Observational study finds 49% AKI incidence in fulminant myocarditis patients, identifies risk factors

This observational cohort study analyzed 408 fulminant myocarditis (FM) patients treated at Central China Fuwai Hospital to identify risk factors for acute kidney injury (AKI) and its progression to chronic kidney disease (CKD). The study compared patients who developed AKI with those who did not. The primary finding was that 201 patients (49.2%) exhibited FM-associated AKI. Risk factors identified through statistical analysis (P < 0.05) included male gender, elevated baseline NT-pro BNP and procalcitonin levels, and reduced left ventricular ejection fraction. Surviving AKI patients were followed for at least 3 months to observe CKD progression, though specific progression rates were not reported. Safety and tolerability data were not reported. The study's key limitations include its observational, single-center design, which can only identify associations rather than establish causation. Specific effect sizes, confidence intervals, and absolute risk increases for the identified factors were not provided, limiting clinical quantification of risk. The authors suggest the findings could inform a risk prediction model to improve renal prognosis in FM patients, but such a model would require external validation. Clinicians should interpret these associations cautiously when assessing individual patient risk.