TITLE

Exercise Radionuclide Assessment of Left Ventricular Function Before and After Coronary Bypass Surgery

AUTHOR(S)
Lewis, Ronald L.; Videll, Jerry S.; Strong, Michael D.; Maranhao, Vladir; Lumia, Frank J.
PUB. DATE
August 1987
SOURCE
Angiology;Aug1987, Vol. 38 Issue 8, p601
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The effects of elective saphenous vein coronary artery bypass surgery on left ventricular ejection fraction were assessed by using exercise first-pass radionuclide angiography in 66 consecutive patients. All patients with left main coronary artery or concomitant valvular disease were eliminated from the study. Before surgery, 7 patients had normal postexercise left ventricular function (Group 1), 33 had normal resting left ventricular function with an abnormal response to exercise (Group 2), and 26 had an abnormal resting left ventricular ejection fraction with an abnormal response to exercise (Group 3). Following surgery, patients in all three groups bad no change in mean resting left ventricular ejection fraction; however, patients in Groups 2 and 3 had significant improvement in mean postexercise left ventricular ejection fraction (p < 0.0001 and p< 0.0054 respectively), whereas patients in Group 1 did not. Previous studies reported improvement in postexercise ejection fraction in patients with reduced resting left ventricular function and with an ischemic response to exercise (Group 3). But this is the first study to confirm improvement in postexercise function in patients with normal resting function and an ischemic response to exercise (Group 2).
ACCESSION #
16352154

 

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