Junlang Zhang

First‐Phase Ejection Fraction: A Novel Approach to Detecting Early Systolic Dysfunction in Hypertrophic Cardiomyopathy

ABSTRACT Background The assessment of stable coronary artery disease has been performed using the first‐phase ejection fraction (EF1) in previous research. However, the use of EF1 has seldom been employed in the evaluation of early left ventricular systolic dysfunction among pati...