A positive inotropic effect of phenylephrine mediated through alpha adrenergic receptors.
D000818:Animals; D016275:Atrial Function; D004983:Ethanolamines / Q000494:pharmacology; D006168:Guinea Pigs; D006321:Heart / Q000294:innervation* / Q000502:physiology*; D006325:Heart Atria / Q000187:drug effects; D066298:In Vitro Techniques; D009638:Norepinephrine / Q000494:pharmacology*; D010643:Phenoxybenzamine / Q000494:pharmacology; D010646:Phentolamine / Q000494:pharmacology; D010656:Phenylephrine / Q000494:pharmacology*; D011984:Sensory Receptor Cells / Q000187:drug effects / Q000502:physiology*; D013564:Sympathetic Nervous System / Q000502:physiology*
D004983:Ethanolamines; D010643:Phenoxybenzamine; D010656:Phenylephrine; D009638:Norepinephrine; D010646:Phentolamine