Effect of magnesium sulfate, isradipine, and ritodrine on contractions of myometrium: pregnant human and rat

Background.  Magnesium sulfate, isradipine, and ritodrine are smooth muscle relaxants used for treating preterm labor. The aim of this study is to investigate the action profile of these drugs on the amplitude and frequency of spontaneous contractions of isolated myometrial strips of pregnant human and rat.

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