Linking the Geriatric Nutritional Risk Index to Postoperative Delirium: A Meta-Analytic Review
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By
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Dandan Han
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Yingsi Liang
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Qian Chen
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Xinyu Wang
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Xiao Chen
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April 23, 2026
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Clinical Scorecard: Linking the Geriatric Nutritional Risk Index to Postoperative Delirium: A Meta-Analytic Review
At a Glance
| Category | Detail |
|---|
| Condition | Postoperative Delirium (POD) |
| Key Mechanisms | Malnutrition linked to systemic inflammation, immune dysregulation, and neuroinflammation. |
| Target Population | Surgical patients, particularly older adults (mean age > 74 years). |
| Care Setting | Perioperative care in surgical settings. |
Key Highlights
- Low GNRI significantly increases the risk of POD (RR = 1.62).
- Stronger association in patients aged > 74 years.
- GNRI cutoffs < 98 show a higher risk of POD.
- Multivariate analyses show a weaker association than univariate analyses.
- Preoperative nutritional assessment may identify high-risk individuals.
Guideline-Based Recommendations
Diagnosis
- Use standardized criteria such as DSM or CAM for diagnosing POD.
Management
- Implement preoperative nutritional assessments using GNRI.
Monitoring & Follow-up
- Monitor nutritional status and GNRI in surgical patients.
Risks
- Consider advanced age, preexisting cognitive impairment, and malnutrition as risk factors for POD.
Patient & Prescribing Data
Adult surgical patients, particularly those over 74 years.
Address malnutrition to potentially reduce the risk of POD.
Clinical Best Practices
- Incorporate GNRI in preoperative assessments.
- Focus on nutritional optimization in at-risk populations.
- Utilize a multidisciplinary approach for managing surgical patients.
References
