Inguinal hernia repair: are ASA grades 3 and 4 patients suitable for day case hernia repair?

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Abstract
The American Society of Anaesthesiologists (ASA) 3 and 4 patients are generally considered unsuitable for day case hernia repair. There are minimal data regarding the acceptability of day case repair in these patients. This study analysed day case hernia rates with special emphasis on ASA grades. A retrospective review of all adult inguinal hernia repairs, under the care of one surgeon over a 9-year period, was performed. The data collected included demographics, ASA grades, the mode of anaesthesia and early complications. 577 patients underwent inguinal hernia repair during the study period. 204 (35%) patients were ASA grade 1, 214 (37%) ASA grade 2, 132 (23%) ASA grade 3 and 29 (5%) ASA grade 4. Day case rates for ASA grades 1–4 under LA were 86, 83, 77 and 76% and under GA, 59, 36, 32 and 0%, respectively (P<0.05). There was no significant difference in the wound complication rates for different ASA grades under GA and LA. ASA grades 3 and 4 patients can undergo day case inguinal hernia repair, with similar complication rates to ASA grades 1 and 2 patients, when surgery is performed under local anaesthesia. ASA grades 3 and 4 patients need not be excluded from day case hernia repair.