cardiac dysrhythmias may be subdivided in bradydysrhythmias ( sinuatrial block , sinus arrest , atrioventricular block ) and tachydysrhythmias ( supraventricular extrasystoles , supraventricular tachycardia , atrial flutter , atrial fibrillation , ventricular extrasystoles , and ventricular tachycardia ) .
C0003811
cardiac
C0004239
atrial flutter