Hasan Ahmad

University of Huddersfield · Department of Leadership and Management

Background We describe a technique to assess blood flow distal to the decannulation site after deployment of Perclose ProGlide (Abbott Vascular, Abbott Park, Ill) in patients on femoral veno-arterial extracorporeal membrane oxygenation (VA-ECMO) support. Technique An antegrade distal perfusion catheter was placed in all patients, and decannulation...

Background: Valve reintervention after transcatheter aortic valve replacement (TAVR) failure has not been studied in detail. Objectives: The authors sought to determine outcomes of TAVR surgical explantation (TAVR-explant) vs redo-TAVR because they are largely unknown. Methods: From May 2009 to February 2022, 396 patients in the international...

Background: Transcatheter aortic valve replacement (TAVR)-related coronary artery obstruction prediction remains unsatisfactory despite high mortality and novel preventive therapies. Objectives: This study sought to develop a predictive model for TAVR-related coronary obstruction in native aortic stenosis. Methods: Preprocedure computed tomogr...

Background: With the growing population of advanced heart failure, the use of Impella 5.5 has been increasing. Here, we report an effective strategy of removing the intra-aortic balloon pump (IABP) in the setting of escalation of support to Impella 5.5. Results: From January 1, 2022 to June 30, 2022, a total of 6 patients have undergone IABP remova...

Peripheral artery disease affects millions of people worldwide, and it is associated with significantly higher morbidity and mortality. In addition, it represents a significant challenge for the interventional operators to appropriately and successfully revascularize heavily calcified stenoses. There are several established atherectomy devices with...

Background: Paravalvular regurgitation (PVR) may be missed intraoperatively with transthoracic echocardiography (TTE) guided minimalist TAVR. We sought to determine the incidence and echocardiographic distribution of PVR missed on intra-op TTE, but detected on predischarge TTE. Methods: From July 2015 to 2020, 475 patients with symptomatic sever...

Coronary artery calcification is strongly associated with adverse cardiac events and can impede the success of percutaneous coronary intervention (PCI) due to challenges with delivery of equipment and expansion of stents. Current treatment modalities for mitigation of coronary calcification have limitations and inherent risk of complications. Coron...

Introduction: Transcatheter mitral valve repair (TMVR) has evolved over the years, and early discharge strategies are being increasingly adopted. However, there is paucity of data on the outcomes and safety of same-day discharge (SDD) after TMVR. Methods: Data from the Nationwide Readmissions Database 2014 to 2019 were analyzed. International Class...

Background: The development or progression of aortic insufficiency (AI) to moderate to severe in patients with left ventricular assist devices (LVADs) for end stage heart failure has been increasingly recognized and occurs in 30-40% of patients with continuous flow LVADs. This can lead to reduced efficiency of the LVAD and is associated with increa...

A 26-year-old woman presented at 26 weeks of pregnancy with severe mitral regurgitation (MR) and cardiogenic shock in the setting of profound hyperthyroidism. An intra-aortic balloon pump was placed, and surgical intervention was considered. However, with management of thyrotoxicosis and delivery, complete resolution of MR and cardiogenic shock was...

Transcatheter aortic valve replacement (TAVR) has become an established alternative to surgical aortic valve replacement for high-, intermediate-, and low-risk patients. Paravalvular leak (PVL) is a complication of TAVR that can be effectively treated with balloon dilation and vascular plugs. We report a case of an 86-year-old male presenting with...

The length of hospital stay after transcatheter aortic valve implantation (TAVI) has decreased over the years, and next-day discharge is being increasingly adopted in clinical practice. Whether further expediting discharge after TAVI by allowing same-day discharge (SDD) in selected patients is safe or derives additional benefits remains unanswered....

Percutaneous catheter-directed interventions for pulmonary embolism is a rapidly evolving field. We present the first case report of simultaneous intravascular ultrasound (IVUS) use during transcatheter pulmonary embolectomy. Real-time IVUS guidance offers the advantage of better clot visualization and precise suction catheter localization while mi...

Background Clopidogrel is the most frequently used P2Y12 inhibitor as a component of the dual antiplatelet regimen in patients with acute coronary syndrome (ACS) undergoing percutaneous coronary intervention (PCI). Prior studies have shown the variable efficacy of clopidogrel due to genotypic differences in the CYP2C19 enzyme function, which conver...

