POPULATION. The HEAAL trial randomized 3,834 patients with HFrEF to 150 mg or 50 mg
losartan daily in 29 countries from 2001 to 2005. The study design, described elsewhere
, was a randomized, double-blind, event driven trial. Key inclusion criteria included
the following: New York Heart Association(NYHA) functional class II to IV; left ventricular ejection fraction #40%; stable cardiovascular medical therapy for at least 2 weeks; and known intolerance to ACEIs. Key exclusion criteria included the following: systolic arterial blood pressure 220 mmol/l (2.49 mg/dl); serum potassium 5.7 mmol/l; hemoglobin