title: [Study on the new index U2/AP in canine aortic root for left ventricular performance].
mesh_terms: D000818:Animals; D001011:Aorta / Q000502:physiology*; D001783:Blood Flow Velocity; D001794:Blood Pressure; D004285:Dogs; D009200:Myocardial Contraction; D016276:Ventricular Function