Anaes SAQs · General surgery anaesthesia
Laparoscopic general surgery: pneumoperitoneum physiology and anaesthesia
Final-examination SAQ for laparoscopic-generalsurgery-anaesthesia.
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ANZCAFRCAEDAICABAFCAI
Prompt
Outline cardiopulmonary effects of CO2 pneumoperitoneum and management of suspected gas embolism.
Model answer
Effects (5). Raised IAP with pressure-and-position-correlated circulatory changes, raised airway pressures with atelectasis, CO2 absorption, SVR up, venous return variable — below-12 mmHg limits changes for fragile patients.[3]
Ventilation (5). Increase minute ventilation per the protective-ventilation rationale with end-tidal CO2 monitoring; check tube depth after tilt; PEEP thoughtfully.[4][2]
Embolism (5). Taught stop-gas-first drill within the prevention-and-treatment scope: stop gas, 100% O2, support, positioning, ACLS if needed.[3]
References4ShowHide
- [1]He J, Pan X. Carbon dioxide laparoscopic technology: research hotspots and innovations in pneumoperitoneum detection. Med Gas Res, 2026.PMID 41888042
- [2]Silveira SQ, Pereira SM, da Silva LM, et al. Effect of PEEP titration on the incidence of elevated driving pressure in laparoscopic bariatric surgery. BMC Anesthesiol, 2026.PMID 42288733
- [3]Gutt CN et al. Circulatory and respiratory complications of carbon dioxide insufflation. Dig Surg, 2004.PMID 15010588
- [4]Valenza F et al. Management of mechanical ventilation during laparoscopic surgery. Best Pract Res Clin Anaesthesiol, 2010.PMID 20608559