[Effect of ryodipine, fenigidin, verapamil, and manganese ions on the contractile strength and the myometrium potential duration during rhythmic stimulation and at rest]. / Vliianie riodipina, fenigidina, verapamila i ionov margantsa na silu sokrashcheniia i dlitel'nost' potentsialov miometriia pri ritmicheskoi stimuliatsii i v pokoe.

Action of the calcium channels blocking agents was studied using their strong but reversible concentrations, in different regimens. Riodypine and phenihydine suppressed the contraction strength and shortened the AP duration in the myometrium muscle stripes equally effectively both in resting and under stimulation (0.3 Hz). Verapamyl and manganese ions suppressed the contraction strength and shortened the AP duration more effectively under rhythmic stimulation than in resting.

[Effect of diumancal, foridon, nifedipine, and verapamil on the myometrium potentials in pregnant rats]. / Vliianie diumankala, foridona, nifedipina i verapamila na biopotentsialy miometriia beremennykh krys.

All the preparations under study were i.v. administered to pregnant Wistar rats in the doses adequate to therapeutic those on pregnant woman basis. Within 10 minutes, a drop both in the amplitude and in the rate of the myometrium potentials were found.