Machine Learning-Based Analysis in the Management of Iatrogenic Bile Duct Injury During Cholecystectomy: a Nationwide Multicenter Study

BACKGROUND

Iatrogenic bile duct injury (IBDI) is a challenging surgical complication. IBDI management can be guided by artificial intelligence models. Our study identified the factors associated with successful initial repair of IBDI and predicted the success of definitive repair based on patient risk levels.

METHODS

This is a retrospective multi-institution cohort of patients with IBDI after cholecystectomy conducted between 1990 and 2020. We implemented a decision tree analysis to determine the factors that contribute to successful initial repair and developed a risk-scoring model based on the Comprehensive Complication Index.

RESULTS

We analyzed 748 patients across 22 hospitals. Our decision tree model was 82.8% accurate in predicting the success of the initial repair. Non-type E (p < 0.01), treatment in specialized centers (p < 0.01), and surgical repair (p < 0.001) were associated with better prognosis. The risk-scoring model was 82.3% (79.0-85.3%, 95% confidence interval [CI]) and 71.7% (63.8-78.7%, 95% CI) accurate in predicting success in the development and validation cohorts, respectively. Surgical repair, successful initial repair, and repair between 2 and 6 weeks were associated with better outcomes.

DISCUSSION

Machine learning algorithms for IBDI are a novel tool may help to improve the decision-making process and guide management of these patients.

Long-term outcomes in the repair of intrahepatic iatrogenic bile duct lesions using a combined intraglissonian and extraglissonian approach

PURSPOSE

Iatrogenic bile duct injuries (IBDI) with intrahepatic involvement are a serious and challenging surgical complication that can have disastrous consequences in terms of morbidity and mortality.

METHODS

We collected the patients with IBDI type (E4) between January 1991 and March 2020 in our hospital. The objective of the study was to present the long-term results of a extraglissonian approach and intraglissonian biliary reconstruction in a series of patients with intrahepatic bile duct injuries after cholecystectomy. We also detail our preoperative management and the standardization of the technique.

RESULTS

An extraglissonian approach with partial hepatic resection of the base of segments 4b and 5 and intraglissonian Roux-en-Y hepaticojejunostomy for biliary reconstruction using to several branches was performed in 10 patients with E4 Strassberg type intrahepatic lesions. Only one patient had postoperative bile leak (Clavien 3a). Surgical time was 260 min (IQR, 210-490). We left transanastomotic catheter (between 2 and 5) in situ for 3 and 6 months after surgery. The patients remained asymptomatic over a median follow-up of 169 months (IQR 129-234).

CONCLUSION

This biliary reconstruction technique obtains positive long-term outcomes in patients with severe intrahepatic lesions.

Textbook outcome in patients with biliary duct injury during cholecystectomy

BACKGROUND

Iatrogenic bile duct injury (BDI) during cholecystectomy is associated with a complex and heterogeneous management owing to the burden of morbidity until their definitive treatment. This study aimed to define the textbook outcomes (TOs) after BDI with the purpose to indicate the ideal treatment and to improve it management.

METHODS

We collected data from patients with an BDI between 1990 and 2022 from 27 hospitals. TO was defined as a successful conservative treatment of the iatrogenic BDI or only minor complications after BDI or patients in whom the first repair resolves the iatrogenic BDI without complications or with minor complications.

RESULTS

We included 808 patients and a total of 394 patients (46.9%) achieved TO. Overall complications in TO and non-TO groups were 11.9% and 86%, respectively (P < .001). Major complications and mortality in the non-TO group were 57.4% and 9.2%, respectively. The use of end-to-end bile duct anastomosis repair was higher in the non-TO group (23.1 vs 7.8, P < .001). Factors associated with achieving a TO were injury in a specialized center (adjusted odds ratio [aOR], 4.01; 95% CI, 2.68-5.99; P < .001), transfer for a first repair (aOR, 5.72; 95% CI, 3.51-9.34; P < .001), conservative management (aOR, 5.00; 95% CI, 1.63-15.36; P = .005), or surgical management (aOR, 2.45; 95% CI, 1.50-4.00; P < .001).

CONCLUSION

TO largely depends on where the BDI is managed and the type of injury. It allows hepatobiliary centers to identify domains of improvement of perioperative management of patients with BDI.

Vascular injury during cholecystectomy: A multicenter critical analysis behind the drama

BACKGROUND

The management of a vascular injury during cholecystectomy is still very complicated, especially in centers not specialized in complex hepatobiliary surgery.

METHODS

This was a multi-institutional retrospective study in patients with vascular injuries during cholecystectomy from 18 centers in 4 countries. The aim of the study was to analyze the management of vascular injuries focusing on referral, time to perform the repair, and different treatments options outcomes.

RESULTS

A total of 104 patients were included. Twenty-nine patients underwent vascular repair (27.9%), 13 (12.5%) liver resection, and 1 liver transplant as a first treatment. Eighty-four (80.4%) vascular and biliary injuries occurred in nonspecialized centers and 45 (53.6%) were immediately transferred. Intraoperative diagnosed injuries were rare in referred patients (18% vs 84%, P = .001). The patients managed at the hospital where the injury occurred had a higher number of reoperations (64% vs 20%, P ˂ .001). The need for vascular reconstruction was associated with higher mortality (P = .04). Two of the 4 patients transplanted died.

CONCLUSION

Vascular lesions during cholecystectomy are a potentially life-threatening complication. Management of referral to specialized centers to perform multiple complex multidisciplinary procedures should be mandatory. Late vascular repair has not shown to be associated with worse results.