The geriatric nutritional risk index as a strong predictor of adverse outcomes following total shoulder arthroplasty

Abstract

Background: This study investigates the association between the Geriatric Nutritional Risk Index (GNRI), a simple readily available measure of malnutrition risk, and 30-day postoperative complications following total shoulder arthroplasty (TSA). Methods: The American College of Surgeons National Surgical Quality Improvement Program database was queried for all patients who underwent TSA between 2015 and 2021. The study population was divided into 3 groups based on preoperative GNRI: normal/reference (GNRI > 98), moderate malnutrition (92 ≤ GNRI ≤ 98), and severe malnutrition (GNRI 2 days (OR: 1.85, 95% CI: 1.63-2.12; P 2 days (OR: 3.27, 95% CI: 2.73-3.92; P < .001), and mortality (OR: 4.61, 95% CI: 1.51-14.04; P = .007). Conclusion: Malnutrition based on GNRI is a strong predictor of complications following TSA, with increasing severity related to an increased rate of complications.

Keywords

• Total shoulder arthroplasty
• Malnutrition
• Geriatric
• Risk index
• Complications
• Postoperative