: 23977592 DOI: 10.3978/j.issn.2225-319x.2013.05.06] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Accepted: 05/20/2013] [Indexed: 11/14/2022]
Abstract
BACKGROUND Evolution in the endovascular era has influenced the management of aortic arch pathologies. Several studies have described the use of a combined endovascular and open surgical approach to the treatment of arch diseases. Hybrid repair of arch pathologies has been considered as a less invasive method, and is therefore an appealing option for high-risk patients who are unsuitable for open repairs. The aim of the present meta-analysis was to assess the efficacy of hybrid techniques in patients with aortic arch pathologies. METHODS Extensive electronic literature search was undertaken to identify all articles published up to December 2012 that described hybrid aortic arch repair with intrathoracic supra-aortic branch revascularisation and subsequent stent graft deployment. Eligible studies were divided into two groups: group I included studies on the aortic arch debranching procedure and group II included studies that reported an elephant trunk technique (either "frozen" or stented). Separate meta-analyses were conducted in order to assess technical success, stroke, spinal cord ischemia (SCI), renal failure requiring dialysis, and cardiac and pulmonary complications rate, as well as 30-day/in-hospital mortality. RESULTS Forty-six studies were eligible for the present meta-analysis: 26 studies with a total of 956 patients reported aortic arch debranching procedures, and 20 studies with 1,316 patients performed either 'frozen' or stented elephant trunk technique. The pooled estimate for 30-day/in-hospital mortality was 11.9% for the arch debranching group and 9.5% for the elephant trunk group. Cerebrovascular events of any severity were found to have occurred postoperatively at a pooled rate of 7.6% and 6.2%, while irreversible spinal cord injury symptoms were present in a pooled estimate of 3.6% and 5.0% in the arch debranching and elephant trunk group, respectively. Renal failure requiring dialysis occurred at 5.7% and 3.8% in both groups, while cardiac complications rate was 6.0% in the arch debranching cohort and pulmonary complication was 19.7% in the elephant trunk cohort. CONCLUSIONS Hybrid arch techniques provide a safe alternative to open repair with acceptable short- and mid-term results. However, stroke and mortality rates remain noteworthy. Future prospective trials that compare open conventional techniques with the hybrid method or the entirely endovascular methods are needed.
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Affiliation(s)
- Konstantinos G Moulakakis
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece; ; The Systematic Review Unit, The Collaborative Research (CORE) Group, Sydney, Australia
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Kalimeris K, Kouni S, Kostopanagiotou G, Nomikos T, Fragopoulou E, Kakisis J, Vasdekis S, Matsota P, Pandazi A. Cognitive function and oxidative stress after carotid endarterectomy: comparison of propofol to sevoflurane anesthesia. J Cardiothorac Vasc Anesth 2013; 27:1246-52. [PMID: 23725684 DOI: 10.1053/j.jvca.2012.12.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [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: 10/06/2012] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To examine the antioxidant role of propofol in ischemia-reperfusion during carotid endarterectomy (CEA) and its influence on cognitive dysfunction after CEA. DESIGN A randomized prospective study. SETTING Single-center study in a university hospital. PARTICIPANTS Forty-four patients. INTERVENTIONS Patients underwent elective CEA under general anesthesia with either sevoflurane (group S, n = 21) or propofol (group P, n = 23). MEASUREMENTS AND MAIN RESULTS Cognitive function was assessed with the Mini-Mental State Examination (MMSE) before CEA, 1 hour after CEA, and 24 hours after CEA. Blood samples from the radial artery and the internal jugular vein were drawn before carotid clamping and 5 minutes following unclamping, and peripheral blood was obtained 24 hours postoperatively. Samples were analyzed for lactate, S100B, and P-selectin concentrations and for the antioxidative markers malondialdehyde/low-density lipoprotein ratio and nitrate + nitrite concentrations. Compared with group S, patients in group P exhibited a greater increase in their MMSE values 24 hours postoperatively. Patients who had their MMSE performance reduced at 24 hours also were significantly fewer in group P (13% v 43% in group S, p<0.05). Significantly lower levels of lactate and S100B were observed in arterial and jugular vein samples in group P. In addition, the jugular vein-arterial differences of malondialdehyde-to-low-density lipoprotein ratio and nitrates + nitrites concentrations were lower during propofol anesthesia. CONCLUSIONS Propofol seemed to improve cognitive performance after CEA. This improvement was associated with decreased indices of ischemic cerebral damage and seemed to be due to antioxidative effect in the ischemic cerebral circulation.
