Puolakka J J, Jousela I T
Department of Anaesthesia, Helsinki University Central Hospital, Finland.
Int J Clin Monit Comput. 1994 Nov;11(4):217-22. doi: 10.1007/BF01139873.
Sidestream spirometry has enabled continuous on-line monitoring of the pulmonary mechanics in intubated patients. We studied the effect of the heat and moisture exchange filter (HMEF) on the displayed spirometry values of a commercial multiparameter pulmonary monitor in 35 stable ICU patients needing mechanical ventilatory support. There were statistically significant differences in tidal volumes, airway pressures, compliances and end-tidal CO2-values between the two sites of measurements on both sides on the HMEF. The effect of the HMEF was linear in almost every patient. However, the change of the displayed values was clinically of minor importance. In conclusion, we suggest that the HMEF can be safely used between the patient and the monitoring site in routine ventilatory monitoring of ICU patients.
旁流肺量计能够对插管患者的肺力学进行连续在线监测。我们研究了热湿交换过滤器（HMEF）对35名需要机械通气支持的稳定ICU患者使用的商用多参数肺监测仪所显示的肺量计值的影响。在HMEF两侧的两个测量部位之间，潮气量、气道压力、顺应性和呼气末二氧化碳值存在统计学上的显著差异。几乎在每个患者中，HMEF的影响都是线性的。然而，所显示值的变化在临床上重要性较小。总之，我们建议在ICU患者的常规通气监测中，HMEF可安全地用于患者与监测部位之间。