Precise and accurate characterization of the aortic valve complex is a vital step in the procedure planning for transcatheter aortic valve replacement (TAVR). Far-field intravascular ultrasound (IVUS) is a novel technology that can be utilized to assess aortic valve annulus and predict paravalvular leak, with comparable results to multi-detector co...

This study aimed to separately examine the mediator role of two different variables in the relationship between perceived motivational climate and personal-social responsibility in physical education lessons. A total of 406 students ( M age = 12.91, SD = 1.01), 217 girls ( M age = 12.88, SD = 1.03) and 189 boys ( M age = 12.93, SD = 0.99), from the...

Introduction: Clopidogrel is the most frequently used P2Y12 inhibitor as a component of the dual antiplatelet regimen in patients with acute coronary syndrome (ACS) undergoing percutaneous coronary intervention (PCI). Prior studies have shown the variable efficacy of clopidogrel due to genotypic differences in the CYP2C19 enzyme function, which con...

The evidence regarding the impact of cerebral embolic protection devices (EPDs) on outcomes following transcatheter aortic valve replacement (TAVR) is limited. The objective of this study was to evaluate in-hospital outcomes with the use of cerebral EPDs in TAVR. We performed a comprehensive EMBASE and PUBMED search to investigate randomized contro...

Purpose: Effective platelet inhibition prior to elective percutaneous coronary intervention (PCI) reduces the risk of ischemic complications. Newer P2Y12 inhibitors are preferred agents over clopidogrel for patients presenting with the acute coronary syndrome. However, the comparative efficacy and safety of them over clopidogrel in elective PCI is...

Objectives: The aim of this study was to evaluate clinical characteristics, mechanisms of failure, and outcomes of transcatheter aortic valve replacement (TAVR) explantation. Background: Surgical explantation following TAVR may be required for structural valve degeneration, paravalvular leak, infection, or other reasons. However, in-depth data o...

Background It is controversial that cerebral embolic protection devices (CEPDs) reduce clinical stroke during transcatheter aortic valve replacement (TAVR). Herein, we investigated the impact of CEPDs on in-hospital clinical stroke using a nationally representative sample. Methods and Results. Using the National Inpatient Sample (NIS) database, 109...

Background Urgent transcatheter aortic valve implantation (TAVI) is a feasible option for aortic stenosis (AS) patients with decompensated heart failure (HF) and cardiogenic shock (CS) as compared to the more traditional urgent balloon aortic valvuloplasty (BAV). Objectives We conducted a retrospective analysis to compare risk and cause of readmis...

Background The association of obesity on outcomes in patients with cardiogenic shock requiring acute mechanical circulatory support has not been thoroughly investigated. Methods We evaluated the National Readmission Database for adults with either acute myocardial infarction or heart failure complicated by cardiogenic shock requiring acute mechani...

Clinical outcomes of transcatheter aortic valve implantation (TAVI) have significantly improved with the accumulation of operator and institution experience as well as the wide use of newer generation devices. There is limited data on TAVI outcomes compared with surgical aortic valve replacement (SAVR) in contemporary practice in the United States....

Background: The first aim of this study is to achieve validation of the direct and meta-perspective versions of the Coach–Athlete Relationship Questionnaire in the Arabic language, and the second aim of this study is to determine the quality of the coach-athlete relationship to athlete’ satisfaction with individual performance according to sport pa...

Background: Within the 3Cs (closeness, commitment, and complementarity) theoretical framework of the quality of two-person relationships, a coach–athlete relationship quality questionnaire (CART-Q) was developed and validated to assess the nature of the coach–athlete relationship. In this study, a modified version of the CART-Q for physical educati...

BACKGROUND Patients with a history of percutaneous coronary intervention (PCI) are at increased risk for ischemic events despite statin therapy. METHODS In a multicenter, double-blind, placebo-controlled trial, statin-treated patients with triglycerides of 135 to 499 mg/dl, controlled low-density lipoprotein (41 to 100 mg/dl), and either establishe...

Since the first native transcatheter mitral valve implantation in 2012, transcatheter mitral valve replacement (TMVR) has expanded its use to degenerated bioprostheses, failed annuloplasty ring repair, and mitral annular calcification. However, high screen failure rates in trials have persisted due to predicted left ventricular outflow tract (LVOT)...