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Affiliation(s)
- Konstantinos Kalimeris
- Second Department of Anesthesiology, School of Medicine, University of Athens, "Attikon" Hospital, Athens, Greece
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Moulakakis KG, Alepaki M, Sfyroeras GS, Antonopoulos CN, Giannakopoulos TG, Kakisis J, Karakitsos P, Liapis CD. The impact of endograft type on inflammatory response after endovascular treatment of abdominal aortic aneurysm. J Vasc Surg 2013; 57:668-77. [DOI: 10.1016/j.jvs.2012.09.034] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2012] [Revised: 08/31/2012] [Accepted: 09/05/2012] [Indexed: 11/26/2022]
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Moulakakis KG, Dalainas I, Kakisis J, Giannakopoulos TG, Liapis CD. Current knowledge on EVAR with the ultra-low profile Ovation Abdominal Stent-graft System. J Cardiovasc Surg (Torino) 2012; 53:427-432. [PMID: 22854522] [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: 06/01/2023]
Abstract
Endovascular aneurysm repair (EVAR) has revolutionized the treatment of infrarenal abdominal aortic aneurysms (AAAs). The continuous collaboration of surgeons and bioengineers in the improvement of the devices the last two decades, lead to a continuous redesigning and improvement of the various endografts. In the last few years, the majority of companies have developed renewed models of grafts and have modified delivery systems tending to lower profile in order to deal with difficult anatomies. The ultra low profile 14F OD Ovation (Trivascular) Abdominal Stent-graft System with innovative sealing technology achieved through inflatable sealing rings, allows treatment of AAAs with small in diameter access vessels that might be unsuitable for EVAR with other currently available stent-grafts. The aim of the present paper was to analyze the technical characteristics and properties of this endograft and to review the current literature.
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Affiliation(s)
- K G Moulakakis
- Department of Vascular Surgery, Medical School, University of Athens, Greece
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Moulakakis KG, Alepaki M, Sfyroeras GS, Giannakopoulos TG, Antonopoulos CN, Kakisis J, Papapetrou A, Karakitsos P, Liapis CD. RR20. Inflammatory Response following Endovascular Treatment of Abdominal Aortic Aneurysm: Impact of Endograft Type. J Vasc Surg 2012. [DOI: 10.1016/j.jvs.2012.03.229] [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]
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Brountzos EN, Moulakakis KG, D. Avgerinos E, Dalainas I, G. Giannakopoulos T, Kakisis J, Ptohis ND, Preza O, Liapis CD. Retrograde Transpopliteal Approach of Iliofemoral Lesions. Vasc Endovascular Surg 2011; 45:646-50. [DOI: 10.1177/1538574411414308] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Purpose: Aim of this study is to present our initial experience with the use of the retrograde popliteal artery access in patients with certain anatomic lesions. Methods: Between September 2008 and September 2010, 24 patients underwent a transpopliteal retrograde subintimal recanalization. Instead of its usage when antegrade recanalization failed, the “facedown” technique was preferred as a first choice in patients with common femoral artery stenosis or occlusion, proximal lesions of the superficial femoral artery (SFA) with no stump, severe obesity, tandem iliac, and SFA lesions. Results: Technical success was achieved in 91.7% of patients.The complication rate was 12.5%. The primary patency at 6, 12, and 18 months was 86.4%, 65.8%, and 65.8%, respectively. Conclusions: The retrograde popliteal artery approach can be considered as the primary SFA recanalization strategy in carefully selected patients, with competitive immediate and midterm results.
