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Table 2 Clinical outcomes of the study patients

From: CO2 or air cholangiography reduces the risk of post-ERCP cholangitis in patients with Bismuth type IV hilar biliary obstruction

 ContrastAirCO2P-values
Technical success22/22 (100%)18/18 (100%)30/30 (100%)> 0.99
Clinical success16/22 (72.7%)13/18 (72.2%)23/30 (76.6%)0.472
Number of stents placed   0.697
One stent7 (31.8%)3 (16.7%)5 (16.7%) 
Two stents10 (45.5%)11 (61.1%)19 (63.3%) 
Nasobiliary drain5 (22.7%)4 (22.2%)6 (20%) 
Post-ERCP complications14 (63.6%)*#5 (27.8%)8 (26.6%)0.018
Cholangitis11 (50%)*#3 (16.7%)3 (10%)0.004
Pancreatitis2 (9.1%)2 (11.1%)4 (13.3%)> 0.99
Bleeding1 (4.5%)01 (3.3%)> 0.99
WBC 2 days post ERCP8.08 ± 2.899.48 ± 3.797.81 ± 4.170.284
Serum bilirubin at one-week post-ERCP (median, [Q1, Q3])160.39 (99.13, 221.35)141.98 (86,26, 190.76)147.55 (81.70, 209.91)0.817
Mean hospital stay duration at post-ERCP (median, [Q1, Q3])15.63 (7.89, 19.37)8.31 (5.08, 11.49)9.09 (4.37, 12.54)0.039
ERCP re-intervention during follow-up1 (4.5%)1 (5.6%)3 (10%)0.854
30-day mortality4 (18.2%)2 (11.1%)1 (3.3%)0.238
  1. *contrast vs. air, P < 0.05
  2. #contrast vs. CO2, P < 0.05