Lability of arterial pressure after baroreceptor denervation is not pressure dependent.
نویسندگان
چکیده
منابع مشابه
Lability of arterial pressure after baroreceptor denervation is not pressure dependent.
The mechanisms of increased arterial pressure lability after sinoaortic deafferentation remain unknown. We have shown previously in rats with chronic sinoaortic deafferentation (7-14 days after sinoaortic deafferentation) that ganglionic blockade significantly reduced mean arterial pressure and arterial pressure lability. The present study investigated the possibility that lability is related t...
متن کاملArterial baroreceptor denervation impairs long-term regulation of arterial pressure during dietary salt loading.
Experiments were performed to examine the contribution of arterial baroreceptors to long-term regulation of mean arterial pressure (MAP) during changes in dietary salt intake. Normotensive Sprague-Dawley rats were subjected to either sinoaortic denervation (SAD; n= 8) or Sham surgery ( n = 6) and instrumented 1 wk later with radiotelemetry transmitters for continuous minute-to-minute monitoring...
متن کاملEffect of selective denervation of baroreceptors on pulmonary ventilation and arterial pressure lability in rat.
Earlier studies report that sinoaortic baroreceptor denervation (SAD) in rats causes moderate elevation of mean arterial pressure along with a marked increase of arterial pressure lability (APL). In this context, we studied the effects of selective aortic denervation (AD) or selective carotid denervation (CD) on the regulation of blood pressure. In addition, we evaluated the effects of selectiv...
متن کاملEffect of carotid or aortic baroreceptor denervation on arterial pressure during hemorrhage in conscious dogs.
We studied the effect of chronically denervating aortic baroreceptors (ABR; n = 6) or carotid baroreceptors (CBR; n = 7) on mean arterial pressure (MAP) and heart rate (HR) responses to hemorrhage in the dog. Neither denervation had a significant effect on basal MAP, the variability (standard deviation) of MAP, or resting HR. However, the breakpoint of MAP (defined as the volume of blood remove...
متن کاملChronic lability of arterial pressure in the rat does not evolve into hypertension.
1. In rats, electrolytic lesions of the A2 group of catecholamine neurons result in lability of arterial pressure without hypertension. 2. To establish whether labile arterial pressure, when chronic, will lead to fixed hypertension, we placed lesions in the A2 area of adult male Sprague-Dawley rats and measured mean arterial pressure, heart rate and their variability (expressed as the standard ...
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ژورنال
عنوان ژورنال: Hypertension
سال: 1989
ISSN: 0194-911X,1524-4563
DOI: 10.1161/01.hyp.14.5.501