Dhruva S A, Dhamee M S, Hensler T
Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, WI 53226.
J Clin Monit. 1988 Apr;4(2):122-4. doi: 10.1007/BF01641814.
In several cases, a mass spectrometer indicated that both enflurane and isoflurane were being detected while only isoflurane was in use. The concentration of expired enflurane reported was always higher than the inspired concentration, but never exceeded 0.66% regardless of the concentration of isoflurane. Such mass spectrometer readings may be evidence of vaporizer contamination or malfunction of the vaporizer; however, in this case, the mass spectrometer was found to be out of calibration. Because mass spectrometers are recent additions to clinical equipment, procedures for routine calibration and maintenance must be carefully scrutinized and evaluated.
在几起案例中，一台质谱仪显示，虽然仅使用了异氟烷，但同时检测到了恩氟烷和异氟烷。报告的呼出恩氟烷浓度始终高于吸入浓度，但无论异氟烷浓度如何，该浓度从未超过0.66%。此类质谱仪读数可能是蒸发器污染或蒸发器故障的证据；然而，在本案例中，发现质谱仪校准不当。由于质谱仪是临床设备中的新成员，必须仔细审查和评估常规校准和维护程序。
