Heart failure. A decision analytic analysis of New Zealand data using the published results of the SOLVD Treatment Trial. Studies of Left Ventricular Dysfunction.

This study sought to evaluate the changes in direct medical costs and life-years gained or lost by adding enalapril to conventional treatment (digoxin and diuretics) for heart failure (HF). The published results of the Studies of Left Ventricular Dysfunction (SOLVD) Treatment Trial, and a decision analytical model developed by the University of Pennsylvania, were used in combination with New Zealand data to undertake the evaluation. All costs were measured in 1993 New Zealand dollars ($NZ) [$NZ1 = $US0.5509, September 1993]. Potential net cost savings per patient treated over a 4-year period were $NZ652 together with an additional 2 months of life gained. If these individual potential cost savings are extended to the New Zealand population who have HF (but are at present not receiving an ACE inhibitor) then $NZ6 517 000 in discounted health sector costs could be avoided. The model was sensitive to changes in the price of enalapril, to estimates of the population with HF, the percentage of the population with HF treated with enalapril, and to hospital unit costs for nonfatal cases of HF. The study demonstrated that the addition of enalapril to the conventional treatment of HF was cost effective when compared with conventional medical therapy alone.