Bezold Jarisch reflex and acute cardiovascular collapse during craniotomy
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چکیده
منابع مشابه
Roles of Arterial Baroreceptor Reflex During Bezold-Jarisch Reflex
Among the many cardiopulmonary reflexes, this review specifically examines the roles of the arterial baroreflex during the Bezold-Jarisch reflex (BJR). Activation of cardiopulmonary vagal afferent C-fibers induces hypotension, bradycardia, and apnea, which are known collectively as the BJR; myocardial ischemia and infarction might induce the BJR. Arterial baroreflex has been established as an i...
متن کاملNonuniformity in the von Bezold-Jarisch reflex.
The von Bezold-Jarisch reflex (BJR) is a vagally mediated chemoreflex from the heart and lungs, causing hypopnea, bradycardia, and inhibition of sympathetic vasomotor tone. However, cardiac sympathetic nerve activity (CSNA) has not been systematically compared with vasomotor activity during the BJR. In 11 urethane-anesthetized (1-1.5 g/kg iv), artificially ventilated rats, we measured CSNA simu...
متن کاملClinical relevance of the Bezold-Jarisch reflex.
THE idea that reflexes originating in the heart can play a role in normal physiology dates to the 1860s. Until the 1950s, these reflexes, and the Bezold–Jarisch reflex (BJR) in particular, were regarded largely as pharmacological curiosities with the only practical application of the study of the BJR being the clinical use of a veratrum alkaloid as an antihypertensive agent. Since the 1860s, it...
متن کاملBezold–Jarisch reflex in sino-aortic denervated malnourished rats
In this study we assessed the role of Bezold-Jarisch reflex (BJR) in the regulation of blood pressure (BP) of malnourished (MN) and control rats (CN) with sino-aortic denervation (SAD). Fischer rats were fed diets containing either 6% (MN) or 15% (CN) protein for 35 days after weaning. These rats underwent sham or SAD and catheterization of femoral artery and vein for BP measurements and drug i...
متن کاملBezold-Jarisch reflex attenuates dynamic gain of baroreflex neural arc.
Although acute myocardial ischemia or infarction may induce the Bezold-Jarisch (BJ) reflex through the activation of serotonin receptors on vagal afferent nerves, the mechanism by which the BJ reflex modulates the dynamic characteristics of arterial pressure (AP) regulation is unknown. The purpose of this study was to examine the effects of the BJ reflex induced by intravenous phenylbiguanide (...
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ژورنال
عنوان ژورنال: Indian Journal of Anaesthesia
سال: 2017
ISSN: 0019-5049
DOI: 10.4103/0019-5049.199865