高齢腹部手術患者における術後せん妄の予測因子としての改訂リスク分析指数：前向き観察コホート研究

To explore the association between revised-Risk Analysis Index (RAI-rev) and postoperative delirium (POD) in older patients undergoing elective abdominal surgery.

From March 2024 to August 2024, patients aged 65 years and older scheduled for elective abdominal surgery were included in the study. Both univariate and multivariate logistic regression analyses were conducted to investigate the relationship between POD and the RAI-rev scores. Afterwards, we applied propensity score matching (PSM) analysis to mitigate the potential bias from covariates.

We prospectively enrolled 163 consecutive patients. Independent risk factors identified by multivariate regression analysis included RAI-rev, Nutrition Risk Screening 2002 (NRS 2002) and triglyceride. RAI-rev presented the maximum area under curve of 0.790. Meanwhile, the predictive value of RAI-rev still existed after PSM.

The RAI-rev, NRS 2002 and triglyceride were independently associated with POD in older abdominal surgery patients. Particularly, the RAI-rev was proved to be a more effective predictor of POD incidence.