The gold standard for treating acute cholecystitis is an early laparoscopic cholecystectomy. However, whether this still applies for a > 7-day existing cholecystitis remains heavily debated. Therefore, this systematic review investigates the safety of early laparoscopic cholecystectomy for a > 7-day existing cholecystitis.
PubMed and Embase were systematically searched for all studies comparing early laparoscopic cholecystectomy in patients with 0-7 versus > 7-day existing cholecystitis at time of surgery. Meta-analyses were performed on dichotomous and continuous outcomes with risk difference (RD) and mean difference (MD) as measures of effect.
A total of 3007 studies were screened, resulting in the inclusion of 13 non-randomised studies comprising 5481 patients. Of these, 4690 received cholecystectomy within 7 days, and 791 after 7 days. Operating times (MD -11.8 min; 95% CI [-18.4; -5.2]) and total hospital stay (MD -2.7 days; 95% CI [-4.0; -1.4]) were longer in the > 7-day group. However, no significant risk difference was found for combined major complications: bile duct injury/leakage and bowel injury (RD -1.0%; 95% CI [-2.3; 0.3]), for complications graded Clavien-Dindo ≥ 3 (RD -0.3%; 95% CI [-2.5; 1.9]), or for conversions (RD -1.5%; 95% CI [-3.9; 0.9]).
Early laparoscopic cholecystectomy for cholecystitis after the 7-day barrier might be harder, as reflected by longer operating times. However, a significant increase in complications or conversions was not found. Due to the risk of bias and lack of well-powered studies directly comparing early cholecystectomy after 7 days with alternative strategies, strong recommendations cannot be made. Meanwhile, it is advised to carefully weigh the treatment options in case of a > 7-day existing cholecystitis, based on patient's characteristics and surgeon's experience.