916-90 Is Baroreflex Failure Different from Idiopathic Baroreceptor Dysfunction?
نویسندگان
چکیده
منابع مشابه
Baroreceptor Reflex ▶Baroreflex Models Baroreflex Models
Blood pressure is controlled by several feedback mechanisms. The fastest one baroreceptor reflex (baroreflex) can be defined as the biological neural control system responsible for the short-term blood pressure regulation. From modeling perspective the baroreflex feedback control system consists of three parts (Fig. 1): • The afferent part where the arterial pressure is being read out, transduc...
متن کاملBaroreflex control of renal sympathetic nerve activity is preserved in heart failure despite reduced arterial baroreceptor sensitivity.
The purpose of this study was to determine if arterial baroreflex control of sympathetic nerve traffic is impaired in heart failure. We recorded renal nerve activity during changes in arterial pressure while simultaneously recording from aortic baroreceptor afferent fibers in 10 dogs with heart failure induced by rapid ventricular pacing and in 10 sham animals. Sensitivity of the aortic barorec...
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متن کاملAngiotensin II-superoxide-NFκB signaling and aortic baroreceptor dysfunction in chronic heart failure
Chronic heart failure (CHF) affects approximately 5.7 million people in the United States. Increasing evidence from both clinical and experimental studies indicates that the sensitivity of arterial baroreflex is blunted in the CHF state, which is a predictive risk factor for sudden cardiac death. Normally, the arterial baroreflex regulates blood pressure and heart rate through sensing mechanica...
متن کاملRole of nitric oxide and oxidative stress in baroreceptor dysfunction in patients with chronic heart failure.
Abnormalities of autonomic control of the cardiovascular system are seen in chronic heart failure (CHF) and confer a poor prognosis. Nitric oxide appears to be important in the regulation of baroreflex control in health and in disease states. The antioxidant vitamin C increases nitric oxide bioavailability in CHF. We evaluated the effects of vitamin C on baroreceptor sensitivity (BRS) by sequen...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 1995
ISSN: 0735-1097
DOI: 10.1016/0735-1097(95)91767-r