NCIt definition : Reduced left ventricular function with less than 50% ejection fraction in a patient
with history of suspected or confirmed myocardial ischemia or acute coronary syndrome
(ACS) that started during probable or confirmed acute COVID-19 and persisted beyond
four weeks after the initial diagnosis of COVID-19.;
Alternative definition : ACC/AHA: Reduced LV function with LVEF less than 50% in a patient with history of
suspected or confirmed myocardial ischemia or ACS with acute COVID-19 that started
during probable or confirmed acute COVID-19 and persisted beyond 4 wk after the initial
diagnosis of COVID-19. Preexisting cardiovascular conditions, or those that did not
develop until after COVID-19 had resolved, should not be listed here.;