Sai Madhukar Vanam

• University of Oklahoma

Background The mechanisms for atrial fibrillation (AF) recurrence after pulmonary vein isolation (PVI) catheter ablation are unclear. Non-PV organized atrial arrhythmias (PAC, AT, macro-reentrant AFL) are possible contributors; however the prevalence and effect of their ablation on recurrent AF are unknown. We hypothesize that the identification an...

Background: We aimed to evaluate for occult systolic dysfunction and the effect of methamphetamine cessation among patients with methamphetamine use (MU) and heart failure with preserved ejection fraction (HFpEF). Methods: A retrospective cohort of patients with HFpEF with serial echocardiograms was stratified by MU and evaluated using myocardial s...

Introduction: Stereotactic ablative radiotherapy is a promising therapy for ventricular tachycardia (VT), but the formation of gastro-pericardial fistula is a serious complication associated with this procedure. The proximity of the stomach to the heart has not been well characterized. Hypothesis: We hypothesized that the stomach is located in clos...

Introduction: Stereotactic ablative radiotherapy is an emerging therapy for ventricular tachycardia (VT), but it is unknown whether its precision may be limited by cardiac motion from the beating heart. Hypothesis: The magnitude of cardiac contractile motion may vary between patients and across different directions in 3D. Methods: Patients who unde...

Background: Pulmonary Thromboendarterectomy (PTE) is a specialized cardiac surgery for treating chronic thromboembolic pulmonary hypertension (CTEPH). Sinus node dysfunction is seen in this population as patients often require epicardial pacing after cardiac surgeries. We aimed to define the incidence, predictors, and outcomes of sinus node dysfunc...

Background: Atrial arrhythmias (AA) are common after cardiac surgeries including pulmonary thromboendarterectomy (PTE) surgery. However, the arrhythmia classification, treatment and impact of these AA after PTE surgery is unclear. Hypothesis: We hypothesized that most AA after PTE are paroxysmal and have a significant impact on post-operative outc...

Background: Chronic thromboembolic pulmonary hypertension (CTEPH) is a rare and progressive subtype of severe pulmonary hypertension. Premature ventricular contractions (PVC) are common and can be a marker of cardiomyopathy. We aimed to describe the incidence, location and predictors of PVCs in CTEPH patients undergoing Pulmonary Thromboendarterect...

Background Left atrial appendage occlusion (LAAO) has emerged as an alternative strategy to oral anticoagulation for mitigating ischemic stroke risk in selected patients with atrial fibrillation (AF), but safety data in patients with significant kidney disease are limited. Objective To determine the association of chronic (CKD) and end-stage renal...