to determine whether these effects persist during long-term therapy , nine patients with severe congestive heart failure were evaluated by upright maximal exercise testing before therapy ( baseline ) , after 10 +/- 1 weeks of oral therapy , and during double-blind , placebo-controlled readministration of intravenous milrinone after withdrawal of oral drug for 24 hours .
C0018802
congestive heart failure
C0128513
milrinone