[The effect of different concentrations of strophanthin K on the chrono- and inotropic parameters of the isolated myocardial preparation and its oxygen consumption].

The contraction rate and force of the myocardium and its oxygen consumption under the action of various strophanthin-K concentrations for 10 min after its administration into the cuvette were studied in the experiments on the isolated frog atria contracting in the isometric mode. There was a two-phase response of cardiac glycoside, which depended on the time of its action and concentration.