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Heart failure causes increased venous pressure, leading to liver dysfunction. The fibrosis-4 index is a simple index for liver fibrosis and has been reported to be useful for predicting prognosis in heart failure; however, its impact on patients with pulmonary hypertension due to left heart disease (PH-LHD) has not yet been fully elucidated.We enrolled consecutive 230 hospitalized patients who had been diagnosed as having PH-LHD. The fibrosis-4 index was calculated as follows: [aspartate transaminase (U/L) × age]/[alanine transaminase 1/2 (U/L) × platelet count (10 9 /L) ]. We followed patients for all-cause mortality during the follow-up period (mean 1112 ± 822 days).The patients were divided into tertiles based on their fibrosis-4 index: the first tertile 0.335 to 1.381; the second tertile 1.391 to 2.311; and the third tertile 2.323 to 14.339. Compared with the first tertile, the third tertile had lower estimated glomerular filtration rates and hemoglobin levels. All-cause mortality was significantly higher in the third than in the first tertile. In a Cox proportional hazard model, the fibrosis-4 index was a predictor of all-cause mortality in PH-LHD patients (HR 1.212, 95% CI 1.099-1.337, P &lt; 0.001).The fibrosis-4 index is associated with kidney function, anemia, and high mortality in PH-LHD patients.

The Fibrosis-4 Index Is Useful for Predicting Mortality in Patients with Pulmonary Hypertension due to Left Heart Disease