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What is Which of the following is untrue regarding "sick sinus syndrome": and explain in detail?
Coronary disease is a common cause Sick sinus syndrome is usually caused by idiopathic fibrosis of the sinus node. - Coronary disease is an uncommon cause. - Pharmacologic therapy for sick sinus syndrome has been difficult but recent studies have indicated that oral theophylline may be effective especially when sinus bradycardia is the major manifestation.