Mitral valve m-mode echo in complete heart block with atrial tachycardia

Detection of 2:1 Atrioventricular Block by Echocardiographic Doppler Mitral Inflow Study

“…Literature on echocardiographic findings of AV block included M-mode findings of A wave following P wave during AV block, 4 M-mode of mitral leaflets showing multiple A waves corresponding to atrial tachycardia rate during complete heart block, 5 and diastolic mitral or tricuspid regurgitation during AV block in animal and human models. 6 , 7 The effects on LV diastolic function reflected by E-A wave changes were only described during 1st-degree AV block, bundle branch block, and cardiac pacing.…”