title: Cardiac assist by intrathoracic and abdominal pressure variations: a mathematical study.
mesh_terms: D000005:Abdomen / Q000502:physiology*; D000818:Animals; D001243:Assisted Circulation / Q000379:methods*; D004285:Dogs; D006439:Hemodynamics; D008433:Mathematics; D008955:Models, Cardiovascular; D011312:Pressure; D013909:Thorax / Q000502:physiology*