[Clinical observations during accumulative oral glycoside therapy with meproscillarin (author's transl)].

In heart failure of the severity degrees II and III according to Friedberg's classification, administration of a daily maintenance dose of 0.5--0.75 mg of 14-hydroxy-3beta-[(4-O-methyl-alpha-L-rhamnopyranosyl)oxy]-14beta-bufa-4,20,22-trienolide (mesproscillarin, Clift) induces a cumulative blood level of 1--1.5 mg after 8--10 days. This level eliminates manifestations of heart failure both clinically and with regard to objective criteria. Increased heart rate returns to normal particularly in types of the tachycardiac atrial fibrillation. The frequency corrected QT-time is significantly reduced by about 30 ms. The relative heart volume decreases. The heart's work is increased by about 15%. No side effects are observed under this oral accumulative glycoside therapy.