نتایج جستجو برای: sick sinus syndrome
تعداد نتایج: 669144 فیلتر نتایج به سال:
n this issue of the Journal, Link et al. (1) report a study on he occurrence of pacemaker syndrome in the Mode Selecion (MOST) trial. The MOST trial is the largest randomzed trial of pacing mode selection in patients with sick sinus yndrome (SSS), including a total of 2,010 patients who all eceived rate-adaptive atrioventricular synchronous dualhamber pacing (DDDR) pacemakers and were randomly ...
Necropsy data from a series of 8 patients diagnosed during life as having chronic sinoatrial disorder (sick sinus syndrome) are presented. The morphology of the cardiac conducting system was studied by serial section, and the coronary vasculature was examined in detail in 5 of the 8 patients by the injection of a radiopaque medium, and in all 8 by routine histological methods. The sinoatrial no...
A 10 year old male presented with high grade continuous fever for 15 days to the pediatric ward of LNJPN Hospital. The fever was not associated with respiratory distress, alteration of sensorium or seizures. Examination revealed a sick looking child, conscious with cold extremities, normal JVP, a pulse rate of 120 per minute, regular, low volume with a blood pressure of 68/40 mm Hg. The spleen ...
course. All ages are affected and the diagnosis must be considered if there is a modest degree of sinus bradyeardia (SB), even if asymptomatic, as SB is less benign than was heretofore thought. Inappropriate or relatively slow sinus rates (RSSR) under stressful conditions are equally as important as SB. Inadequacy of the sinoatrial node (SAN) may be manifested by one or more of the following: (...
BACKGROUND/AIMS Congenital Sick Sinus Syndrome (SSS) is a disorder associated with sudden cardiac death due to severe bradycardia and prolonged pauses. Mutations in HCN4, the gene encoding inward Na+/K+ current (If), have been described as a cause of congenital SSS. The objective of this study is to develop an SSS model in embryonic zebrafish, and use zebrafish as a moderate-throughput assay to...
Autonomic symptoms are frequently seen in patients with Parkinson’s disease (PD). These include urinary symptoms, sweating disturbance, constipation, sexual dysfunction and blurred vision [1]. Dysregulation of parasympathetic cardiovascular control mechanisms is a frequent complication of early stage PD [2,3]. Such dysregulation can manifest itself as a range of measurable changes in cardiac fu...
A patient is described who developed symptomatic sinus bradycardia as low as 20 beats per minute and sinus arrest of up to 4.4 seconds while receiving guanethidine, 75 mg daily. The bradycardia resolved following discontinuation of the drug and reappeared upon challenge with it. Intrinsic disease of the sinoatrial and atrioventricular nodes was evidenced 3 weeks following discontinuation of the...
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