![]() Intrinsic abnormality of AV conduction system.Physical exertion, emotion, stimulants, rheumatic heart diseases.When a normal P wave is present, it’s called paroxysmal atrial tachycardia when a normal P wave isn’t present, it’s called paroxysmal junctional tachycardia.Sudden onset and termination of arrhythmia.P waves regular but aberrant difficult to differentiate from preceding T wave.Regular atrial and ventricular rhythms.Beta-adrenergic blockers or calcium channel blockers for symptomatic patients. ![]() Atropine, epinephrine, quinidine, caffeine, nicotine, and alcohol use.May accompany shock, left-sided heart failure, cardiac tamponade, hyperthyroidism, and anemia.Normal physiologic response to fever, exercise, anxiety, dehydration, or pain.Atrial and ventricular rhythms are regular. ![]()
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