Seaton D, Yoganathan K, Coady T, Barker R
Department of Thoracic Medicine, Ipswich Hospital, Suffolk.
BMJ. 1991 Feb 2;302(6771):262-5. doi: 10.1136/bmj.302.6771.262.
To determine whether in a patient with spontaneous pneumothorax the presence or absence of a pleural leak can be shown at the time of manual aspiration by use of a marker gas. Also, to find out if the technique can predict whether manual aspiration will be successful, hence avoiding the need for intercostal tube drainage.
Prospective study of 25 episodes of pneumothorax during which patients breathed air from a Douglas bag that contained chlorofluorocarbon gases from a metered dose inhaler while the pneumothorax was aspirated.
Medical unit of a district general hospital.
22 patients who presented over nine months with acute pneumothorax.
Presence or absence of chlorofluorocarbon marker gases in the aspirate. Presence or absence of sustained re-expansion of the affected lung in the chest radiograph.
Marker gas was detected in the aspirate from 16 out of 25 pneumothoraces. Of these, 13 required intercostal tube drainage because of failure of the lung to re-expand. Marker gas was not detected in nine cases, and in all of these cases manual aspiration resulted in sustained re-expansion of the lung.
The presence or absence of a pleural leak during manual aspiration of spontaneous pneumothorax can be shown by using this technique. The absence of marker gas in the aspirate implies that manual aspiration will be successful, whereas its presence predicts, in most cases, either failure of manual aspiration to expand the lung or early re-collapse of the lung.
确定在自发性气胸患者进行人工抽气时，能否通过使用标记气体来显示胸膜瘘的存在与否。同时，探究该技术能否预测人工抽气是否会成功，从而避免进行肋间置管引流的必要性。
对25例气胸发作进行前瞻性研究，在此期间，患者在气胸抽气时从含有来自定量吸入器的氯氟烃气体的道格拉斯袋中呼吸空气。
一家区综合医院的内科病房。
22例在九个月内出现急性气胸的患者。
抽吸出的气体中是否存在氯氟烃标记气体。胸部X光片中患侧肺是否持续复张。
25例气胸中，16例的抽吸出的气体中检测到标记气体。其中，13例因肺未能复张而需要进行肋间置管引流。9例未检测到标记气体，在所有这些病例中，人工抽气均导致肺持续复张。
使用该技术可以显示自发性气胸人工抽气过程中胸膜瘘的存在与否。抽吸出的气体中不存在标记气体意味着人工抽气将成功，而其存在在大多数情况下预示着人工抽气无法使肺扩张或肺早期再次萎陷。
