Influences of autonomic changes on the sinus node recovery time in patients with sick sinus syndrome.
نویسندگان
چکیده
منابع مشابه
Influences of autonomic changes on the sinus node recovery time in patients with sick sinus syndrome.
To assess the relative contribution of sympathetic and vagal influences on diurnal variation of sinus node recovery time (SNRT) in sick sinus syndrome (SSS), the diurnal changes of SNRT and the effects of propranolol and subsequent atropine on SNRT were examined in 39 patients with SSS. SNRT was measured before and after intravenous propranolol (0.1 mg/kg), and after subsequent intravenous atro...
متن کاملAssessment by autonomic blockade of age-related changes of the sinus node function and autonomic regulation in sick sinus syndrome.
Age-related changes of the sinus node (SN) function and the autonomic influence on the SN function were evaluated in 65 patients with sick sinus syndrome (range 14 to 84 years). Heart rate (HR), corrected SN recovery time and sinoatrial conduction time were measured before (basic) and after (intrinsic) autonomic blockade (propranolol 0.2 mg/kg plus atropine 0.04 mg/kg intravenously). Percent of...
متن کاملRole of autonomic regulatory mechanism in sinoatrial conduction and sinus node automaticity in sick sinus syndrome.
To assess the role of autonomic regulatory mechanisms on sinoatrial conduction and automaticity in patients with clinical evidence of sick sinus syndrome, electrophysiologic studies were conducted in 12 male patients, mean age 64 4 7 years. Heart rate, sinus node recovery time (SNRT) and sinoatrial conduction time (SACT) were determined before and after autonomic blockade with atropine (0.04 mg...
متن کاملPatients With Sick Sinus Syndrome
Background. The goal of the report was to study the long-term incidence and the independent predictors for chronic atrial fibrillation and stroke in 507 paced patients with sick sinus syndrome, adjusting for differences in baseline clinical variables with multivariate analysis. Methods and Results. From 1980 to 1989, we implanted 376 dual-chamber, 19 atrial, and 112 ventricular pacemakers to tr...
متن کاملAssessment of sinus node function in patients with the sick sinus syndrome.
SUMMARY Thirty-one patients with symptomatic sinus node dysfunction were evaluated with electrocardiograms, Holter monitor recordings, exercise, isoproterenol infusions, atropine administration, Valsalva maneuvers, carotid sinus massage, and overdrive pacing. Four basic clinical subsets were recognized: (1) carotid sinus hypersensitivity (2) bradyeardia-tachyeardia syndrome, (3) episodic sinus ...
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ژورنال
عنوان ژورنال: Japanese Heart Journal
سال: 1990
ISSN: 0021-4868,1348-673X
DOI: 10.1536/ihj.31.645