Publications by authors named "John Kakisis"

Endovascular stent grafting is becoming more common in treating complex thoracic aortic aneurysms and dissections. When it becomes necessary to cover the supra-aortic vessels, maintaining blood supply through the supra-aortic branches can be achieved by performing in situ needle fenestration. We present a case of a 65-year-old man with a type B aortic dissection that extended from the origin of the left subclavian artery.

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Article Synopsis
  • - Post Implantation Syndrome (PIS) affects some patients after endovascular aortic repair (EVAR), with a study of 76 patients revealing that 22% developed PIS, while the rest did not, indicating a potential link to systemic inflammatory response syndrome (SIRS).
  • - The study compared various factors, including platelet count and thrombus volume, between PIS and non-PIS groups; results showed higher baseline platelet counts and larger drops in platelet counts among PIS patients but no significant differences in aneurysm volumes.
  • - The findings suggest that platelets are key indicators for developing PIS post-EVAR, highlighting the need for further research to clarify the relationship between platelets and thrombus volumes in this context
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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.

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It has been documented that large-artery stiffness is independently associated with increased cardiovascular risk and may potentially lead to heart and kidney failure and cerebrovascular disease. A systematic review of studies investigating changes in arterial stiffness in patients undergoing endovascular repair of aortic disease was conducted. In addition, a review of the available literature was performed, analyzing findings from studies using the cardio-ankle vascular index (CAVI) as a marker of arterial stiffness.

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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.

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Article Synopsis
  • The study aimed to compare the outcomes of two treatment methods for abdominal aortic aneurysm (AAA) in younger patients: endovascular repair (EVAR) and open repair.
  • A systematic review of 15 observational studies and 1 randomized controlled trial was conducted, involving nearly 49,000 young patients, with the risk of bias assessed through established frameworks.
  • Results indicated that while EVAR had lower perioperative mortality and shorter hospital stays, overall and aneurysm-related mortality rates were not significantly different between the two methods, and complications were generally lower with EVAR as well.
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Background:  Coarctation of the aorta (CoA) is a congenital cardiovascular malformation involving narrowing of the thoracic aorta just distal to the left subclavian artery. The aim of our study was to evaluate the hemodynamic effects of endovascular treatment for CoA by using invasive aortic catheterization.

Methods:  All patients with CoA who underwent treatment by aortic stent implantation between September 1, 2003, and February 1, 2019, at the "Onassis Cardiac Surgery Center," in Athens, Greece, were evaluated.

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Arterial stiffness and its valid index, the cardio-ankle vascular index (CAVI), have emerged as predictors of adverse cardiovascular outcomes. We investigated the relationship of the CAVI with significant carotid stenosis (> 50%) and the related cerebrovascular symptoms or carotid plaque echogenicity, assessed by ultrasound gray-scale median (GSM) score, at baseline and after carotid artery stenting (CAS). We prospectively enrolled 113 patients with carotid stenosis (70-99% for asymptomatic and > 50% for symptomatic participants) eligible for CAS.

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Introduction: Aortic graft infection remains a considerable clinical challenge, and it is unclear which variables are associated with adverse outcomes among patients undergoing partial resection.

Methods: A retrospective, multi-institutional study of patients who underwent partial resection of infected aortic grafts from 2002 to 2014 was performed using a standard database. Baseline demographics, comorbidities, operative, and postoperative variables were recorded.

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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.

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Preservation of the hypogastric circulation is of major clinical importance in cases of endovascular aneurysm repair (EVAR) for ruptured abdominal aortic aneurysm (rAAA). Pelvic ischemia can be detrimental and significantly increase post-operative morbidity and mortality. However, the application of a side branch device or a bell-bottom graft is not possible in ruptured aortoiliac aneurysms (due to off-the-shelf unavailability and/or prolonged operative time) and in most cases pelvic circulation may have to be sacrificed.

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Abdominal wall hernias (AWHs) share common epidemiological characteristics with abdominal aortic aneurysms (AAAs), typically presenting in male population and older ages. Prior reports have associated those two disease entities. Our objective was to perform a systematic review and meta-analysis and examine whether AAA rates are higher among patients with AWH vs controls and whether the incidence of AWH was higher among patients with AAA vs patients without AAA.

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Background:  Aortic neck wall rupture during endovascular repair of abdominal aortic aneurysms (EVAR) is an underreported potentially fatal complication. Only a few cases have been reported. The main cause of this complication is repeated attempts at balloon inflation or overdilation to treat an intraoperative Type 1a endoleak.

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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).

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Objective: The optimal revascularization modality in secondary aortoenteric fistula (SAEF) remains unclear in the literature. The purpose of this investigation was to determine the revascularization approach associated with the lowest morbidity and mortality using real-world data in patients with SAEF.

Methods: A retrospective, multi-institutional study of SAEF from 2002 to 2014 was performed using a standardized database.

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Objective: Transcervical carotid artery stenting (CAS) has emerged as an alternative to transfemoral CAS. An earlier systematic review from our group (n = 12 studies; 739 transcervical CAS procedures [489/739 with flow reversal]) demonstrated that transcervical CAS is a safe procedure associated with a low incidence of stroke and complications. Since then, new studies have been published adding nearly 1600 patients to the literature.

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Pulse wave velocity (PWV) is a valid, clinically feasible marker of arterial stiffening, and a strong predictor of outcomes. 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. A total of 130 patients with AAA, eligible for interventional repair, and 30 healthy individuals, comprising the control group (HC), were enrolled.

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