Association between blood urea nitrogen-to-creatinine ratio trajectories and mortality in patients with severe pneumonia requiring invasive mechanical ventilation: a Medical Information Mart for Intensive Care IV (MIMIC-IV) database analysis.

J Thorac Dis · 2026 · PMC13266777 · PMID 42306717

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a decreasing trendno p-value reported

Group 3 displayed the highest BUNCR level, characterized by the most rapid increase during the first 4 days, with a decreasing trend emerging only on the fourth day.

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