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Dual AV Nodal Pathways—Vagal Influences on AV Nodal Conduction
Author(s) -
EZRI MARILYN D.,
HUANG SHOEI K.,
CHHABLANI RAMESH,
DENES PABLO
Publication year - 1983
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.1983.tb05328.x
Subject(s) - medicine , cardiology , nodal , carotid sinus , asymptomatic , sinus rhythm , massage , sinus (botany) , nodal signaling , anesthesia , blood pressure , atrial fibrillation , pathology , gastrulation , biochemistry , chemistry , botany , alternative medicine , embryonic stem cell , gene , biology , genus
This 52‐year‐old male presented with syncope and demonstrated two distinct PR intervals on the electrocar‐diogram. Electrophysiologic studies showed dual A V nodal path ways. Right‐sided carotid sinus massage induced prolonged periods of sinus arrest with no change in AH interval. Left‐sided carotid sinus massage produced long AH intervals (slow pathway conduction) with some slowing of sinus rate. Whenever sinus rhythm with slow pathway conduction was observed (long AH) a 20‐30 mmHg drop systolic pressure was seen. Following implantation of an AV sequential pacemaker, the patient has been asymptomatic.