心室同步心脏起搏器

ventricular premature contractions

premature ventricular contractions

simple ventricular spetal defect

left ventricular diastolic pressure

ventricular end-diastolic pressure

asynchronous atrioventricular sequential pacing , DOO

transcatheter closure of congenital ventricular septal defect

Burr hole (trephination) for hemostasis,drainage or ventricular puncture,one hole added