View clinical trials related to Bradyarrhythmia.
Filter by:The goal of this observational study is to evaluate the clinical characteristics of patients undergoing permanent cardiac pacing and to compare procedural efficacy and safety of different implantation approaches in the clinical practice of the participating centres. The contribution of non-fluoroscopic anatomical and electrophysiological reconstruction systems to device implantation procedures will also be evaluated. Participants [patients over 18 years old with an indication to receive a definitive pacemaker/intracardiac defibrillator implant] will receive a permanent cardiac pacing implant as requested according to European Society of Cardiology (ESC) guidelines; the investigators will evaluate procedural efficacy and safety of different implantation approaches.
Study of the ventricular activation patterns during left bundle area pacing and compare it with baseline activation during normal sinus rhythm in patients with and without baseline bundle branch conduction disorder.
Traditional temporary pacing catheter insertion by intracavitary electrocardiogram (IC-ECG) monitoring which only monitoring tip polar, the negative one. The investigators modified the technique by monitoring both negative and positive polar which will be precisely locating catheter tip and indicating the direction of the catheter tip. Extensively used temporary pacing catheter tip has two electrodes which are about 1 cm apart. Distal electrode is negative (-) and active, proximal electrode is positive (+) and indifferent. Investigators use both distal (-) and proximal (+) electrodes which can be attached to any two of the V leads, record as V(-) and V(+). Monitoring positions of the electrodes by V(-) and V(+) could provide more information about the tip position. Comparing the QRS amplitudes between V(-) and V(+), when catheter tip enters right ventricle chamber: the case of V(-) > V(+) infers tip toward apex ventricle wall ; conversely, the case of V(-)<V(+) indicates tip directs to outflow tract. The investigators hypothesis this monitoring will help precisely placement.
The purpose of this registry study is to collect information about routine clinical practices with device implantation to treat bradycardia and cardiac systolic dysfunction (heart rhythm disorders) across global centers of excellence in cardiac pacing. In particular, this study will examine the use of conduction system pacing (CSP) in clinical practice. Information collected in the registry will help researchers better characterize strengths and limitations of current technology and treatments.
The aim of this study is to evaluate mechanical and electrical cardiac dyssynchrony in patients with pacemakers and the right ventricular electrode implanted in His Bundle area.
FFR-guided PCI has been performed in National Taiwan University Hospital(NTUH) for many years. Nevertheless, the method of FFR measurement in NTUH is different from that in literature. In this study, the investigator would like to evaluate the effectiveness and safety of NTUH experience in FFR prospectively. First, the investigator will record any intracoronary (IC) injected adenosine-related complications, such as bradyarrhythmia or chest discomfort. Second, the investigator will follow up on the clinical outcome of the participants for 2 years, record if any target lesion failure, target vessel failure, target vessel-related myocardial infarction, and cardiac death. Finally, left ventricular diastolic pressure, serum pro-brain natriuretic peptide (pro-BNP), and high sensitivity C- reactive protein (hsCRP) will be checked and determined their relationships with the maximum dosage of IC adenosine.
Bradyarrhythmia, including sinus node dysfunction and atrioventricular block, is a major cause necessitating pacemaker implantation. In contrast to familial bradyarrhythmia known as by mutations at particular ion channels, limited information is available for the mechanistic study in non-familial bradyarrhythmia. Possible gene polymorphisms related to non-familial bradyarrhythmia were studied. Comparison of multi-locus analysis and single-locus analysis will be analyzed between the cases and controls. Functional studies will perform to clarify the results of association study.