Gandhi S K, Munshi C A, Coon R, Bardeen-Henschel A
Department of Anesthesiology, Medical College of Wisconsin, Milwaukee.
J Clin Monit. 1991 Jan;7(1):35-8. doi: 10.1007/BF01617896.
A patient is described in whom migration of an endotracheal tube into the right main bronchus was suspected when end-tidal carbon dioxide suddenly decreased from 28 to 22 mm Hg. Acute changes with migration of the endotracheal tube into the main bronchus were also studied in an animal experimental model. End-tidal carbon dioxide decreased and tracheal (inflation) pressure increased, with no change in tidal volume. Arterial blood gases showed time-dependent decreases in pH and oxygen tension and an increase in carbon dioxide tension.
描述了一名患者，当呼气末二氧化碳突然从28mmHg降至22mmHg时，怀疑气管内导管移入右主支气管。还在动物实验模型中研究了气管内导管移入主支气管的急性变化。呼气末二氧化碳降低，气管（充气）压力升高，潮气量无变化。动脉血气显示pH值和氧分压随时间降低，二氧化碳分压升高。
