Baroreceptor reflex sensitivity index derived from Phase 4 of te Valsalva maneuver.
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چکیده
منابع مشابه
Baroreceptor reflex sensitivity index derived from Phase 4 of te Valsalva maneuver.
The purpose of this study was to find a method to assess the sensitivity of the baroreceptor reflex avoiding the use of a pressor amine. Following the release of the Valsalva maneuver (VM), there is usually a pressor rise similar to the one obtained by phenylephrine administration. We were able to assess the baroreceptor reflex sensitivity index (BRSI) using this phase of the VM. Included in th...
متن کاملBaroreceptor Reflex Sensitivity Index Derived from Phase 4 of the Valsalva Maneuver
The purpose of this study was to find a method to assess the sensitivity of the baroreceptor reflex avoiding the use of a pressor amine. Following the release of the Valsalva maneuver (VM), there is usually a pressor rise similar to the one obtained by phenylephrine administration. We were able to assess the baroreceptor reflex sensitivity index (BRSI) using this phase of the VM. Included in th...
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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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BACKGROUND AND PURPOSE Cerebral syncope refers to a loss of consciousness associated with cerebral vasoconstriction in the absence of systemic hypotension. The diagnosis of cerebral syncope could be established by the head-up tilt test (HUT) and transcranial Doppler ultrasonography. Valsalva maneuver (VM) permitted assessment of cerebral autoregulatory function by provoking blood pressure (BP) ...
متن کاملAssessment of baroreceptor reflex sensitivity by means of spectral analysis.
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...
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ژورنال
عنوان ژورنال: Hypertension
سال: 1981
ISSN: 0194-911X,1524-4563
DOI: 10.1161/01.hyp.3.6_pt_2.ii-134