Author: Johnson Francis

Ultrasound techniques currently used in echocardiography uses frame rates from 30-150 frames/s. This limits its temporal resolution for very short lived events, especially in pediatric and congenital heart

Classical QRS pattern in ASD is the rSR’ in V1 suggestive incomplete RBBB. This pattern in ASD is due to RV volume overload. QRS axis is usually rightward,

Normal 12 lead ECG