Shoulder pain is common after laparoscopic surgeries. multiple maneuvers are in use to decrease its incidence with variable results. This study aims to investigate the effect of mild hyperventilation to an End-tidal CO2 level of 30-32 mmHg on the occurrence of postoperative shoulder pain. This is carried out through a comparison of the incidence of postoperative shoulder pain an intervention group to that in a control one with a normal End Tidal CO2 35-40 mmHg). controlling for all other variables.
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Postoperative shoulder Pain
Timeframe: 3 months