11/12/2023 0 Comments Cardiac sick sinus syndrome![]() ![]() National Heart, Lung, and Blood Institute. Permanent cardiac pacing: Overiew of devices and indications. Journal of the American College of Cardiology. 2018 ACC/AHA/HRS guideline on the evaluation and management of patients with bradycardia and cardiac conduction delay: A report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines and the Heart Rhythm Society. In: Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine. Sinus node dysfunction: Clinical manifestations, diagnosis, and evaluation. Sinus node dysfunction: Epidemiology, etiology, and natural history. In: Clinical Arrhythmology and Electrophysiology: A Companion to Braunwald's Heart Disease. ![]() The heart rate alternates between unusually slow and fast rhythms, often with a long pause between heartbeats. The heart rate is within regular range at rest but doesn't increase as much as it should with physical activity. Signals to the upper heart chambers are slowed or blocked, causing pauses or skipped beats. Signals from the sinus node pause, causing skipped beats. The sinus node produces a slow heartbeat. Neuromuscular diseases, such as muscular dystrophy.Medications to treat irregular heartbeats (arrhythmias).Medications to treat high blood pressure, including calcium channel blockers and beta blockers.Inflammatory diseases affecting the heart. ![]()
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