Predicting the Effectiveness of Beta-Blocker Therapy in Vasovagal Syncope
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چکیده
منابع مشابه
Predicting the effectiveness of beta-blocker therapy in vasovagal syncope.
There has been a great deal of interest in the therapeutic role of beta-adrenergic blockade in patients suffering from vasovagal syncope. The efficacy of beta-blockers in these patients may be due to blunting of elevated catecholamine levels that precede vasovagal syncope (1). Notwithstanding the widespread use of beta-blockers in the past, some studies on chronic beta-blocker use have been les...
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(Hellenic Journal of Cardiology) HJC ñ 61 I solated vasovagal syncope (VVS) is not a disease, but rather the clinical manifestation of an autonomic reflex to which all (or almost all) individuals are predisposed. Why certain subjects appear to be more susceptible than others to the development of paradoxical hypotension and bradycardia, and why the event occurs at one time and not another, rema...
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Vasovagal syncope (VVS) can be classical (typical) or non-classical (atypical). Classical VVS is diagnosed when precipitating events, such as emotional or orthostatic triggers, are associated with typical autonomic prodromes. If triggers and/or prodromes are not present, VVS is defined as non-classical. The mechanisms of VVS have not been completely elucidated. Our knowledge of the afferent par...
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Clinical data are reported for 13 patients who were referred with recurrent loss of consciousness at night interrupting their sleep. Most of the patients were women (10 of 13) with a mean age of 45 years (range 21-72 years). The histories were more consistent with vasovagal syncope than with epilepsy. This was supported by electroencephalographic and tilt test results. More polysomnographic mon...
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Background—The pathophysiology of vasovagal syncope is poorly understood, and the treatment usually ineffective. Our clinical experience is that patients with vasovagal syncope fall into 2 groups, based on their supine systolic blood pressure, which is either normal ( 100 mm Hg) or low (70–100 mm Hg). We investigated neural circulatory control in these 2 phenotypes. Methods and Results—Sympathe...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 2008
ISSN: 0735-1097
DOI: 10.1016/j.jacc.2008.02.070