Premium
Epicardial Mapping: Ventricular Epicardial Activation is Unaffected by Heart Position
Author(s) -
PAUL THOMAS,
MORRIS CODY,
GARSON ARTHUR
Publication year - 1989
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.1540-8159.1989.tb01897.x
Subject(s) - medicine , qrs complex , cardiology , sinus rhythm , heart rhythm , coronal plane , normal sinus rhythm , anatomy , atrial fibrillation
Epicardial ventricular mapping was performed in five dogs during sinus rhythm with a sock array containing 41 bipolar electrodes. Maps were generated with a computer‐assisted mapping system when the heart was in situ and when the heart was lifted by 44° out of the chest. Times of earliest and latest epicardial activation in these two states did not differ. Despite a different frontal plane QRS axis, location of earliest activation was not affected by lifting the heart. In two of the five animals, the site of latest epicardial activation was minimally different from the heart in situ, but the general pattern of epicardial activation was unchanged. Therefore, the change in frontal plane QRS axis with lifting the heart was due to a change in heart position rather than a general change of heart activation.