Background: Currently, 2 third-generation transcatheter valves, 29-mm Sapien-3 and 34-mm Evolut-R (ER), are indicated for large sized aortic annuli. We analyzed short and 1-year performance of these valves in patients with large (area ≥575 mm2 or perimeter ≥85 mm) and extra-large (≥683 mm2 or ≥94.2 mm) aortic annuli undergoing transcatheter aortic...

Background We aimed to compare the safety and efficacy of transradial vs transfemoral access for coronary angiography and intervention in patients presenting with ST-segment elevation myocardial infarction (STEMI) without cardiogenic shock. Methods PubMed, Embase and Cochrane Central were searched for randomized controlled trials (RCTs) comparing...

The transcatheter aortic valve replacement (TAVR) procedure provides a way to treat severe aortic stenosis in the large population of patients who are not candidates for surgical aortic valve replacement (SAVR). Mitral regurgitation is often concomitant to aortic stenosis in these patients due to the high pressure of the left ventricle and long-ter...

Background The healthcare burden posed by the coronavirus disease 2019 (COVID‐19) pandemic in the New York Metropolitan area has necessitated the postponement of elective procedures resulting in a marked reduction in cardiac catheterization laboratory (CCL) volumes with a potential to impact interventional cardiology (IC) fellowship training. Meth...

With aging population and preponderance of severe aortic stenosis occurring in elderly patients, the number of transcatheter aortic valve implantations (TAVI) performed in the elderly are growing. Frailty is common in the elderly and is known to be associated with worse outcomes. We aimed to evaluate the impact of frailty on hospital readmissions r...

Objectives The aim of this study was to assess the value of echocardiographic right ventricular (RV) and systolic pulmonary artery pressure (sPAP) assessment in predicting transcatheter tricuspid edge-to-edge valve repair (TTVR) outcome. Background RV dysfunction and pulmonary hypertension are associated with poor prognosis and are systematically...

Objectives The aim of this study was to evaluate the impact of initial deployment orientation of SAPIEN 3, Evolut, and ACURATE-neo transcatheter heart valves on their final orientation and neocommissural overlap with coronary arteries. Background Coronary artery access and redo transcatheter aortic valve replacement (TAVR) following initial TAVR m...

Valve-in-valve (ViV) transcatheter aortic valve implantation (TAVI) for a failing prosthesis is an appealing alternative to redo surgical AVR. We utilized data from the US National Inpatient Sample for the period 2012 to 2016 to identify hospitalizations for either ViV-TAVI or redo-SAVR. The primary outcomes of interest were in-hospital adverse eve...

New persistent left bundle branch block (NP-LBBB) has been associated with adverse outcomes after TAVI but few predictors thus far reported. We sought to identify predictors of NP-LBBB after TAVI with EvolutR/PRO (ER/EP). From 1/2016 to 4/2019, 544 patients from 2 centers underwent TAVI with Evolut (54% ER, 46% EP) for severe native aortic stenosis...

Background: Transcatheter aortic valve replacement (TAVR) for the treatment symptomatic severe aortic stenosis (AS) is indicated in patients with intermediate or higher surgical risk. Latest trials showed TAVR, and surgical aortic valve replacement (SAVR) perform similarly at 1-year for the composite outcomes of mortality, stroke and rehospitaliza...

Transcatheter mitral valve repair (TMVR) has shown comparable outcomes to surgical mitral valve replacement or repair (SMVR) in patients who are at a higher risk of surgical complications and therefore are not amenable to surgery. Elderly patients are considered poor surgical candidates due to their advanced age, and presence of comorbidities. A su...

Objectives: The aim of this study was to report the 1-year results of transcatheter aortic valve replacement (TAVR) with the Edwards SAPIEN 3 (S3) valve in extremely large annuli. Background: Favorable 30-day outcomes of S3 TAVR in annuli >683 mm2 have previously been reported. Pacemaker implantation rates were acceptable, and a larger left vent...

Objectives: The purpose of this study was to evaluate procedural and 1-year clinical and echocardiographic outcomes of patients treated with tricuspid edge-to-edge repair. Background: Transcatheter edge-to-edge repair has been successfully performed in selected patients with symptomatic tricuspid regurgitation (TR) and high risk for surgery, but...