ObjectiveTo investigate the clinical significances of intraoperative methylene blue diluent injection through the residual bile duct for bile leakage after hepatic hydatidosis surgery.MethodsThe patients with hepatic hydatidosis who received the surgical treatment in this hospital from December 2018 to November 2019 were randomly divided into a study group and control group. The patients in the study group received the treatment of anatomical or nonanatomical hepatic lobectomy. The first hepatic hilum was locked, then the methylene blue diluent was injected through the residual bile duct to find the bile leakage. The drainage tube was retained in the abdominal cavity after the surgery. The patients in the control group except the white gauze was used to compress the liver wound surface for 5 min to find the bile leakage, the other treatment process was the same as the study group. The operation time, intraoperative blood loss, liver function on day 3 after the surgery (total bilirubin, alanine aminotransferase, albumin), detection rate of bile leakage during operation, postoperative complications (pulmonary infection, ascites, incision infection, bile leakage, residual cavity infection, and electrolyte disturbance), postoperative hospitalization time, and total hospitalization cost were compared between two groups.ResultsAccording to the inclusion and exclusion criteria, 67 patients were included in this study, including 32 in the study group and 35 in the control group. There were no significant differences in the baseline data such as the age, gender, preoperative complications, preoperative liver function (total bilirubin, alanine aminotransferase, albumin), and liver hydatid classification between the two groups (P>0.05). The operations were successful in the 67 patients, no perioperative death occurred. The detection rate of bile leakage during operation in the study group was higher than that in the control group (53.1% versus 17.1%, P<0.05). The postoperative hospitalization time was shorter and the total hospitalization cost was lower in the study group as compared with the control group (P<0.05). There were no significant differences in the operation time, intraoperative blood loss, liver function on day 3 after the surgery between the two groups (P>0.05). There was no case of the incision infection, bile leakage, and residual cavity infection in the study group, but there were 1, 5 and 4 cases in the control group, respectively. The incidences of incision infection and bile leakage had statistical significances between the two groups (P<0.05), and there was no significant differences in the incidences of other complications between the two groups (P>0.05).ConclusionsDetection rate of bile leakage during operation is high by intraoperative methylene blue diluent injection through the residual bile duct for bile leakage after hepatic hydatidosis surgery. It could reduce bile leakage, shorten postoperative hospitalization time, and reduce total hospitalization cost.