[Intraoperative hyperkalemia - initial sign of an incipient compartment syndrome?].

We report the case of a 50 years old male patient who underwent an elective resection of the rectum in the Lloyd-Davis-position. During the surgery, first endoscopically and then by open laparatomy, which lasted 7.5 hours and the following postoperative time, plasma potassium concentration continuously increased up to 6.7 mval/l. On the first postoperative day, a compartment syndrome of the right lower limb was diagnosed.