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Affiliation(s)
- Elias N. Brountzos
- Department of Radiology, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Konstantinos G. Moulakakis
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Efthimios D. Avgerinos
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Ilias Dalainas
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | | | - John Kakisis
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Nikolaos D. Ptohis
- Department of Radiology, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Ourania Preza
- Department of Radiology, Athens University Medical School, Attikon University Hospital, Athens, Greece
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
| | - Christos D. Liapis
- Department of Vascular Surgery, Athens University Medical School, Attikon University Hospital, Athens, Greece
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Avgerinos ED, Dalainas I, Kakisis J, Moulakakis K, Giannakopoulos T, Liapis CD. Endograft Accommodation on the Aortic Bifurcation:An Overview of Anatomical Fixation and Implications for Long-term Stent-Graft Stability. J Endovasc Ther 2011; 18:462-70. [DOI: 10.1583/11-3411.1] [Citation(s) in RCA: 10] [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] [Indexed: 10/17/2022]
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Peroulis M, Kakisis J, Kapelouzou A, Giagini A, Giaglis S, Mantziaras G, Kostomitsopoulos N, Karayannacos P, Macheras A. The Role of ex-vivo Gene Therapy of Vein Grafts with Egr-1 Decoy in the Suppression of Intimal Hyperplasia. J Vasc Surg 2010. [DOI: 10.1016/j.jvs.2010.06.095] [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: 11/28/2022]
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Lazaris AM, Martikos G, Kapelouzou A, Pavlaki K, Peroulis M, Kakisis J, Vasdekis S, Karagiannakos P, Karatzas G, Maheras A, Kostakis A, Liakakos T. PS218. Effect of Remote Ischemic Preconditioning in Liver Ischemia—Reperfusion Injury Produced by Supraceliac Aortic Cross-clamping in a Swine Model of Open Repair of Thoracoabdominal Aortic Aneurysm. J Vasc Surg 2010. [DOI: 10.1016/j.jvs.2010.02.195] [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]
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Misiakos EP, Karatzas G, Macheras A, Bistarakis D, Kakisis J, Brountzos EN, Liakakos T. Laparoscopic cholecystectomy after open cholecystostomy for gallbladder empyema: a case report. J Laparoendosc Adv Surg Tech A 2007; 17:655-8. [PMID: 17907982 DOI: 10.1089/lap.2006.0179] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The case of a patient with gallbladder empyema initially drained through a minilaparotomy procedure under local anesthesia with a tube cholecystostomy is reported in this paper. Eight weeks later, the patient underwent an elective interval laparoscopic cholecystectomy. At laparoscopy, the gallbladder and the cholecystostomy tube were dissected free from the abdominal wall and the greater omentum, which was attached to the gallbladder. The tube was removed from the gallbladder fundus, and the operation was completed laparoscopically without any major problems.
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Affiliation(s)
- Evangelos P Misiakos
- 3rd Department of Surgery, University of Athens School of Medicine, Attikon University Hospital, Athens, Greece.
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Theocharis S, Giaginis C, Parasi A, Margeli A, Kakisis J, Agapitos E, Kouraklis G. Expression of peroxisome proliferator-activated receptor-gamma in colon cancer: correlation with histopathological parameters, cell cycle-related molecules, and patients' survival. Dig Dis Sci 2007; 52:2305-11. [PMID: 17393321 DOI: 10.1007/s10620-007-9794-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2006] [Accepted: 01/29/2007] [Indexed: 12/31/2022]
Abstract
Peroxisome proliferator-activated receptor gamma (PPAR-gamma), a ligand-activated transcription factor, is a key regulator of adipogenic differentiation and glucose homeostasis. PPAR-gamma ligands have recently been demonstrated to affect proliferation and differentiation in cancer cells lines. The aim of the present work was to examine PPAR-gamma expression in colon cancer cases. PPAR-gamma expression was examined immunohistochemically in 86 colon cancer cases and was correlated with clinicopathological parameters, tumor proliferative capacity, cell cycle-related molecule expression, and patient survival. Positive PPAR-gamma immunostaining was prominent in 48 of 86 cases (56%). PPAR-gamma positivity was not correlated with Dukes' stage, histological grade of differentiation, lymph node and liver metastasis, venous invasion, tumor proliferative capacity, or patient survival. A statistically significant correlation was found between PPAR-gamma and the expression of cell cycle-related molecules pRb (P < 0.016), cyclin D1 (P <0.009), p16 (P<0.032), and p21 (P<0.033), while a positive trend for cyclin E was also noted (P<0.057). The pattern, intensity, and extent of PPAR-gamma expression in positive cases were not correlated with any of the examined variables. Our findings support evidence for participation of this protein in the biological mechanisms underlying carcinogenic evolution in the colon, also suggesting the importance of specific PPAR-gamma ligands as cell cycle modulators for a future therapeutic approach in colon cancer.
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Affiliation(s)
- Stamatios Theocharis
- Department of Forensic Medicine and Toxicology, Medical School, University of Athens, 75 M. Asias str., Goudi, GR11527, Athens, Greece.
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Zavos G, Kakisis J, Bokos J, Pappas P, Boletis J, Kostakis A. De novo Renal Cell Carcinoma in a Kidney Allograft 13 Years after Transplantation: A Case Report and Review of the Literature. Urol Int 2007; 78:283-5. [PMID: 17406143 DOI: 10.1159/000099354] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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: 01/20/2023]
Abstract
De novo carcinoma of the renal transplant is a rare but disastrous clinical entity. We report such a tumor developing 13 years after transplantation and describe its clinical presentation, diagnostic approach and therapy. The importance of a surveillance program allowing early detection of tumor developing in the renal transplant is emphasized.
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Affiliation(s)
- George Zavos
- Transplantation Unit, Laikon Hospital, Athens, Greece.
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