Duration of Antimicrobial Prophylaxis in Patients Undergoing Major Hepatectomy With Extrahepatic Bile Duct Resection: A Randomized Controlled Trial

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To evaluate the optimal duration of antimicrobial prophylaxis in patients undergoing “complicated”’ major hepatectomy with extrahepatic bile duct resection.


To date, 4 randomized controlled trials (RCTs) have assessed the duration of antimicrobial prophylaxis after hepatectomy. However, all of these previous studies involved only “simple” hepatectomy without extrahepatic bile duct resection.


Patients with suspected hilar obstruction scheduled to undergo complicated hepatectomy after biliary drainage were randomized to 2-day (antibiotic treatment on days 1 and 2) or 4-day (on days 1 to 4) groups. Antibiotics were selected based on preoperative bile culture. The primary endpoint was the incidence of postoperative infectious complications.


In total, 86 patients were included (43 patients in each arm) without between-group differences in baseline characteristics. Bile culture positivity was similar between the 2 groups. No significant between-group differences were observed in surgical variables. The incidence of any infectious complications was similar between the 2 groups (30.2% in the 2-day group and 32.6% in the 4-day group). The positive rate of systemic inflammatory response syndrome and the incidence of additional antibiotic use were almost identical between the 2 groups. According to Clavien-Dindo classification, grade 3a or higher complications occurred in 23 patients (53.5%) in the 2-day group and 29 patients (67.4%) in the 4-day group (P = 0.186). Postoperative hospital stay was not different between the 2 groups.


Two-day administration of antimicrobial prophylaxis is sufficient for patients undergoing hepatectomy with extrahepatic bile duct resection [Registration number: ID 000009800 (University Hospital Medical Information Network, http://www.umin.ac.jp)].

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