Huang YK, Lin CK, Wang CC, Kuo JR, Lai CF, Chen CW, Lin BS. A novel wireless optical technique for quantitative evaluation of cerebral perfusion pressure in a fluid percussion animal model of traumatic brain injury.
Quant Imaging Med Surg 2021;
11:2388-2396. [PMID:
34079709 DOI:
10.21037/qims-20-777]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Background
Cerebral perfusion pressure (CPP) calculated by mean arterial pressure (MAP) minus intracranial pressure (ICP) is related to blood flow into the brain and reflects cerebral ischemia and oxygenation indirectly. Near-infrared spectroscopy (NIRS) can assess cerebral ischemia and hypoxia non-invasively and has been widely used in neuroscience. However, the correlation between CPP and NIRS, and its potential application in traumatic brain injury, has seldom been investigated.
Methods
We used a novel wireless NIRS system and commercial ICP and MAP devices to assess the trauma to rat brains using different impact intensity. The relationship between CPP and NIRS parameters with increasing impact strength were investigated.
Results
The results showed that changes in CPP (∆CPP), oxy-hemoglobin {∆[HbO2]}, total-hemoglobin {∆[HbT]}, and deoxy-hemoglobin were inversely proportional to the increase in impact intensity, and the correlations between ∆CPP, NIRS parameters {∆[HbO2], and ∆[HbT]} were significant.
Conclusions
The NIRS system can assess cerebral ischemia and oxygenation non-invasively and changes of HbO2 and HbT may be used as reference parameters to assess the level of CPP in an animal model of traumatic brain injury.
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