氧合器废气二氧化碳监测：一种在体外循环期间估算动脉血二氧化碳分压的方法。

Oxygenator exhaust capnography: a method of estimating arterial carbon dioxide tension during cardiopulmonary bypass.

作者信息

Zia M, Davies F W, Alston R P, Anaes F C

机构信息

Department of Anesthesia, Glasgow Royal Infirmary, Scotland.

出版信息

J Cardiothorac Vasc Anesth. 1992 Feb;6(1):42-5. doi: 10.1016/1053-0770(91)90043-s.

DOI:10.1016/1053-0770(91)90043-s

PMID:1543852

Abstract

An in vivo study was undertaken during hypothermic (28 degrees C) cardiopulmonary bypass to compare oxygenator exhaust capnography as a means of estimating arterial carbon dioxide tension (PaCO2) with bench blood gas analysis. A total of 123 pairs of measurements were made in 40 patients. Oxygenator exhaust capnographic measurements systematically underestimated PaCO2 measured by a bench blood gas analyzer. During the cooling and stable hypothermic phases of cardiopulmonary bypass, the relationship was reasonably accurate, but became far more variable during rewarming. Oxygenator exhaust capnography could be used as an inexpensive means of continuously monitoring PaCO2 during the cooling and stable hypothermic phases of cardiopulmonary bypass but should not be used during rewarming.

摘要

进行了一项体内研究，在低温（28摄氏度）体外循环期间，将氧合器排气二氧化碳监测作为一种估计动脉血二氧化碳分压（PaCO2）的方法，与台式血气分析进行比较。在40名患者中总共进行了123对测量。氧合器排气二氧化碳监测测量结果系统性地低估了台式血气分析仪测得的PaCO2。在体外循环的降温及稳定低温阶段，这种关系相当准确，但在复温期间变得更具变异性。氧合器排气二氧化碳监测可作为一种廉价的方法，在体外循环的降温及稳定低温阶段连续监测PaCO2，但在复温期间不应使用。