Research Article

Clinical Markers Predicting Mortality in Patients Receiving Renal Replacement Therapy in the Intensive Care Unit: A One-Year Retrospective Study

Volume: 11 Number: 3 September 30, 2025
TR EN

Clinical Markers Predicting Mortality in Patients Receiving Renal Replacement Therapy in the Intensive Care Unit: A One-Year Retrospective Study

Abstract

Objective: Acute kidney injury (AKI) necessitating continuous renal replacement therapy (CRRT) is linked to elevated mortality rates in the intensive care unit (ICU). Finding prognostic markers affects each person's care are still very important. The objective of this study was to determine clinical and biochemical predictors of intensive care unit mortality in patients undergoing CRRT. Methods: This retrospective single-center study encompassed 130 adult ICU patients who underwent CRRT from January 2024 to January 2025. For the mortality analysis, patients were divided into two groups: surviving and exitus. For the secondary analysis, they were divided into two groups: early CRRT and late CRRT, based on when they started. Results: The mortality rate in the ICU was 83.8% (n=109). In multivariable logistic regression, a higher SOFA score (OR: 2.18; 95% GA: 1.38–3.45; p=0.001), increased serum creatinine (OR: 0.59; 95% GA: 0.36–0.94; p=0.029), levels were independently linked to mortality. There was no significant difference in mortality between the early (57.7%) and late (42.3%) CRRT initiation groups (p>0.05). The late group, on the other hand, stayed in the ICU and the hospital for a lot longer and got more Prismocal solution (p<0.05). Conclusion: This study identified several clinical and biochemical parameters as independent predictors of mortality in CRRT-treated ICU patients. Although early CRRT initiation did not significantly impact survival, it was associated with reduced use of dialysis solution and shorter ICU and hospital stays. These findings suggest that integrating prognostic markers into clinical decision-making may improve outcome prediction.

Keywords

Supporting Institution

No funding

Ethical Statement

The study was approved by the Kocaeli University Non-Interventional Clinical Research Ethical Committee (Decision No. GOKAEK-2025/11/30). The study was performed retrospectively and all patient data were anonymized.

Thanks

The authors are grateful to Assoc. Prof. Dr. Sibel Balcı from the Department of Biostatistics for her valuable assistance.

References

  1. White KC, Serpa-Neto A, Hurford R, et al. Sepsis-associated acute kidney injury in the intensive care unit: incidence, patient characteristics, timing, trajectory, treatment, and associated outcomes: a multicenter, observational study. Intensive Care Med. 2023;49(9):1079-1089. doi:10.1007/s00134-023-07138-0
  2. Wald R, McArthur E, Adhikari NKJ, et al. Changing incidence and outcomes following dialysis-requiring acute kidney injury among critically ill adults: a population-based cohort study. Am J Kidney Dis. 2015;65(6):870-877. doi:10.1053/j.ajkd.2014.10.017
  3. Liu J, Xie H, Ye Z, Li F, Wang L. Rates, predictors, and mortality of sepsis-associated acute kidney injury: a systematic review and meta-analysis. BMC Nephrol. 2020;21(1):318. doi:10.1186/s12882-020-01974-8
  4. Prowle JR. Sepsis-associated AKI. Clin J Am Soc Nephrol. 2018;13(2):339-342. doi:10.2215/CJN.07310717
  5. Liu L, Hu Z. When to start renal replacement therapy in acute kidney injury: what are we waiting for? J Intensive Med. 2024;4(3):341-346. doi:10.1016/j.jointm.2023.12.005
  6. Evans L, Rhodes A, Alhazzani W, et al. Surviving sepsis campaign: international guidelines for management of sepsis and septic shock 2021. Crit Care Med. 2021;49(11):e1063. doi:10.1097/CCM.0000000000005337
  7. Jeong R, Bagshaw SM, Ghamarian E, et al. Time to renal replacement therapy initiation in critically ill patients with acute kidney injury: a secondary analysis of the standard versus accelerated initiation of renal replacement therapy in acute kidney injury (STARRT-AKI) trial. Crit Care Med. 2025;53(4):e897-e907. doi:10.1097/CCM.0000000000006616
  8. Järvisalo MJ, Kartiosuo N, Hellman T, Uusalo P. Predicting mortality in critically ill patients requiring renal replacement therapy for acute kidney injury: a retrospective single-center study of two cohorts. Sci Rep. 2022;12(1):10177. doi:10.1038/s41598-022-14497-z

