Sick Sinus Syndrome

Pj, Bower

doi:10.1001/archinte.1978.03630250089025

Cited by 14 publications

(1 citation statement)

References 34 publications

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“…Gener ally speaking, the majority of cases are probably due to a degenerative pro cess with fibrotic changes involving the sinus node and perinodal zone as well as A-V node and the intraventricular conduction system to an individ ually different extent [2,15]. Therefore, a high incidence of sinus node dysfunction in patients with A-V block is not surprising.…”

Section: Discussionmentioning

confidence: 99%

Sinoatrial Conduction Time in Patients with Atrioventricular Block

Rakovec¹

1981

Cardiology

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In 20 patients with atrioventricular (A-V) block, sinoatrial conduction time (SACT) was measured in order to establish the incidence of sinoatrial conduction defects. 10 patients had complete A-V block, 5 patients second-degree A-V block type I, 2 patients second-degree A-V block type II, and 3 patients first-degree A-V block. Prolonged bidirectional SACT was found in 8 cases (40%). The mean value ( ± SD) of SACT was 206 ± 69 ms. In comparison with SACT in a group of 11 patients without symptoms and signs of sinus node disorder (mean value 156 ± 25 ms) the difference was significant (p < 0.05). On the other side, the values of SACT were shorter in patients with A-V block than in 13 patients with sick sinus syndrome (mean value 311 ± 82 ms); the difference was statistically significant (p < 0.001). The study shows that impairment of sinoatrial conduction frequently coexists with A-V conduction defects.

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Section: Discussionmentioning

confidence: 99%

Sinoatrial Conduction Time in Patients with Atrioventricular Block

Rakovec¹

1981

Cardiology

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Syncope of unknown origin. The need for a more cost-effective approach to its diagnosis evaluation

Kapoor¹,

Karpf²,

Maher³

et al. 1982

JAMA: The Journal of the American Medical Association

131

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The records of 121 patients hospitalized in Presbyterian-University Hospital, Pittsburgh, during 1976 to 1980 for syncope of unknown origin were reviewed. The were 58 men and 63 women, whose mean age was 63.1 years. Cardiac monitoring in 67 patients showed abnormalities in seven patients, considered diagnostic of the cause of syncope. In 13 patients with electrophysiologic studies, four patients had abnormal results, suggesting a probable cause for the syncope. Cardiac catheterization in 14 patients showed significant findings that demonstrated the cause of syncope in three patients. Glucose tolerance tests in 37 patients, head computed tomographic scans in 39 patients, radionuclide brain scans in 15 patients, lumbar punctures in 22 patients, and skull roentgenograms in 46 patients did not aid in the diagnosis of the cause of syncope in any patient. In 67 patients, EEGs produced abnormal results in 26, but the role of EEGs in the diagnostic workup of syncope could not be completely defined. The definitive cause for syncope was diagnosed in only 13 of 121 patients, with an average hospitalization of nine days and an average cost of $2,463 per patient. These findings suggest that an extensive evaluation of syncope is cost--ineffective and that prospective goal-directed approaches need to be developed.

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Value of physical and pharmacological tests in predicting intrinsic and extrinsic sick sinus syndrome

Bhandari

Kaul

et al. 1986

International Journal of Cardiology

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Sick Sinus Syndrome

Cited by 14 publications

References 34 publications

Sinoatrial Conduction Time in Patients with Atrioventricular Block

Sinoatrial Conduction Time in Patients with Atrioventricular Block

Syncope of unknown origin. The need for a more cost-effective approach to its diagnosis evaluation

Value of physical and pharmacological tests in predicting intrinsic and extrinsic sick sinus syndrome

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