Berry F A, Ball C G, Blankenbaker W L
Anesth Analg. 1975 Jan-Feb;54(1):50-4. doi: 10.1213/00000539-197501000-00010.
The desirability of humidification of anesthesia systems for prolonged surgical procedures has been documented previously. Dry anesthetic gases damage the ciliated epithelium and cause respiratory heat loss. Chalon suggests that from 12 to 16 mg. of water/L. of gas is necessary to prevent damage to the tracheal epithelium. This study describes a method of obtaining values of from 21.5 plus or minus 0.4 to 39.3 plus or minus 0.1 mg. of water/L. by cycling the fresh gas flow through the carbon dioxide (CO2) absorber before exposure to the patient.
先前已有文献记载，对于长时间的外科手术，麻醉系统进行加湿是很有必要的。干燥的麻醉气体会损害纤毛上皮并导致呼吸道热量散失。查隆认为，为防止气管上皮受损，每升气体需要12至16毫克的水。本研究描述了一种方法，即在新鲜气流接触患者之前，使其循环通过二氧化碳（CO₂）吸收器，从而获得每升气体含21.5±0.4至39.3±0.1毫克水的值。
