A Method for Characterizing Disease Progression from Acute Kidney Injury to Chronic Kidney Disease

• URL: http://arxiv.org/abs/2511.14603v1
• Date: Tue, 18 Nov 2025 15:53:31 GMT
• Title: A Method for Characterizing Disease Progression from Acute Kidney Injury to Chronic Kidney Disease
• Authors: Yilu Fang, Jordan G. Nestor, Casey N. Ta, Jerard Z. Kneifati-Hayek, Chunhua Weng,
• Abstract summary: Patients with acute kidney injury (AKI) are at high risk of developing chronic kidney disease (CKD)<n>We used electronic health record (EHR) data to track AKI patients' clinical evolution and characterize AKI-to-CKD progression.<n>We identified fifteen distinct post-AKI states, each with different probabilities of CKD development.
• Score: 8.67966267499195
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Patients with acute kidney injury (AKI) are at high risk of developing chronic kidney disease (CKD), but identifying those at greatest risk remains challenging. We used electronic health record (EHR) data to dynamically track AKI patients' clinical evolution and characterize AKI-to-CKD progression. Post-AKI clinical states were identified by clustering patient vectors derived from longitudinal medical codes and creatinine measurements. Transition probabilities between states and progression to CKD were estimated using multi-state modeling. After identifying common post-AKI trajectories, CKD risk factors in AKI subpopulations were identified through survival analysis. Of 20,699 patients with AKI at admission, 3,491 (17%) developed CKD. We identified fifteen distinct post-AKI states, each with different probabilities of CKD development. Most patients (75%, n=15,607) remained in a single state or made only one transition during the study period. Both established (e.g., AKI severity, diabetes, hypertension, heart failure, liver disease) and novel CKD risk factors, with their impact varying across these clinical states. This study demonstrates a data-driven approach for identifying high-risk AKI patients, supporting the development of decision-support tools for early CKD detection and intervention.

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