Modified method for determining myocardial refractory period.
D000818:Animals; D002415:Cats; D004558:Electric Stimulation; D007099:Imipramine / Q000494:pharmacology*; D066298:In Vitro Techniques; D009119:Muscle Contraction / Q000187:drug effects*; D010210:Papillary Muscles / Q000502:physiology*; D011802:Quinidine / Q000494:pharmacology*; D013565:Sympatholytics / Q000494:pharmacology*; D014309:Tripelennamine / Q000494:pharmacology*
D013565:Sympatholytics; D014309:Tripelennamine; D011802:Quinidine; D007099:Imipramine