AUTOREGULATION OF CEREBRAL BLOOD FLOW IN THE AWAKE NEWBORN PUPPY
نویسندگان
چکیده
منابع مشابه
Autoregulation of renal blood flow in the puppy.
The ability of the immature kidney to autoregulate blood flow was investigated. Renal blood flow was measured by electromagnetic flowmeter. In six puppies, selective blockade of the intrarenal effects of angiotensin II (AII) by [1-sarcosine, 8-alanine]angiotensin II (anti-AII) administered into the renal artery did not change renal blood flow. During selective renal AII blockade, intravenous AI...
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Autoregulation of cerebral blood flow (constant perfusion despite variations in blood pressure) was studied in 15 control subjects and in 24 patients with cerebral vascular lesions. Thirteen patients were studied within the first 2 days of an episode of cerebral ischemia ("acute" group); 11 were studied from 15 days to several months after an ischemic episode ("chronic" group). Measurements of ...
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Cerebral blood flow autoregulation (CBFA) to changes in perfusion pressure has not been previously reported in the rat. A modification of the Kety and Schmidt technique employing 133Xenon was used to measure cerebral blood flow (CBF) in paralyzed adult Sprague Dawley rats passively ventilated with 70% nitrous oxide and 30% oxygen. At a mean arterial blood pressure (MABP) of 121 +/- 19 mm Hg, an...
متن کاملModelling cerebral blood flow autoregulation in humans
Better understanding of the determinants of cerebral blood flow (CBF) and the interpretation of clinical measurements can benefit from quantitative modelling of CBF regulatory mechanisms and their interaction with other haemodynamic variables such as intracranial pressure and blood gases. Mathematical models have been able to reproduce many known phenomena and to extract relevant parameters for...
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To assess whether prostanoids have a role in setting the blood pressure limits of cerebral blood flow autoregulation in newborn animals, we measured cerebral blood flow and prostanoid concentrations in blood from the sagittal sinus over a wide range of mean systemic blood pressures (17-117 mm Hg) in eight newborn piglets treated with 30 mg/kg i.v. ibuprofen and in eight vehicle-treated piglets....
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ژورنال
عنوان ژورنال: Pediatric Research
سال: 1984
ISSN: 0031-3998,1530-0447
DOI: 10.1203/00006450-198404001-01470