Impact of the Timing of Endoscopic Retrograde Cholangiopancreatography for the Treatment of Acute Cholangitis: A Meta-analysis and Systematic Review

The optimal timing for endoscopic retrograde cholangiopancreatography (ERCP) for acute cholangitis (AC) has not been unequivocally established.To perform a meta-analysis of the outcomes associated with particular timings of ERCP for AC.A systematic literature search was conducted for studies of ERCP for AC, and then a meta-analysis of the in-hospital mortality (IHM), 30-day mortality, and length of hospital stay (LHS) was performed.Seven non-randomized studies of 88,562 patients were considered appropriate for inclusion. Compared with performing ERCP more than 24 hours after admission, ERCP within 24 hours was associated with lower IHM ( P0.0004), but no difference in 30-day mortality ( P =0.38) was found between the 2 groups. ERCP performed48 hours after admission was associated with a lower IHM and 30-day mortality ( P0.00001 and P =0.03) than ERCP performed48 hours after admission. In addition, ERCP performed within 24 or 48 hours was associated with a shorter LHS ( P0.00001 and P0.00001, respectively).ERCP within 48 hours of admission is superior to subsequent ERCP with respect to IHM, 30-day mortality, and LHS, and ERCP performed within 24 hours is associated with lower IHM and LHS.