Iatrogenic sick sinus syndrome.

Benefits of dual chamber pacing in sick sinus syndrome.

The effects of DDD (fully automatic) and VVI (ventricular demand) pacing modes on exercise tolerance, symptom diary cards, and Holter monitoring were investigated in a randomised double blind crossover study of 16 patients who had had DDD pacemakers implanted because of frequent syncope. Eight patients presented with sick sinus syndrome and, with one exception, retrograde atrioventricular condu...

Different distribution of abnormal endocardial electrograms within the right atrium in patients with sick sinus syndrome.

BACKGROUND Prolonged and fractionated right atrial endocardial electrograms are characteristic of paroxysmal atrial fibrillation (idiopathic or associated with sick sinus syndrome). The distribution of these abnormal atrial electrograms within the right atrium and the way it is related to the likelihood that patients with sick sinus syndrome will develop paroxysmal atrial fibrillation was studi...

Sick sinus syndrome associated with hypopituitarism: a case report and literature review

Though an association between autoimmune diseases and sick sinus syndrome has been reported, there has been no report on the association of hypopituitarism and sick sinus syndrome. Herein, we provide the first case report of hypopituitarism accompanying sick sinus syndrome in a 51-year-old woman presented to our hospital with syncope due to cardiac arrest. The patient was successfully managed b...

Studies on the Mechanism of Sinus Node Dysfunction in the Sick Sinus Syndrome JAY

The intrinsic heart rate (IHR) was determined in 17 patients with symptomatic sinus bradycardia by administering atropine 0.04 mg/kg and propranolol 0.2 mg/kg, i.v. In this way, sick sinus (SSS) patients with intrinsic sinus node (SN) dysfunction could be distinguished from those patients with disturbed autonomic regulation of SN function. Sick sinus syndrome patients with normal corrected sinu...

Malignant Lymphoma Demonestrating Sick Sinus Syndrome and Superior Vena Cava Syndrome

Reports which describe sick sinus syndrome due to malignant lymphoma have been rare and only eight cases have been reported until now. This is a case of sick sinus syndrome and superior vena cava syndrome secondary to invasion of occult malignant lymphoma of the lung in a 60 years old male. There were no symptoms or signs of malignancy before the first presentation with sick sinus syndrome. Pat...

Stroke and atrial fibrillation in sick sinus syndrome.