This case report describes abrupt heart rate fallings below the lower pacing rate limit in a patient with cardiac resynchronization therapy (CRT). Interrogated information including stored episodes or data regarding the lead did not show any device problems and only simultaneous intracardiac electrogram revealed the cause, T-wave oversensing during biventricular pacing. At this moment, CRT has become an established modality for patients with severe heart failure. However, bradycardia below the lower rate limit during biventricular pacing due to T-wave oversensing would exacerbate heart failure in patients with CRT. We should notice this latent risk and correct the malfunction immediately.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1111/j.1540-8159.2010.02855.x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Early Improvement in Cardiac Function and Dyssynchrony After Physiological Upgrading in Pacing-Induced Cardiomyopathy.
Pacing Clin Electrophysiol
December 2024
Arrhythmia Unit, Department of Cardiology, Hospital Juan Ramón Jiménez, Huelva, Spain.
Background: Interventricular dyssynchrony derived from the classic non-physiological stimulation (n-PS) of the right ventricle (RV) is a known cause of left ventricular dysfunction (LVDys).
Methods: This was a prospective descriptive single-center study. We analyzed patients who develop LVDys with n-PS, and the results after upgrading to conduction system pacing (CSP).
Double-barrel coronary sinus: a rare anomaly unveiled during cardiac resynchronization therapy.
Coron Artery Dis
October 2024
Department of Cardiology, Kocaeli City Hospital, Kocaeli, Turkey.
Addressing Functional Mitral Regurgitation in Dilated Cardiomyopathy: A Focus on Myocardial Segment Resynchronization Through Cardiac Resynchronization Therapy.
Cureus
November 2024
Department of Cardiology, Liv Hospital Ulus, Istanbul, TUR.
Article Synopsis
- Cardiac resynchronization therapy (CRT) improves functional mitral regurgitation (FMR) by coordinating heart muscle segments, especially between papillary muscles, beyond just boosting left ventricular (LV) performance.
- Eighteen patients with dilated cardiomyopathy underwent tests to measure heart function, and biventricular pacing showed a significant reduction in mitral regurgitation despite some patients showing no change in LV pressure.
- The study concludes that CRT effectively lowers FMR independently of LV systolic function improvements, highlighting the importance of understanding its mechanisms for better treatment outcomes.
Real-world outcomes in cardiac resynchronization therapy patients: Primary results of the SMART registry.
ESC Heart Fail
December 2024
Boston Scientific Corporation, St. Paul, Minnesota, USA.
Article Synopsis
- Cardiac resynchronization therapy (CRT) is effective for treating heart failure but is under-researched in patients with common comorbidities like atrial fibrillation (AF).
- The SMART registry enrolled 2035 patients to assess CRT response based on clinical outcomes over 12 months, focusing on factors like all-cause mortality, hospitalizations, and quality of life.
- Results showed 58.9% of patients improved, but factors like age, AF, and diabetes were linked to lower CRT responsiveness, with patients having AF experiencing higher rates of hospitalizations and mortality compared to those in normal rhythm.
Deep Septal Pacing for Pacemaker-Induced Cardiomyopathy.
Pacing Clin Electrophysiol
December 2024
Servei de Cardiologia, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Barcelona, España.
Introduction: Right ventricular (RV) pacing can impair left ventricular function and cause heart failure, known as pacing-induced cardiomyopathy (PICM). Upgrade to cardiac resynchronization (CRT) is its usual treatment; recently left bundle branch area pacing (LBBAP) has emerged as a potential alternative. Deep septal pacing (DSP), a simplified alternative to LBBAP, is still able to achieve narrower paced QRS than during conventional RV pacing.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!