使用Mapleson D系统在两种不同流量设置下可预测的动脉血二氧化碳分压。

Predictable PaCO2 with two different flow settings using the Mapleson D system.

作者信息

Jonsson L O

机构信息

Department of Anaesthesia and Intensive Care, Ostersund Hospital, Sweden.

出版信息

Acta Anaesthesiol Scand. 1990 Apr;34(3):237-40. doi: 10.1111/j.1399-6576.1990.tb03077.x.

DOI:10.1111/j.1399-6576.1990.tb03077.x

PMID:2111629

Abstract

Two different settings of fresh gas flow (VFG) and minute ventilation (VE) used with the coaxial Mapleson D system (Bain), were evaluated in 59 adults (ASA I-III) during controlled ventilation and different types of surgical procedures. The two flow settings (alternatives A and B) were VFG of 75 and 110 ml.min-1.kg-1 and VE of 150 and 175 ml.min-1.kg-1, aiming to generate normocapnea and mild hypocapnea, respectively. The PaCO2 obtained with alternative A was 5.5 +/- 0.5 kPa (mean +/- s.d.), with 92% of the patients within the range 4.7-6.1 kPa. With alternative B, the PaCO2 was 4.4 +/- 0.5 kPa, with 82% of the patients within the range 3.5-4.9 kPa. It is concluded that these two flow regimes are suitable for clinical use when either normocapnea or mild hypocapnea is desired.

摘要

在59名成人（ASA I-III级）接受控制通气及不同类型外科手术期间，对同轴Mapleson D系统（贝恩系统）使用的两种不同的新鲜气体流量（VFG）和分钟通气量（VE）设置进行了评估。两种流量设置（方案A和方案B）分别为VFG 75和110 ml·min⁻¹·kg⁻¹，VE 150和175 ml·min⁻¹·kg⁻¹，目标分别是产生正常碳酸血症和轻度低碳酸血症。方案A获得的动脉血二氧化碳分压（PaCO₂）为5.5±0.5 kPa（均值±标准差），92%的患者处于4.7 - 6.1 kPa范围内。方案B的PaCO₂为4.4±0.5 kPa，82%的患者处于3.5 - 4.9 kPa范围内。结论是，当需要正常碳酸血症或轻度低碳酸血症时，这两种流量模式适用于临床。