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Clinical Trial Summary

Change and effect of cerebral autoregulation during targeted temperature management in neurocritical patients


Clinical Trial Description

Cerebral autoregulation (CA) is the ability of cerebral vascular system to contract or diastole with the change of perfusion pressure, and to maintain the stability of cerebral blood flow. It has been found that there are different degrees of CA damage in patients with traumatic brain injury, ischemic stroke, hemorrhagic stroke, aneurysmal subarachnoid hemorrhage, ischemic hypoxic encephalopathy and sepsis. At the same time, studies have shown that CA damage or loss is related to brain dysfunction and poor prognosis in patients with neurocritical diseases. Therefore, early assessment and intervention of CA can help identify individuals with high risk of complications and improve outcome. Targeted temperature management (TTM) is a kind of body temperature management started when the core temperature of patients is higher than 37.5 ℃, including achieve hypothermia (TTMhypo) and maintain normal temperature (TTMnorm). TTMhypo has been widely considered as one of the neuroprotective therapies for a variety of brain diseases and injuries, including ischemic stroke, traumatic brain injury, hypoxic brain injury caused by out-of-hospital cardiac arrest and neonatal hypoxic ischemic encephalopathy. Its neuroprotective effects in reducing brain edema, reducing intracranial pressure, reducing brain metabolism and inhibiting apoptosis have been recognized. However, the existing studies mainly focus on the effect of TTMhypo on the mortality and neurological outcome of patients with severe neurological diseases in ICU. There is no large clinical study on the effect of targeted temperature management (TTM) on cerebral autoregulation in patients with severe neurological diseases. Due to the controversy of TTMhypo on mortality and neurological outcome, this study aime to reduce the patient's core temperature to normal. Patients with severe neurological disorders who still had cerebral autoregulation dysfunction, had fever, and needed to reduce the core temperature to normal. Therefore, the effect of TTMnorm on cerebral autoregulation before and during cooling was observed.The main measures were the THRR, Mx and TOx during cooling. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT04728438
Study type Observational
Source Xiangya Hospital of Central South University
Contact Lina Zhang, PhD
Phone +8615874875763
Email zln7095@163.com
Status Not yet recruiting
Phase
Start date January 22, 2021
Completion date July 1, 2021

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