Data on new, previously unidentified nerve cells of the snail Helix pomatia are presented in this paper. The identified neurons described may serve as a convenient model for the investigation of the cellular mechanisms of pacemaker activity, the role of neuropeptides in the generation and regulation of pacemaker activity, peptidergic transmission, and the functional role of the inward calcium current.
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http://dx.doi.org/10.1007/BF02355651 | DOI Listing |
Herzschrittmacherther Elektrophysiol
January 2025
Klinik für Innere Medizin-Kardiologie, Diabetologie und Nephrologie, Evangelisches Klinikum Bethel, Universitätsklinikum OWL der Universität Bielefeld, Campus Bielefeld-Bethel, Burgsteig 13, 33617, Bielefeld, Germany.
Like children, adult patients with active or abandoned epicardial pacing leads are also at risk of developing life-threatening cardiac ischemia due to mechanical compression of the coronary arteries. As this complication is amenable to surgical removal, these patients require periodic evaluation for myocardial ischemia even if they are asymptomatic.
View Article and Find Full Text PDFCureus
December 2024
Cardiology, Quillen College of Medicine, East Tennessee State University, Johnson City, USA.
Cardiac implantable electronic devices (CIEDs), including pacemakers, implantable cardiac defibrillators (ICD), and cardiac resynchronization therapy (CRT) devices, regulate heart rate and rhythm in patients with cardiac conditions. With an aging population, CIED-related complications, especially pacemaker pocket infections, are rising. Risk factors include frailty, older age, and superficial device fixation, while risk mitigation involves larger pocket sizes, submuscular fixation, and absorbable antibacterial envelopes.
View Article and Find Full Text PDFACG Case Rep J
January 2025
Department of Internal Medicine, Section of Gastroenterology, Wake Forest School of Medicine, Winston-Salem, NC.
Syncope is characterized by a transient loss of consciousness. Swallow syncope, a rare cause of syncope, is caused by vagus nerve activation resulting in vasodilation and bradycardia, thus causing transient hypotension and cerebral hypoperfusion. It is diagnosed through clinical history, cardiac, and esophageal evaluation.
View Article and Find Full Text PDFJ Innov Card Rhythm Manag
December 2024
University of Arizona College of Medicine-Phoenix, Phoenix, AZ, USA.
Device infection remains a dreaded and increasingly common complication of pacemaker procedures, often mandating removal of all implanted materials. Intensive wound management may be necessary following extraction, requiring multiple follow-up encounters in the outpatient setting. Here, a case of pacemaker pocket infection necessitating complete system extraction is presented.
View Article and Find Full Text PDFHeart Rhythm
January 2025
Division of Cardiology, Department of Internal Medicine, Severance Cardiovascular Hospital, Yonsei University College of Medicine, Seoul, South Korea. Electronic address:
Background: There is limited information on protective factors related to atrioventricular (AV) block.
Objective: This study examines the association between accelerometer-derived moderate-to-vigorous physical activity (MVPA) and AV block in healthy elderly individuals.
Methods: A total of 23,590 UK Biobank participants ≥60 years involved in a wrist-worn accelerometer study with no history of hypertension, diabetes mellitus, dyslipidemia, and coronary heart disease were analyzed.
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