Study Status: Completed
Recruit Status: Completed
Study Type: Interventional
Official Title: The Effects of High Frequency Jet Ventilation on Intra-ocular Pressure During Laparoscopic Operations (Lap. Cholecystectomy) With Positive Pressure Pneumoperitoneum
Brief Summary:
Background: Positive pressure pneumoperitoneum (PP) may involve adverse pathophysiological changes, including increased intra-thoracic and ocular pressure, when combined with standard ventilation. High frequency jet ventilation (HFJV) was reported to reduce the adverse cardiovascular effects during laparoscopic cholecystectomy.
Aim: To study the effects of HFJV on intra-ocular pressure changes (reflecting intra-cranial pressure) during laparoscopic surgery under PP.