Summary: To determine whether ajmaline (A) can be safely applied in coronary artery disease (CAD), changes of left ventricular (LV) function after acute ajmaline application were analyzed by pulsed Doppler echocardiography in 10 CAD patients. LV pressures in systole and end-diastole and LVEF remained normal and comparable. Doppler normalized peak filling rate (p<0.02), peak early/atrial filling velocity (E/A) ratio (peO.01) and Edeceleration (pe0.05) increased. The increase in E/A and in E-deceleration relative to base values was directly correlated (p