Cardiac Arrhythmia clinical trials at UCSD
4 in progress, 1 open to new patients

  • AV Delay Optimization vs. Intrinsic Conduction in Pacemaker Patients With Long PR Intervals

    open to eligible people ages 18 years and up

    This is a randomized, prospective clinical trial to determine the effects of two different pacemaker atrioventricular delay (AV delay) settings on heart function in patients with dual chamber pacemakers implanted for symptomatic bradycardia with long PR intervals (delayed conduction between upper and lower chambers of the heart). The study will compare a long, fixed AV delay (standard) with an optimized AV delay for each individual using echocardiography (experimental).

    La Jolla, California

  • Effectiveness Study of Circumferential vs. Segmental Ablation in Paroxysmal Atrial Fibrillation

    Sorry, in progress, not accepting new patients

    This is a PI-initiated study that aims to evaluate the efficacy of two different methods of paroxysmal atrial fibrillation (PAF) ablation. There are currently two strategies for PAF ablation that are routinely performed by electrophysiology clinicians: (1) circumferential pulmonary vein ablation (CPVA) and (2) segmental pulmonary vein isolation (SPVI). However, it is not known if one approach is better than the other. This randomized study will evaluate and compare the efficacy of CPVA versus SPVI in subjects undergoing ablation for paroxysmal atrial fibrillation only. Subjects will have a 50/50 chance of receiving either the CPVA or SPVI ablation method.

    La Jolla, California

  • Inhibition of Atrial Fibrillation by Elimination of Transitional Mechanisms

    Sorry, not yet accepting patients

    There is growing awareness of the importance of electrical rotors to the maintenance of atrial fibrillation (AF). Recent work in our laboratory has found that AF evolves over time, from rapid, focal activation, next to transitional rotors, and finally to stable, long duration rotors, whose locations are frequently separate from the transitional rotor sites. This project will test the hypothesis that mapping and ablation of the transitional rotors sites may prevent atrial fibrillation from progressing to sustained atrial fibrillation, and therefore increase the AF initiation threshold. The investigators will test this hypothesis during clinically-indicated electrophysiology study prior to ablation of symptomatic AF.

    La Jolla, California

  • Pharmacokinetics of Understudied Drugs Administered to Children Per Standard of Care

    Sorry, not currently recruiting here

    Understudied drugs will be administered to children per standard of care as prescribed by their treating caregiver and only biological sample collection during the time of drug administration will be involved. A total of approximately 7000 children aged <21 years who are receiving these drugs for standard of care will be enrolled and will be followed for up a maximum of 90 days. The goal of this study is to characterize the pharmacokinetics of understudied drugs for which specific dosing recommendations and safety data are lacking. The prescribing of drugs to children will not be part of this protocol. Taking advantage of procedures done as part of routine medical care (i.e. blood draws) this study will serve as a tool to better understand drug exposure in children receiving these drugs per standard of care. The data collected through this initiative will also provide valuable pharmacokinetic and dosing information of drugs in different pediatric age groups as well as special pediatric populations (i.e. obese).

    La Jolla, California and other locations

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