title: Effect of different perfusion pressures on the excitation spreading pattern of isolated guinea pig hearts from transitional and adult type circulations.
mesh_terms: D000828:Animal Population Groups; D000818:Animals; D000831:Animals, Newborn; D005071:Evoked Potentials; D006168:Guinea Pigs; D006321:Heart / Q000502:physiology*; D066298:In Vitro Techniques; D010477:Perfusion; D011312:Pressure; D014672:Vectorcardiography