Estimation of Ejection Fraction with Echocardiographic and Cardioangiographic Methods in 50 Cardiac Patients

Document Type: Original Article

Authors

1 Assistant Professor of Cardiovascular Diseases

2 Professor of Dermatology, Kerman University of Medical Sciences and Health Services, Kerman, Iran

Abstract

Ejection fraction is the most important indicator of heart failure. Angiography , is a standard method to
demonstrate ejection fraction but it is invasive. Therefore determination of sensitivity and specificity of
echocardiography versus angiography is a good guidance for physicians. A total number of 50 patients were
enrolled in a prospective study. Two dimension and M-Mode echocardiography were first done in patients
candidate for angiography and then they underwent coronary angiography. Sensitivity for M-Mode and 2D
echocardiography was 59.4% and 43.8% and specificity for them was 100% and 94.4% respectively. The
difference between the calculated amount of decrease in ejection fraction by 2D echo and angiography was
statistically signifcant (p<o.ooo1) and for M-Mode echo and angiography was P=0.003. This means that
with decreased ejection fraction,both echocardiography methods have less diagnostic accuracy in
comparison to angiography. Pearson's correlation coefficient between calcuated ejection fractions by two
modes of echocardiography and angiography was r=0.78 for M-Mode and r=0.44 for 2D which means a
stronger correlation between M-mode echocardiography and angiography. 

Keywords