sleep was characterized by marked sinus arrhythmia in 14 , extreme sinus bradycardia ( less than 30 beats/minute ) in six , asystole of 2.5 to 6.3 seconds in five , second degree atrioventricular ( a-v ) block in two , and ventricular arrhythmias -- complex premature ventricular beats in 10 and ventricular tachycardia in two .
C0085612
ventricular
C0042514
ventricular