Reference values of indices of spontaneous baroreceptor reflex sensitivity
نویسندگان
چکیده
منابع مشابه
Centrally infused bradykinin increases baroreceptor reflex sensitivity.
Kinins are present in the central nervous system, and central administration of bradykinin increases blood pressure and heart rate. In this study, we determined the effect of intracerebroventricular infusion of bradykinin on the baroreceptor reflex of conscious rats. Male Wistar rats were anesthetized with thiobarbital (40 mg/kg i.p.), and chronic intracerebroventricular cannulas (25 gauge) wer...
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A method of determining baroreceptor reflex sensitivity is proposed that is based on spectral analysis of systolic pressure values and RR interval times, namely, the modulus (or gain) in the mid frequency band (0.07-0.14 Hz) between these two signals. Results using this method were highly correlated (0.94; n = 8) with results of the phenylephrine method. In addition, compared with the values fo...
متن کاملBaroreceptor reflex function.
THE IMPORTANCE of the baroreceptor reflex is to stabilize perfusion pressure in the face of disturbances of circulatory homeostasis. This is achieved by a number of neuronal (8, 29, 37, 48) and humoral (37, 45, 46) regulatory adjustments. These adjustments are initiated by a change in the pressure load at specialized pressure sensors located at the aortic arch and the carotid sinuses. Especiall...
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Breed-wise standard echocardiographic values in dogs have been reported as there is variation in body and chest conformation which limits the application of data of one breed for other breed. Labrador Retrievers being originated from hunting dogs, might have different echocardiographic values from standard normal range of other dog breeds. So, the present study was aimed to determine the M-mode...
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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...
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ژورنال
عنوان ژورنال: American Journal of Hypertension
سال: 2000
ISSN: 0895-7061,1941-7225
DOI: 10.1016/s0895-7061(99)00172-7