Details

Primary Language

English

Subjects

Intensive Care

Journal Section

Research Article

Publication Date

September 30, 2025

Submission Date

August 18, 2025

Acceptance Date

September 11, 2025

Published in Issue

Year 2025 Volume: 11 Number: 3

APA
Alparslan, V., Kutlu, S., Güler, Ö., Ergül, M., İzgin Avcı, İ., Baykara, N., & Kuş, A. (2025). Clinical Markers Predicting Mortality in Patients Receiving Renal Replacement Therapy in the Intensive Care Unit: A One-Year Retrospective Study. Kocaeli Üniversitesi Sağlık Bilimleri Dergisi, 11(3), 171-176. https://doi.org/10.30934/kusbed.1768253
AMA
1.Alparslan V, Kutlu S, Güler Ö, et al. Clinical Markers Predicting Mortality in Patients Receiving Renal Replacement Therapy in the Intensive Care Unit: A One-Year Retrospective Study. KOU Sag Bil Derg. 2025;11(3):171-176. doi:10.30934/kusbed.1768253
Chicago
Alparslan, Volkan, Samet Kutlu, Özlem Güler, et al. 2025. “Clinical Markers Predicting Mortality in Patients Receiving Renal Replacement Therapy in the Intensive Care Unit: A One-Year Retrospective Study”. Kocaeli Üniversitesi Sağlık Bilimleri Dergisi 11 (3): 171-76. https://doi.org/10.30934/kusbed.1768253.
EndNote
Alparslan V, Kutlu S, Güler Ö, Ergül M, İzgin Avcı İ, Baykara N, Kuş A (September 1, 2025) Clinical Markers Predicting Mortality in Patients Receiving Renal Replacement Therapy in the Intensive Care Unit: A One-Year Retrospective Study. Kocaeli Üniversitesi Sağlık Bilimleri Dergisi 11 3 171–176.
IEEE
[1]V. Alparslan et al., “Clinical Markers Predicting Mortality in Patients Receiving Renal Replacement Therapy in the Intensive Care Unit: A One-Year Retrospective Study”, KOU Sag Bil Derg, vol. 11, no. 3, pp. 171–176, Sept. 2025, doi: 10.30934/kusbed.1768253.
ISNAD
Alparslan, Volkan - Kutlu, Samet - Güler, Özlem - Ergül, Metin - İzgin Avcı, İpek - Baykara, Nur - Kuş, Alparslan. “Clinical Markers Predicting Mortality in Patients Receiving Renal Replacement Therapy in the Intensive Care Unit: A One-Year Retrospective Study”. Kocaeli Üniversitesi Sağlık Bilimleri Dergisi 11/3 (September 1, 2025): 171-176. https://doi.org/10.30934/kusbed.1768253.
JAMA
1.Alparslan V, Kutlu S, Güler Ö, Ergül M, İzgin Avcı İ, Baykara N, Kuş A. Clinical Markers Predicting Mortality in Patients Receiving Renal Replacement Therapy in the Intensive Care Unit: A One-Year Retrospective Study. KOU Sag Bil Derg. 2025;11:171–176.
MLA
Alparslan, Volkan, et al. “Clinical Markers Predicting Mortality in Patients Receiving Renal Replacement Therapy in the Intensive Care Unit: A One-Year Retrospective Study”. Kocaeli Üniversitesi Sağlık Bilimleri Dergisi, vol. 11, no. 3, Sept. 2025, pp. 171-6, doi:10.30934/kusbed.1768253.
Vancouver
1.Volkan Alparslan, Samet Kutlu, Özlem Güler, Metin Ergül, İpek İzgin Avcı, Nur Baykara, Alparslan Kuş. Clinical Markers Predicting Mortality in Patients Receiving Renal Replacement Therapy in the Intensive Care Unit: A One-Year Retrospective Study. KOU Sag Bil Derg. 2025 Sep. 1;11(3):171-6. doi:10.30934/kusbed.1768253