Abstract
PURPOSE: Abdominal surgeries interfere with pulmonary mechanics and may induce restrictive ventilatory changes. Such restriction in peritoneal manipulation is possibly due to the manipulation of the viscera, causing reflex inhibition of the phrenic nerve and subsequent temporary paresis of the diaphragm muscle. The procedures that affect pulmonary function include videolaparoscopic surgeries, such as those performed for cholecystectomy (CC) and anti-reflux valve (ARV) placement that, despite allowing fast recovery, low pain and minimal visceral manipulation, require a pneumoperitoneum which increases intra-abdominal pressure and lead to atelectasis of pulmonary bases overlapping ventilatory mechanical deficit.
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