Routine Laboratory Results and Thirty Day and One-Year Mortality Risk Following Hospitalization with Acute Decompensated Heart Failure

8,246 patients with a first admission for acute decompensated heart failure (principal diagnosis ICD-9 code 428, no concurrent myocardial infarction), mean age 75.6, 47.8% female, across 7 tertiary hospitals in Israel.

A simple mortality prediction score based on three dichotomized abnormal routine laboratory results upon admission: hypoalbuminemia (<3.5 g/dL), hyponatremia (<136 meq/L), and elevated blood urea (≥43 mg/dL), assigning 1 point for each pathological result.

Patients with normal laboratory values (score of 0).

30-day and 1-year all-cause deathshard clinical