This report describes the de novo occurrence of pacemaker-mediated tachycardia (PMT) in a patient with a dual-chamber implantable cardioverter-defibrillator and stable retrograde ventriculoatrial conduction time. The same rate-adaptive post-ventricular atrial refractory period (PVARP) duration had previously prevented PMT. Oversensing of atrial false signals from a defective lead shortened the PVARP with consequent sensing of retrograde conduction.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1093/europace/eur405 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Introducing a Novel Pacemaker-Mediated Arrhythmia: The Pseudo-RNRVAS Arising From Atrial Capture Challenges.
Ann Noninvasive Electrocardiol
November 2024
Ankara Guven Hospital, Ankara, Turkey.
Article Synopsis
- The study explores a new type of heart rhythm issue called pseudo-RNRVAS that occurs when atrial stimulation stops while there is continued communication between the ventricles and atrium during certain heart phases.
- Researchers investigated 21 patients with cardiac devices, finding that 20 experienced pseudo-RNRVAS, particularly at lower heart rates and specific timing intervals after losing atrial capture.
- The findings suggest that pseudo-RNRVAS can happen without the usual risk factors and are more likely in scenarios that increase atrial pacing, especially soon after pacemaker implantation, indicating a possible link to pacemaker syndrome and heart failure risk.
Unique Tachycardia Recorded on a Cardiac Implantable Electronic Device: What is the Mechanism?
Pacing Clin Electrophysiol
December 2024
Department of Cardiology, Soka Municipal Hospital, Soka, Japan.
Article Synopsis
- A 55-year-old man with nonischemic cardiomyopathy experienced a unique tachycardia recorded by an implantable cardioverter defibrillator, raising concerns about its identification and management.
- The report outlines how to differentiate this type of tachycardia from similar heart rhythms and discusses the clinical implications related to patient care.
- It also highlights the limitations of the device in handling these tachycardias and suggests reprogramming strategies to reduce the chances of recurrence, stressing the need for thorough analysis of device-related arrhythmias.
Endless loop tachycardia among patients with devices having advanced preventive algorithms: A case series and brief review.
Pacing Clin Electrophysiol
September 2024
Department of Cardiology, RTIICS, Kolkata, India.
Article Synopsis
- Endless loop tachycardia (ELT) is a frequent issue in patients with implanted cardiac devices and can cause serious symptoms despite preventive measures.
- * A study analyzed 20 cases of sustained ELT from 4,520 device checkups over four years, finding it usually benign but occasionally harmful, particularly in patients with left ventricular dysfunction.
- * Various factors contributed to ELT, including improper AV synchrony and sensing issues, and adjustments like changing sensitivity settings or PVARP duration were necessary for management.
Pacemaker-mediated reentrant arrhythmia facilitated by an atrial-tracking leadless pacemaker.
J Cardiovasc Electrophysiol
September 2024
Department of Medicine, Division of Cardiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA.
Article Synopsis
- Pacemaker-mediated tachycardia (PMRA) can occur in patients with dual chamber pacemakers and is particularly noted in those with intact ventriculoatrial conduction.
- A 91-year-old female with new cardiomyopathy received an AV synchronous leadless pacemaker, which led to frequent atrial and ventricular pacing issues, identified as PMRA due to changes in heart rates.
- The study highlights that PMRA may be overlooked in patients with leadless pacemakers, emphasizing the need for further research on its management and impact.
What are those intermittent "S" waves?
J Electrocardiol
June 2024
Department Internal Medicine, Atrium Health Carolinas Medical Center, Charlotte, NC, USA. Electronic address:
Article Synopsis
- A 69-year-old woman experienced three fainting spells while on an airplane and was diagnosed with severe bradycardia, indicated by her low heart rate in the thirties.!
- Two ECGs were performed: the first showed narrow QRS complexes, while the second displayed wide negative deflections after the QRS complexes.!
- Telemetry recordings allowed doctors to identify the problem's root cause and properly program her implanted pacemaker for treatment.!
Want 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!