术后患者呼吸的氧耗。压力支持通气与持续气道正压通气的比较

Oxygen cost of breathing in postoperative patients. Pressure support ventilation vs continuous positive airway pressure.

作者信息

Viale J P, Annat G J, Bouffard Y M, Delafosse B X, Bertrand O M, Motin J P

机构信息

Service de Réanimation, Hôpital Edouard Herriot, Lyon, France.

出版信息

Chest. 1988 Mar;93(3):506-9. doi: 10.1378/chest.93.3.506.

DOI:10.1378/chest.93.3.506

PMID:3125013

Abstract

In seven postoperative patients with normal preoperative pulmonary function tests, we evaluated the oxygen cost of breathing (VO2resp) during continuous positive pressure ventilation (CPAP) and during a 15 cm H2O inspiratory pressure support ventilation (IPSV). For both periods, VO2 resp was estimated as the difference between total oxygen uptake of the period (VO2tot), measured by a mass-spectrometer system, and that during controlled ventilation. During CPAP ventilation, VO2resp was found to be 11.2 +/- 1.4 percent of VO2tot. During IPSV, VO2resp was found insignificant. It is concluded that a 15 cm H2O IPSV takes over the major part of the work of breathing in postoperative patients without preexisting pulmonary disease.

摘要

在七名术前肺功能测试正常的术后患者中，我们评估了持续气道正压通气（CPAP）期间以及15厘米水柱吸气压力支持通气（IPSV）期间的呼吸氧耗（VO2resp）。在这两个阶段，VO2resp通过质谱仪系统测量该阶段的总氧摄取量（VO2tot）与控制通气期间的总氧摄取量之间的差值来估算。在CPAP通气期间，发现VO2resp占VO2tot的11.2±1.4%。在IPSV期间，VO2resp无显著差异。得出的结论是，15厘米水柱的IPSV承担了无既往肺部疾病的术后患者呼吸工作的主要部分。