Background/aims: Need for abdominal drains after liver resection is debated. However, unrecognized bile leak is relatively frequent: to prevent bile collection we adopted the use of long-term drains. The aim of this study was to validate this policy checking the bilirubin concentration in the drain discharge and serum along the postoperative course.
Methodology: A prospective cohort study enrolling 58 consecutive patients with liver tumors was carried out. All patients underwent liver resection and received abdominal drains which were maintained for at least 7 days postoperatively. The bilirubin concentration in serum and drain discharge was sampled on the 3rd, 5th and 7th postoperative days.
Results: No postoperative mortality and major morbidity were observed. The bilirubin level in drain discharge was higher on the 5th postoperative day than on the 3rd and 7th postoperative days: difference between the 3rd and 5th postoperative days was significant. No differences were observed among serum bilirubin levels on 3rd, 5th and 7th postoperative days.
Conclusions: The bilirubin level in drain discharge increases late in the postoperative course. Therefore, bile leakage should be evaluated between the 5th and 7th postoperative days. The use of long-term drains helps protect against undiscovered collections and thus impacts postoperative course.