techer： Oxygen therapy has been used in patient care in the 18th century and today it is used in almost all forms of acute respiratory failure.

　　Student： How many linds of equipment are used to deliver oxygen to patient？

　　T： There are three functional groups which are designed to deliver oxygen to the spontaneously breathing patient：

　?、貴ace masks.

　?、贜asal cannulae.

　　③Tents and boxes.

　　S： Is humidification very important？

　　T： Yes， the most well known example is the woulfe bottle. It works simply by bubbling the dry gas through water at room temperature.

　　老師：吸氧治療在18世紀(jì)就開始應(yīng)用了。今天差不多用于所有形式的急性呼吸衰竭。

　　學(xué)生：有多少種設(shè)備可用來為病人輸氧？

　　老師：為自動(dòng)呼吸的病人輸送氧氣的設(shè)備有三組：

　?、傺跽?。

　?、诒枪?。

　?、垩鯕鈳ぜ把鯕夂小?

　　學(xué)生：濕化很重要嗎？

　　老師：是的，最常用的是濕化瓶，它只是在室溫下把干燥的氧氣在水瓶中濾過。