<unk>  is a form of irregular heart beat in which the ventricle contracts prematurely.   This results in a skipped beat followed by a stronger beat.   Individuals may report a feeling that their heart stops after a<unk> .
Premature ventricular contraction
Premature atrial contraction
Pacemaker mediated tachycardia
Respiratory sinus arrhythmia
Ectopic atrial rhythm
Sinoatrial nodal reentry tachycardia
Pre-excitation syndrome
Right ventricular outflow tract tachycardia