• C E Klopfenstein, G Gaggero, C Mamie, P Morel, and A Forster.
• Department of Anaesthesiology, University Hospital of Geneva, Switzerland.
• Can J Anaesth. 1995 Jun 1;42(6):523-5.

AbstractThe case of a healthy 59-yr-old man who underwent elective laparoscopic extraperitoneal inguinal hernia repair and general anaesthesia is presented. After one hour of surgery, a sudden increase in the FETCO2 from 5.0% to 9.4% in relation to a massive subcutaneous emphysema, but without any haemodynamic instability, was noticed. The acute rise of FETCO2 was the first sign of an abnormal event. Nevertheless, subcutaneous emphysema was diagnosed with chest wall examination and palpation. Subcutaneous emphysema and hypercarbia are potential complications of laparoscopic surgery, but are more likely to occur in extraperitoneal surgery, since insufflated CO2 can diffuse easily into the surrounding tissues. High insufflation pressures will increase chances of this occurring and was the most likely cause of this complication. This case encouraged us to make recommendations for the management of laparoscopic extraperitoneal surgery which included: monitoring of CO2 insufflation pressure, routine examination and palpation of chest wall, use of N2O with caution, adjusting ventilation to physiological FETCO2 and excluding other causes of subcutaneous emphysema and hypercarbia.

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