Open AccessRadionuclide left ventricular function curve during atrial pacing in normal subjects and in patients with coronary artery disease
Author(s) -
Rozenman Y.,
Weiss A. T.,
Gotsman M. S.
Publication year - 1986
Publication title -
clinical cardiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.263
H-Index - 72
eISSN - 1932-8737
pISSN - 0160-9289
DOI - 10.1002/clc.4960090305
Subject(s) - medicine , cardiology , coronary artery disease , stroke volume , radionuclide angiography , diastole , compliance (psychology) , ventricular function , blood pressure , ejection fraction , heart failure , social psychology , psychology
We used radionuclide angiography during right atrial pacing to assess left ventricular function in 7 normal subjects and 20 patients with coronary artery disease. A left ventricular function curve relating stroke volume to end‐diastolic volume was plotted for each patient. The normal pacing ventricular function curve was a straight line passing through the origin of axes. The pacing ventricular function curve was abnormal in 18 of the 20 patients with coronary artery disease, and three different shaped curves were obtained, reflecting decreased contractile force for the same end‐diastolic volume during ischemia. Cardiac output and blood pressure do not change during atrial pacing, thus the Frank‐Starling relationship is evaluated by this method during almost experimentally controlled conditions. Relating stroke volume to end‐diastolic volume, and not end‐diastolic pressure, distinguishes between overall left ventricular systolic function and left ventricular compliance.