flow autoregulation

flow autoregulation

The intrinsic capacity of arterioles to respond to changes in arterial pressure by a change in bore so as to maintain constancy of blood flow.
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Propofol total intravenous anesthesia (TIVA) maintains cerebral blood flow autoregulation and is considered superior to inhalant agents as an anesthetic protocol for patients with intracranial lesions.
2] This syndrome is a clinico-neuroimaging entity and is hypothesised to be related to impaired cerebral blood flow autoregulation that leads to either over- or under-perfusion of the brain.
PRES may be associated with a failure in cerebral blood flow autoregulation combined with endothelial dysfunction (5).
The cerebral blood flow autoregulation mechanism is intact CA when PRx is negative.
2007) Retinal blood flow autoregulation after dynamic exercise in healthy young subjects.
According to Vaughan and colleagues, while the "exact mechanism" of PRES is not yet clear, "it does seem to be associated with a failure in cerebral blood flow autoregulation combined with endothelial dysfunction3.
It may be important to note that children have a lower range of cerebral blood flow autoregulation than adults.
Whether cerebral blood flow autoregulation is maintained in autonomic dysfunction has been debated for a long time.
It has been suggested that impaired cerebral blood flow autoregulation is one of the causative mechanisms.
2]E) was measured to assess the direct vasodilatory effect of the extract apart from the physiological coronary flow autoregulation due to changes in metabolic demands of the heart, as local metabolites are important regulators of coronary flow (Hoffman, 1984).
On March 2 (the 16th day of clinical illness), the treating physicians initiated the Milwaukee Protocol, including parenteral ketamine infusion (2 mg/kg), midazolam infusion (0-20 mg/hour), ribavirin (560 [micro]g every 8 hours), and amantadine (200 mg once daily); the protocol was modified to include L-arginine (35 g every 24 hours), enteral administration of tetrahydrobiopterin (150 mg every 8 hours), and vitamin C (500 mg once daily) to supplement possible deficiencies and to improve cerebral blood flow autoregulation.