Abstract
BackgroundThe Risk Analysis Index (RAI) for frailty is a rapid survey for comorbidities and performance status, which predicts mortality after general surgery. We aimed to validate the RAI in predicting outcomes after hepatopancreatobiliary surgery. MethodsAssociations of RAI, determined in 162 patients prior to undergoing hepatopancreatobiliary surgery, with prospectively collected 30-day post-operative outcomes were analyzed with multivariate logistic and linear regression. ResultsPatients (age 62 ± 14, 51% female) had a median RAI of 7, range 0–25. With every unit increase in RAI, length of stay increased by 5% (95% CI: 2–7%), odds of ICU admission increased by 10% (0–20%), ICU length of stay increased by 21% (9–34%), and odds of discharge to a nursing facility increased by 8% (0–17%) (all P < 0.05). Particularly in patients who suffered a first post-operative complication, RAI was associated with additional complications (1.6 unit increase in Comprehensive Complication Index per unit increase in RAI, P = 0.002). In a direct comparison in a subset of 74 patients, RAI and the ACS-NSQIP Risk Calculator performed comparably in predicting outcomes. ConclusionWhile RAI and ACS-NSQIP Risk Calculator comparatively predicted short-term outcomes after HPB surgery, RAI has been specifically designed to identify frail patients who can potentially benefit from preoperative prehabilitation interventions.
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