Samir Ahad

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BACKGROUND Chronic kidney disease is a significant risk factor for mortality as well as acute kidney injury in cardiac surgery. The impact of contrast agent application on outcome is not well described in patients undergoing transcatheter aortic valve implantation. METHODS We analyzed data of 270 patients who underwent transcatheter aortic valve(More)
Transcatheter aortic valve implantation (TAVI) has gained increasing popularity for high-risk patients with symptomatic aortic valve stenosis. A concomitant coronary artery disease leads to a complicated management and an increased perioperative risk. This case report describes the successful total arterial coronary revascularization of the left anterior(More)
BACKGROUND Valve-sparing aortic root replacement has already proven its excellent long-term results, with low valve-related complications comparable with conventional aortic valve replacement. The aim of this study was to investigate whether additional expanded cusp repair is an alternative with comparable results. METHODS Data of 192 elective patients(More)
Background The incidence of degenerative aortic valve diseases has increased along with the life expectancy of our population. Although conventional aortic valve replacement (AVR) is the gold standard for symptomatic aortic stenosis, transcatheter procedures have proven to be a valid therapeutic option in high-risk patients. The aim of this study was to(More)
BACKGROUND AND AIM OF THE STUDY Transcatheter procedures are considered the therapy of choice for high-risk patients who are not eligible for surgical aortic valve replacement. Although its utility is debated, the logistic EuroSCORE I is still the most frequently used risk calculator for cardiac surgery in Europe, and was used in the present study to(More)
OBJECTIVES Significant coronary artery disease (CAD) is common among patients evaluated for transcatheter aortic valve implantation (TAVI). Only little data exist on outcome of patients undergoing concomitant off-pump coronary revascularization and TAVI. The goal of this study was to analyse the impact of concomitant off-pump revascularization on early(More)
BACKGROUND Transcatheter aortic valve implantation (TAVI) has proven to be a valid option for patients with severe aortic stenosis who are at high perioperative risk, particularly in patients with previous cardiac surgery. Several patients with previous mitral valve surgery were reported to have been successfully treated with TAVI. CASE PRESENTATION Two(More)
Objectives This study aims to examine the feasibility and clinical course after minimally invasive David procedure compared with those via a conventional median sternotomy. Methods One hundred and ninety-two consecutive patients who underwent elective valve-sparing aortic root replacement (David procedure) with or without additional cusp repair for aortic(More)
An increasing number of patients with severe aortic stenosis and concomitant critical coronary artery disease were referred to our hospital. Some of those patients were classified as high-risk patients qualifying for a transcatheter therapy with the additional need for coronary revascularization. As a consequence of their comorbidities, the established(More)
BACKGROUND Minimally invasive extracorporeal circulation (MECC) is predominantly used in coronary operations. Data supporting the benefits of MECC in minimally invasive valve operations are still absent. METHODS Patients undergoing either isolated minimally invasive mitral or aortic valve procedures were prospectively randomized to a minimally invasive(More)
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