نتایج جستجو برای: cerebral state index
تعداد نتایج: 1396076 فیلتر نتایج به سال:
Left ventricular (LV) hypertrophy and dysfunction due to hypertension have been established as risk markers for stroke in hypertensive patients. The purpose of this study was to examine the differences in LV hypertrophy and dysfunction between patients with cerebral hemorrhage and those with cerebral infarction. The study enrolled 23 hypertensive patients with cerebral infarction, 25 hypertensi...
The study was conducted to determine the clinical pattern and etiology of cerebral venous thrombosis in Iran. Records of all adult patients admitted with a clinical diagnosis and MRI of cerebral venous thrombosis from 1993 through 1999 in three major hospitals of Tehran, Iran were reviewed. Fifty patients (39 women, 11 men) aged 14 to 56 years were identified. Headache the most frequent and oft...
Background and objective: Transient global cerebral ischemia leads to neuronal damage in the hippocampus and cerebral cortex which results in learning and memory impairment. Exercise preconditioning helps with neuroprotection against cerebral injuries induced by ischemia. The purpose of the present study was to investigate the effect of exercise preconditioning on tactile learning following glo...
BACKGROUND Continuous monitoring of dynamic cerebral autoregulation, using a moving correlation index of cerebral perfusion pressure and mean middle cerebral artery flow velocity, may be useful in patients with severe traumatic brain injury to guide treatment, and has been shown to be of prognostic value. OBJECTIVE To compare an index of dynamic cerebral autoregulation (Mx) with an index of s...
introduction : cerebral autoregulation (ca) and mean cerebral blood flow velocity in males and females are still under controversy. the present study was scheduled to address the effect of sex on these parameters. materials and methods : the present study was interventional and performed on 30 healthy volunteers (15 males aging from 20-30 yrs and mean age of 23.9±3 years old and 15 females agin...
BACKGROUND AND PURPOSE Individualizing mean arterial blood pressure targets to a patient's cerebral blood flow autoregulatory range might prevent brain ischemia for patients undergoing cardiopulmonary bypass (CPB). This study compares the accuracy of real-time cerebral blood flow autoregulation monitoring using near-infrared spectroscopy with that of transcranial Doppler. METHODS Sixty adult ...
BACKGROUND AND PURPOSE The incidence of wall enhancement of cerebral aneurysms on vessel wall MR imaging has been described as higher in ruptured intracranial aneurysms than in unruptured intracranial aneurysms, but the difference in the degree of enhancement between ruptured and unruptured aneurysms is unknown. We compared the degree of enhancement between ruptured and unruptured intracranial ...
BACKGROUND Cerebral state index (CSI) has recently been introduced as an intra-operative monitor of anaesthetic depth. We compared the performance of the CSI to the bispectral index (BIS) in measuring depth of anaesthesia during target-controlled infusion (TCI) of propofol. METHODS Twenty Chinese patients undergoing general anaesthesia were recruited. CSI and BIS, and predicted effect-site co...
Regional cerebral blood flow studies with xenon-133 are useful in the functional assessment of cerebrovascular diseases. Conventional models for cerebral blood flow calculation employ 11 minutes of data collection. However, in many circumstances it is not possible to maintain steady-state physiologic conditions for 11 minutes. We compared a monocompartmental model that requires only 3 minutes o...
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