Acute kidney injury development and impact on clinical and economic outcomes in patients with cirrhosis: an observational cohort study over a 10-year period

Objectives 

Acute kidney injury (AKI) is a severe complication that is associated with significant morbidity and mortality in hospitalized cirrhotic patients. Data about AKI incidence and outcomes in patients with cirrhosis is scarce in the Middle East region. This study explored the incidence and impact of AKI on clinical and economic outcomes in cirrhosis.

Methods 

This was a retrospective cohort study of cirrhosis patients admitted to an educational hospital in Jordan during the years 2012–2022. Demographics, clinical and biochemical information, and charges were retrieved from medical electronic records. Logistic regression models were conducted to evaluate predictors of AKI and mortality in cirrhosis adjusting for covariates. Hospital charges were also described.

Results 

A total of 380 cirrhosis patients were included with an AKI incidence of 27.9%. Male sex, elevated baseline serum creatinine, presence of spontaneous bacterial peritonitis, and higher comorbidity score were independently associated with AKI development (P < 0.05). The hospital mortality rate was markedly higher for patients with AKI versus those without AKI (51.9% vs. 6.2%, respectively; P < 0.001). AKI was associated independently with higher odds of hospital death (OR = 5.83, P < 0.001), prolongation of the median hospital stays by 5 days (P < 0.001), more clinical complications, and increased total hospital charges per admission by $2500.

Conclusion 

AKI is prevalent in cirrhosis patients, and it is associated with increased mortality, hospitalization, and cost. This burden in cirrhosis emphasizes the need for early identification of patients at high risk of AKI and applying prompt and effective management approaches, aiming at improving outcomes.

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