Prognosis in medically-treated coronary artery disease: influence of ejection fraction compared to other parameters

Circulation
|September 1, 1975
PubMed

Insights

Left ventricular ejection fraction (EF) is the strongest predictor of short-term survival in coronary artery disease patients. A normal EF significantly reduces mortality risk compared to reduced EF, even with severe disease.

Area of Science:

  • Cardiology
  • Clinical Medicine
  • Medical Prognostics

Background:

  • Coronary artery disease (CAD) management relies on prognostic indicators.
  • Traditional indices include coronary artery disease severity, hemodynamic measures, and ECG abnormalities.

Purpose of the Study:

  • To compare the prognostic value of left ventricular ejection fraction (EF) against other common indices in CAD patients.
  • To determine the most powerful predictor of short-term survival in medically managed CAD.

Main Methods:

  • A cohort of 144 CAD patients on medical management was followed for 14 months.
  • Mortality data was analyzed in relation to baseline prognostic indices, including EF, CAD severity, left ventricular end-diastolic pressure, cardiac index, and ECG findings.

Main Results:

  • Left ventricular ejection fraction (EF) emerged as the most potent predictor of short-term survival.
  • Patients with three-vessel CAD and a normal EF (>0.50) had significantly lower mortality (12%) compared to those with reduced EF (33%, P < 0.001).
  • Similar findings were observed across subgroups with abnormal hemodynamics or ECGs, highlighting EF's superior discriminant value.

Conclusions:

  • Left ventricular ejection fraction (EF) is a crucial prognostic guide in the medical therapy of coronary artery disease.
  • EF demonstrates significantly greater discriminant value than other commonly used measurements, especially when combined with other abnormalities.

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