Dynamic Autoregulation Testing in the Posterior Cerebral Artery
نویسندگان
چکیده
منابع مشابه
Dynamic autoregulation testing in the posterior cerebral artery.
BACKGROUND AND PURPOSE Dynamic autoregulation has been studied predominantly in the middle cerebral artery (MCA). Because certain clinical conditions, ie, presyncopal symptoms or hypertensive encephalopathy, suggest a higher vulnerability of autoregulation within posterior parts of the brain, we investigated whether the cerebral blood flow velocity (CBFV) is modulated differently within the pos...
متن کاملDynamic autoregulation testing in patients with middle cerebral artery stenosis.
BACKGROUND AND PURPOSE Cross-spectral analysis (CSA) of spontaneous oscillations in cerebral blood flow velocity (CBFV) and arterial blood pressure is considered a sensitive and convenient method for dynamic autoregulation testing. So far, it has been unclear whether CSA can be used to assess stenoses of the intracranial arteries. METHODS This study for the first time applies CSA to 26 patien...
متن کاملDynamic cerebral autoregulation and monitoring cerebral perfusion.
Cerebral autoregulation (CA) describes the capability of the brain to maintain its flow as relatively stable over a wide rage of mean arterial pressures (MAPs), for example, from 60 to 150 mm Hg. Because the brain is encompassed in the skull, CA is vital for preventing cerebral edema and hemorrhage, as illustrated in some patients experiencing acute liver failure.1 Also, CA counteracts the effe...
متن کاملDynamic cerebral autoregulation in acute lacunar and middle cerebral artery territory ischemic stroke.
BACKGROUND AND PURPOSE We addressed whether dynamic cerebral autoregulation (dCA) is affected in middle cerebral artery (MCA) territory (MCAS) and lacunar ischemic stroke (LS). METHODS Blood pressure (MAP) and MCA velocity (V) were measured in 10 patients with large MCAS (National Institutes of Health Stroke score, 17+/-2; mean+/-SEM), in 10 with LS (score, 9+/-1), and in 10 reference subject...
متن کاملDynamic Cerebral Autoregulation in Asymptomatic Patients With Unilateral Middle Cerebral Artery Stenosis
The aim of the study was to assess the capacity of dynamic cerebral autoregulation (dCA) in asymptomatic patients with unilateral middle cerebral artery (MCA) stenosis.Fifty-seven patients with asymptomatic mild, moderate, and severe unilateral MCA stenosis and 8 patients with symptomatic severe unilateral MCA stenosis diagnosed by transcranial Doppler were enrolled. Twenty-four healthy volunte...
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ژورنال
عنوان ژورنال: Stroke
سال: 2004
ISSN: 0039-2499,1524-4628
DOI: 10.1161/01.str.0000120729.99039.b6