Impact of Frailty on Short-Term Outcomes of Hepatic Lobectomy in Patients with Intrahepatic Cholangiocarcinoma: Evidence from the US Nationwide Inpatient Sample 2005-2018.

ABSTRACT

INTRODUCTION: This study aimed to evaluate associations between frailty and outcomes in patients with intrahepatic cholangiocarcinoma (ICC) undergoing hepatic lobectomy using a large, nationally representative sample. METHODS: This population-based, retrospective observational study extracted the data of adults ≥20 years old with ICC undergoing hepatic lobectomy from the US Nationwide Inpatient Sample database between 2005 and 2018. Frailty was assessed by the validated Hospital Frailty Risk Score (HFRS). Associations between frailty and surgical outcomes were analyzed using logistic regression analyses. RESULTS: After exclusions, 777 patients were enrolled, including 427 frail and 350 non-frail. Patients' mean age was 64.5 (±0.4) years and the majority were males (51.1%) and whites (76.5%). Frailty was significantly associated with increased odds of in-hospital mortality (aOR 18.51, 95% CI 6.70, 51.18), non-home discharge (aOR 3.58, 95% CI 2.26, 5.66), prolonged LOS (aOR 5.56, 95% CI 3.87, 7.99), perioperative cardiac arrest/stroke (aOR 5.44, 95% CI 1.62, 18.24), acute respiratory distress syndrome (ARDS)/respiratory failure (aOR 3.88, 95% CI 2.40, 6.28), tracheostomy/ventilation (aOR 3.83, 95% CI 2.23, 6.58), bleeding/transfusion (aOR 1.67, 95% CI 1.24, 2.26), acute kidney injury (AKI) (aOR 14.37, 95% CI 7.13, 28.99), postoperative shock (aOR 4.44, 95% CI 2.54, 7.74), and sepsis (aOR 11.94, 95% CI 6.90, 20.67). DISCUSSION/CONCLUSION: Among patients with ICC undergoing hepatic lobectomy, HFRS-defined frailty is a strong predictor of worse in-patient outcomes, including in-hospital death, prolonged LOS, unfavorable discharge, and complications (perioperative cardiac arrest/stroke, ARDS/respiratory failure, tracheostomy/ventilation, bleeding/transfusion, AKI, postoperative shock, and sepsis). Study results may help stratify risk in frail patients undergoing hepatic resection for ICC.