Force-frequency relationship of human atrial muscle in vitro: beta-adrenergic mechanisms.
D000818:Animals; D016275:Atrial Function; D006348:Cardiac Surgical Procedures; D003864:Depression, Chemical; D004558:Electric Stimulation; D004594:Electrophysiology; D006801:Humans; D007545:Isoproterenol / Q000494:pharmacology*; D009119:Muscle Contraction / Q000187:drug effects; D009213:Myography; D011433:Propranolol / Q000494:pharmacology*; D011817:Rabbits; D013565:Sympatholytics / Q000494:pharmacology*
D013565:Sympatholytics; D011433:Propranolol; D007545:Isoproterenol