Research Article

Clinical and Prognostic Factors in Patients with Acute Kidney Injury

Volume: 5 Number: 4 November 13, 2025

Clinical and Prognostic Factors in Patients with Acute Kidney Injury

Abstract

Objectives: This study aimed to evaluate demographic characteristics, underlying etiologies, dialysis requirements, and biochemical prognostic factors associated with mortality in patients with acute kidney injury (AKI). Methods: A total of 72 hospitalized patients with AKI and 50 healthy controls were retrospectively analyzed. Demographic, clinical, and laboratory parameters were compared using Student’s t-test, Chi-square, and Pearson correlation analyses. Statistical significance was set at p<0.05. Results: The etiological distribution was 38.9%, 51.4%, and 9.7% for prerenal, renal, and postrenal causes, respectively. Hemodialysis was required in 15.2%, and overall in-hospital mortality was 20.8%. According to correlation analysis, mortality was significantly associated with higher serum phosphorus (r = 0.35, p < 0.01; 95% CI 0.12–0.56), cortisol (r=0.41, p<0.01), and ferritin (r = 0.54, p < 0.01; 95% CI 0.29–0.72) levels, and lower albumin concentration (r=−0.31, p<0.05). Dialysis requirement correlated with renal etiology (r=0.31, p<0.01), elevated creatinine (r=0.56, p<0.01), and phosphorus (r=0.28, p<0.05). Conclusion: Renal causes were the predominant etiology in AKI. Biochemical markers such as phosphorus, cortisol, ferritin, and albumin may serve as valuable indicators for early risk stratification and mortality prediction.

Keywords

Acute kidney injury, Albumin, Cortisol, Ferritin, Hemodialysis, Mortality, Phosphorus, Prognosis, Renal replacement therapy

Ethical Statement

The research protocol was reviewed and approved by the Institutional Faculty of Medicine Hospital Clinical Research Ethics Committee (Decision Number: 05.09.2013, 2).

References

  1. 1. Lameire N, Van Biesen W, Vanholder R. Acute renal failure. Lancet. 2005;365(9457):417-30. doi:10.1016/S0140-6736(05)17831-3.
  2. 2. Bellomo R, Ronco C, Kellum JA, Mehta RL, Palevsky P, Acute Dialysis Quality Initiative Workgroup. Acute renal failure – definition, outcome measures, animal models, fluid therapy and information technology needs: the Second International Consensus Conference of the Acute Dialysis Quality Initiative (ADQI) Group. Crit Care. 2004;8(4):R204-12. doi:10.1186/cc2872.
  3. 3. Kellum JA, Bellomo R, Ronco C. Classification of acute kidney injury using RIFLE: What’s the purpose? Crit Care Med. 2007;35(8):1983-4. doi:10.1097/01.CCM.0000277518.67114.F8.
  4. 4. Akcan-Arikan A, Zappitelli M, Loftis LL, Washburn KK, Jefferson LS, Goldstein SL. Modified RIFLE criteria in critically ill children with acute kidney injury. Kidney Int. 2007;71(10):1028-35. doi:10.1038/sj.ki.5002231.
  5. 5. Schneider J, Khemani R, Grushkin C, Bart R. Serum creatinine as stratified in the RIFLE score for acute kidney injury is associated with mortality and length of stay for children in the pediatric intensive care unit. Crit Care Med. 2010;38(3):933-9. doi:10.1097/CCM.0b013e3181cd12e1.
  6. 6. Ostermann M, Chang RW. Acute kidney injury in the intensive care unit according to RIFLE. Crit Care Med. 2007;35(8):1837-43; quiz 52. doi:10.1097/01.CCM.0000277041.13090.0A.
  7. 7. Mehta RL, Kellum JA, Shah SV, Molitoris BA, Ronco C, Warnock DG, et al. Acute Kidney Injury Network: report of an initiative to improve outcomes in acute kidney injury. Crit Care. 2007;11(2):R31. doi:10.1186/cc5713.
  8. 8. Mehta RL, Pascual MT, Soroko S, Savage BR, Himmelfarb J, Ikizler TA, et al. Spectrum of acute renal failure in the intensive care unit: the PICARD experience. Kidney Int. 2004;66(4):1613-21. doi:10.1111/j.1523-1755.2004.00927.x.
  9. 9. Himmelfarb J, Joannidis M, Molitoris B, Schietz M, Okusa MD, Warnock D, et al. Evaluation and initial management of acute kidney injury. Clin J Am Soc Nephrol. 2008;3(4):962-7. doi:10.2215/CJN.04971107.
  10. 10. Kidney Disease: Improving Global Outcomes (KDIGO) CKD Work Group. KDIGO 2024 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease. Kidney Int. 2024;105(4S):S117-314. doi:10.1016/j.kint.2023.10.018.
APA
Seven, İ., & Emre, H. (2025). Clinical and Prognostic Factors in Patients with Acute Kidney Injury. DAHUDER Medical Journal, 5(4), 121-128. https://doi.org/10.56016/dahudermj.1793529
AMA
1.Seven İ, Emre H. Clinical and Prognostic Factors in Patients with Acute Kidney Injury. DAHUDER MJ. 2025;5(4):121-128. doi:10.56016/dahudermj.1793529
Chicago
Seven, İsmet, and Habib Emre. 2025. “Clinical and Prognostic Factors in Patients With Acute Kidney Injury”. DAHUDER Medical Journal 5 (4): 121-28. https://doi.org/10.56016/dahudermj.1793529.
EndNote
Seven İ, Emre H (November 1, 2025) Clinical and Prognostic Factors in Patients with Acute Kidney Injury. DAHUDER Medical Journal 5 4 121–128.
IEEE
[1]İ. Seven and H. Emre, “Clinical and Prognostic Factors in Patients with Acute Kidney Injury”, DAHUDER MJ, vol. 5, no. 4, pp. 121–128, Nov. 2025, doi: 10.56016/dahudermj.1793529.
ISNAD
Seven, İsmet - Emre, Habib. “Clinical and Prognostic Factors in Patients With Acute Kidney Injury”. DAHUDER Medical Journal 5/4 (November 1, 2025): 121-128. https://doi.org/10.56016/dahudermj.1793529.
JAMA
1.Seven İ, Emre H. Clinical and Prognostic Factors in Patients with Acute Kidney Injury. DAHUDER MJ. 2025;5:121–128.
MLA
Seven, İsmet, and Habib Emre. “Clinical and Prognostic Factors in Patients With Acute Kidney Injury”. DAHUDER Medical Journal, vol. 5, no. 4, Nov. 2025, pp. 121-8, doi:10.56016/dahudermj.1793529.
Vancouver
1.İsmet Seven, Habib Emre. Clinical and Prognostic Factors in Patients with Acute Kidney Injury. DAHUDER MJ. 2025 Nov. 1;5(4):121-8. doi:10.56016/dahudermj.1793529