Key result
Aorto-coronary bypass operation improved symptoms, but patients with occluded grafts showed deteriorated myocardial function, including a 10 ± 4% decrease in ejection fraction (P<0.05).
Why the study?
Does aorto-coronary bypass operation preserve or enhance myocardial function in severely symptomatic patients?
Population
22 patients who underwent cardiac catheterization before and an average of five months after aorto-coronary…
Comparison
Aorto-coronary bypass operation with all grafts… vs Aorto-coronary bypass operation with one or more…
Design
Cohort
Follow-up
average of five months
Authors
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Bypass may relieve symptoms without preserving EF if grafts occlude; leaves open whether patency monitoring alters outcomes in cohorts.
Cohort (n=22)
Does aorto-coronary bypass operation preserve or enhance myocardial function in severely symptomatic patients?
Aorto-coronary bypass operation provides symptomatic relief but does not consistently preserve or enhance myocardial function, particularly when grafts occlude.
Shepherd et al. (1974) conducted a cohort in Aorto-coronary bypass operation (n=22). Aorto-coronary bypass operation (patent grafts) vs. Aorto-coronary bypass operation (occluded grafts) was evaluated on Myocardial function (LVEDP, stroke volume index, ejection fraction, left ventricular stroke work index). Aorto-coronary bypass operation improved symptoms, but patients with occluded grafts showed deteriorated myocardial function, including a 10 ± 4% decrease in ejection fraction (P<0.05).
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