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In an attempt to reduce pain after laparoscopy, presumed to be due to persistence of CO₂ in the peritoneal cavity especially under the diaphragm, women were kept 30° head down for 30 min immediately after operation. By random selection 67 treated patients were compared with 64 kept flat, postoperative symptoms being recorded at fixed times for 3 days. Although tilting was found to be of no significant benefit there were two useful findings. In both groups there was a significant fall in the frequency of upper abdominal pain during the first postoperative night from about 53% to about 25%, followed by a rise after returning home on the first postoperative day to about 60% and only a slow fall in the next 2 days. The severity of pain followed the same pattern. Patients should be warned to expect increased pain on ambulation after leaving hospital. Also, there was doubling in lower abdominal pain during the first 6 h …