Bhende M S, Thompson A E, Howland D F
University of Pittsburgh School of Medicine, PA.
Crit Care Med. 1991 Apr;19(4):566-8. doi: 10.1097/00003246-199104000-00020.
the most reliable methods for confirming endotracheal tube placement are direct visualization of passage through the vocal cords and documentation of CO2 in the expired gas. We evaluated the use of a disposable colorimetric CO2 detector for verifying endotracheal tube position in small animals. The end-tidal CO2 (Petco2) detector was tested in 11 piglets with the endotracheal tube sequentially in the trachea, the esophagus, the esophagus with a carbonated beverage in the stomach, the esophagus after bag-mask ventilation. Endotracheal tube position was confirmed in all cases by direct visualization and capnometry.
The Petco2 detector identified the tube placement accurately in all 54 (21 tracheal, 33 esophageal) intubations (p less than .001).
This disposable Petco2 detector is highly sensitive and specific for verifying endotracheal tube placement in this nonarrest piglet model.
确认气管内导管位置最可靠的方法是直接观察导管通过声带的情况以及记录呼出气体中的二氧化碳。我们评估了一种一次性比色法二氧化碳检测器在小动物中验证气管内导管位置的应用。在11只仔猪中测试了呼气末二氧化碳（Petco2）检测器，气管内导管依次置于气管、食管、胃内有碳酸饮料的食管、面罩通气后的食管。所有病例均通过直接观察和二氧化碳监测法确认气管内导管位置。
Petco2检测器在所有54次（21次气管插管、33次食管插管）插管中均准确识别了导管位置（p小于0.001）。
在这种非心跳骤停仔猪模型中，这种一次性Petco2检测器在验证气管内导管位置方面具有高度敏感性和特异性。
