Modified Frailty Index (mFI-5) as a prognostic tool of mortality, complications, and readmissions in patients undergoing hepatic ablation for hepatocellular carcinoma.

610 Background: Hepatocellular carcinoma (HCC) is a leading cause of cancer deaths, often diagnosed late, limiting curative options. Transarterial chemoembolization, Y-90 radioablation, radiofrequency ablation, and thermoablation are commonly used for downstaging, transplant bridging, and palliation in unresectable HCC. Frailty, linked to postoperative complications, has not been studied in hepatic ablation patients. This study evaluates the predictive value of the modified frailty index (mFI-5) for mortality, readmissions, complications, redo procedures, and discharges. Methods: We utilized the National Surgical Quality Improvement Program (NSQIP) database from 2015 to 2019, querying cases of hepatic ablation for CPT codes: 47370 (closed hepatic ablation, single site) and 47380 (open hepatic ablation, single site). Selected cases were analyzed for frailty using the mFI-5 criteria. A multivariate analysis was performed using mFI-5 frailty scores, stratified into non-frail (0), pre-frail (1), frail (2), and severely frail (3+). The outcomes analyzed included mortality, discharge to a destination other than home, major complications, minor complications, readmission, and reoperation. Results: We identified 1921 patients as: 737 non-frail, 701 pre-frail, 442 frail and 41 severely frail. The rates of readmission (5.4%), reoperation (1.4%), major (5.3%) and minor (3.5%) complications were low. Eight patients died following hepatic ablation, and 79 patients were discharged to a destination other than home. In multivariate analysis, most outcomes were not significantly associated with increasing frailty. However, discharge to a destination other than home was significantly more likely in patients with higher frailty scores. In frail patients, the odds ratio (OR) was 2.325 (95% CI 1.228–4.402), and in severely frail patients, this increased to 8.720 (95% CI 3.389–22.435). Conclusions: Hepatic ablation is generally well tolerated with low complication rates; however, frailty significantly influences postoperative outcomes. Frail and severely frail patients are more likely to be discharged to care facilities rather than returning home, suggesting that even in the absence of major complications, these patients require a higher level of post-procedural care. This underscores the need for tailored discharge planning and resource allocation based on patient frailty.