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Fig. 4 | Chinese Neurosurgical Journal

Fig. 4

From: Hypoperfusion assessed by pressure reactivity index is associated with delayed cerebral ischemia after subarachnoid hemorrhage: an observational study

Fig. 4

Example of PRx reflecting cerebrovascular reactivity at different levels of CPP (in a 20-min period). a At the mean CPP was 55 mmHg, PRx was around 0.5 abidingly. b At the mean CPP was 90 mmHg level, PRx was greater than 0 continuously and the mean PRx value was more over 0.5. c At the mean CPP was CPPopt (65–70 mmHg), the phenomenon of random fluctuation of PRx at 0 was observed. It reveals difference of cerebrovascular reactivity at varied CPP

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Chinese Neurosurgical Journal

ISSN: 2057-4967

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