Moxham J, Goldstone J
Dept of Thoracic Medicine, King's College Hospital, London, UK.
Eur Respir J. 1994 Nov;7(11):2057-61.
The measurement of respiratory muscle strength in the intensive care unit (ICU) is potentially useful for the prediction of weaning outcome. An easy and accurate measure would also allow investigation of respiratory muscle weakness in critically ill patients. At present, there is no satisfactory method of strength measurement in the intensive care unit. Vital capacity is a nonspecific, volitional and relatively insensitive measure of strength. True maximum respiratory pressures are difficult to achieve and, in stable patients, results vary greatly both over time and between observers. For these reasons, there are few good data of respiratory muscle strength in the intensive care unit. Of the new techniques being developed, magnetic stimulation of the phrenic nerves, combined with the measurement of transdiaphragmatic, oesophageal, or endotracheal tube pressure, offers the greatest promise.
在重症监护病房（ICU）测量呼吸肌力量对于预测撤机结果可能是有用的。一种简便且准确的测量方法还将有助于对危重症患者的呼吸肌无力情况进行研究。目前，在重症监护病房尚无令人满意的力量测量方法。肺活量是一种非特异性的、受意志控制且相对不敏感的力量测量指标。真正的最大呼吸压力难以达到，而且对于病情稳定的患者，其结果随时间以及不同观察者之间的差异都很大。由于这些原因，重症监护病房中关于呼吸肌力量的可靠数据很少。在正在研发的新技术中，膈神经磁刺激结合经膈、食管或气管插管压力测量，具有最大的前景。
