The pressure-volume and stiffness-pressure relations in the isolated rabbit left ventricle.
A balloon was introduced into the isolated rabbit left ventricle with intraventricular volume being controlled by a feedback amplifier. Pressure-volume and stiffness-pressure relations were determined as intraventricular volume was changed. These ventricular relations were explained according to the theory of wall muscle mechanics.
D000818:Animals; D001696:Biomechanical Phenomena; D002306:Cardiac Volume; D004285:Dogs; D005260:Female; D006321:Heart / Q000502:physiology*; D066298:In Vitro Techniques; D008954:Models, Biological; D009200:Myocardial Contraction; D010477:Perfusion; D011312:Pressure; D011817:Rabbits; D013314:Stress, Mechanical; D016276:Ventricular Function