<unk>  <unk>  is a cardiac conduction abnormality seen on the electrocardiogram (ECG). In this condition, activation of the<unk>  ventricle of the heart is delayed, which causes the<unk>  ventricle to contract later than the right ventricle.
Left bundle branch block
Right bundle branch block
Bundle branch block
Sinoatrial block
Pre-excitation syndrome
Atrioventricular block
Sinoatrial arrest
Ventricular flutter