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Derivation and Validation of a Risk Stratification System for Predicting Postoperative Cognitive Impairment
Yan Liao1, Xunling Su1, Wen Ouyang1
1Department of Anesthesiology, The Third Xiangya Hospital, Central South University, Changsha, China.
Summary
A new PreOp-BFS score helps identify elderly patients at high risk for postoperative cognitive impairment after non-cardiac surgery. This tool aids in early screening and targeted prevention strategies.
Area of Science:
- Geriatric Medicine
- Neuroscience
- Surgical Outcomes
Background:
- Postoperative cognitive impairment (POCD and POD) is a significant concern in elderly patients undergoing non-cardiac surgery.
- Effective risk stratification is needed for early identification and prevention.
Purpose of the Study:
- To establish and validate the Pre-Operative Brain Fragility Score (PreOp-BFS) for predicting postoperative cognitive impairment in elderly patients.
- To identify preoperative risk factors for cognitive decline post-surgery.
Main Methods:
- Literature search of PubMed and ScienceDirect (1994-2017) for preoperative risk factors.
- Construction of a risk scoring system (PreOp-BFS) for elderly patients (≥60 years) undergoing non-cardiac surgery.
- Validation using test data (49 POCD, 31 no POCD).
Main Results:
- The PreOp-BFS score ranges from 0 to 8.
- Cognitive impairment incidence: 16.2% (low risk), 62.9% (medium risk), 96.2% (high risk).
- ROC analysis showed an AUC of 0.862, indicating good predictive value.
Conclusions:
- The PreOp-BFS is a validated tool for predicting postoperative cognitive impairment in elderly patients.
- It facilitates rapid screening of high-risk individuals.
- Enables targeted perioperative prevention strategies to mitigate cognitive decline.
