Accuracy of ultrasound-measured pulsatility index of central retinal artery in diagnosing low cerebral perfusion pressure in patients with traumatic brain injury
10.3760/cma.j.cn131073.20200413.00724
- VernacularTitle:超声测定视网膜中央动脉搏动指数诊断颅脑损伤患者低脑灌注压的准确性
- Author:
Yanjun DENG
1
;
Mengnan YU
;
Hua LI
;
Mingzhu XU
;
Xu ZHENG
;
Chen WANG
Author Information
1. 南京医科大学附属苏州科技城医院麻醉科 215153
- From:
Chinese Journal of Anesthesiology
2020;40(7):867-869
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate the accuracy of ultrasound-measured pulsatility index (PI) of central retinal arteries in diagnosing low cerebral perfusion pressure (CPP) in the patients with traumatic brain injury.Methods:Fifty-five patients who were admitted to the surgical intensive care unit due to traumatic brain injury with continuous intracranial pressure monitoring were selected.At 72 h after surgery, continuous incracranial pressure and mean arterial pressure were recorded, and peak systolic velocity and end diastolic velocity of central retinal arteries were measured by ultrasound.The invasive CPP and PI were calculated.The correlation between PI and CPP was analyzed.The accuracy of central retinal pulse index in diagnosing low CPP was evaluated by the receiver operating characteristic curve.Results:PI was negatively correlated with CPP ( r=-0.655, P<0.01). The area under the receiver operating characteristic curve of PI in diagnosing low CPP was 0.863 (95% confidence interval 0.761-0.965), and the threshold value was 0.97, sensitivity 92.3%, and specificity 66.7%. Conclusion:Ultrasound-measured PI is more accurate in diagnosing low CPP in the patients with traumatic brain injury.
