The purpose of this study was to determine if quantitative measurements of regional
asynergy add independent prognostic information to global ejection fraction in patients with
chronic coronary artery disease. Four hundred eighty-six patients with a history of Q-wave
myocardial infarction who underwent gated-equilibrium radionuclide angiography at least 3
months after infarction were monitored for a median duration of 4.7 years. During follow-up
there were 95 deaths. Four of five regional asynergy indexes analyzed were associated with …