Archives of Critical Care Medicine

The reported case was a 27 - year - old male with upper maxilla squamous cancer that had undergone reconstruction with Latissimus dorsi flap. The surgery patient in lateral position experienced arterial oxygen saturation drop once, which was increased after a few minutes up to about 96% to 97%. At the end of surgery, the awake and alert patient was delivered to the recovery room. Ten minutes later, he was affected by SPO2 drop up to 90% to 93% and tachycardia, PR = 122, without respiratory distress. In auscultation, respiratory noise reduction was clear in the right hemi-thorax. Chest X - ray was taken and pneumothorax conformation chest tube No 28 was embedded in the emergency room by surgery services