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Copyright: ©Author(s) 2026. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial (CC BY-NC 4.0) license. No commercial re-use. See permissions. Published by Baishideng Publishing Group Inc.
World J Clin Cases. Apr 26, 2026; 14(12): 119786
Published online Apr 26, 2026. doi: 10.12998/wjcc.v14.i12.119786
Letter to the Editor: Machine learning models for hospital-acquired functional decline in geriatric surgical patients - from prediction to prevention
Anjana S Wajekar, Gauri R Gangakhedkar, Ashwini D Rane
Anjana S Wajekar, Gauri R Gangakhedkar, Ashwini D Rane, Department of Anesthesia, Critical Care and Pain, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Homi Bhabha National Institute, Navi Mumbai 410210, Maharashtra, India
Author contributions: Wajekar AS made outline of manuscript; Wajekar AS, Gangakhedkar GR, and Rane AD contributed to writing of manuscript, have read and approved the final manuscript.
Conflict-of-interest statement: All authors declare that they have no conflict of interest to disclose.
Corresponding author: Anjana S Wajekar, Professor, Department of Anesthesia, Critical Care and Pain, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Homi Bhabha National Institute, Sector 22, Utsav Chowk-CISF Road, Owe Camp, Kharghar, Navi Mumbai 410210, Maharashtra, India. anjanawajekar@gmail.com
Received: February 6, 2026
Revised: February 13, 2026
Accepted: March 16, 2026
Published online: April 26, 2026
Processing time: 68 Days and 12.3 Hours
Abstract

Hospital-acquired functional decline (HAFD), even after a successful surgery, is found in up to one-third of the geriatric population. Early and accurate prediction of HAFD can provide timepoints for early intervention to improve postoperative outcomes. While machine learning (ML) offers a promising approach, several pitfalls must be addressed before clinical adoption. When combined with clinically interpretable outputs and continuous model recalibration, ML can support patient-centred decision-making, helping reduce preventable disability, shorten recovery time, and improve overall quality of care for vulnerable hospitalized elders.

Keywords: Frailty; Geriatric; Hospital-acquired functional decline; Machine learning; Prediction; Prevention

Core Tip: Machine learning (ML) for hospital-acquired functional decline will be truly successful not when it merely predicts decline, but when it enables timely interventions that prevent it. When combined with clinically interpretable outputs and continuous model recalibration, ML can support patient-centred decision-making, helping reduce preventable disability, shorten recovery time, and improve overall quality of care for vulnerable hospitalized elders.