摘要
Dear editor,A young lady in her early 20s presented acutely with shortness of breath with her oxygen saturations on room noted to be mid to 70%with normal respiratory rate,and blue discolouration of the lips(Figure 1).The relevant past medical history and surgical history included well controlled asthma and a laparoscopic salpingectomy for ectopic pregnancy approximately 3 weeks previously.The only relevant recent history was use of cocaine over the preceding 48 hours.
