Screening for Lung Cancer High-risk Groups

sister's desk in a state of asphyxia. Unfortunately, despite all attempts at resuscitation, he had a cardiac arrest within ten minutes and failed to recover. Necropsy showed marked mediastinal emphysema, with some subcutaneous emphysema at the site of the operation. There was no possible source of this emphysema except from the wound. It seems most likely that the Yates drain allowed air to be aspirated into the wound on inspiration, particularly when the patient was lying in bed, and that expiration blocked the ends of the corrugated tubes, causing a ball-valve effect. This seems a potential risk of Yates drainage tubing which I think needs to be appreciated by all surgeons.-I am, etc.,