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Bispectral index monitoring in helicopter emergency medical services patients

机译：直升机紧急医疗服务患者的双光谱指数监测

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Background. Many critically ill patients are given sedatives andparalytics to facilitate aeromedical transport. Bispectral index (BIS) monitoring is a computer-derived electroencephalography (EEG) analog currently used to monitor the level of awareness of sedated patients. It gives a score of 1100, with 1 representing no brain function and100 representing a completely alert patient. Objective. To evaluate whether critically ill patients are adequately sedated during aeromedical transport. Methods. This was a prospective, observational study of a convenience sample of critically ill patients transported by helicopter. All intubated patients who received sedatives and/or paralytics to facilitate transport were eligible for enrollment by the attending clinician. Prior to liftoff, a BIS sensor was applied to the patient's forehead. Minimum, maximum, andmean BIS index scores were recorded every minute during transport. Results. Forty-seven patients (57 male) were enrolled, with a median age of 60 years (interquartile range [IQR] 1881, range 14 to 86 years). The median duration of monitoring was 15.0 minutes (IQR 6.026.0, range 2 to 33). The median BIS score was 54.6 (IQR 38.667.3, range 28 to 89.5). Only two patients (4.3, 95 confidence interval [CI] 0.5 to 14.8) had at least one BIS score greater than 85, the accepted threshold for recall. Conclusion. These results suggest that patients are adequately sedated during air medical transport.
机译：背景。许多重症患者被给予镇静剂和麻痹剂以促进航空医疗运输。双光谱指数（BIS）监视是一种计算机派生的脑电图（EEG）类似物，目前用于监视镇静患者的意识水平。它的得分为1100，其中1代表无脑功能，100代表完全机敏的患者。目的。评估在航空医疗运输过程中是否对重症患者进行了充分镇静。方法。这是对由直升机运送的重症患者的便利样本的前瞻性观察研究。所有接受了镇静剂和/或麻痹剂以便利运输的插管患者均符合主治医生的资格。提起之前，将BIS传感器应用于患者的前额。在运输过程中每分钟记录一次最小，最大和平均BIS指数得分。结果。纳入四十七名患者（57名男性），中位年龄为60岁（四分位间距[IQR] 1881，范围14至86岁）。监测的中位时间为15.0分钟（IQR 6.026.0，范围2到33）。 BIS评分中位数为54.6（IQR 38.667.3，范围为28至89.5）。只有两名患者（4.3、95置信区间[CI]为0.5至14.8）至少有一项BIS分数大于85，即公认的召回阈值。结论。这些结果表明，在空中医疗运输过程中，患者已充分镇静。

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