[Acceleration generated by the myocardium as a criterion of its contractility].
In experiments on cat heart-lung preparations cooled from 38 to 25 degrees C, acceleration of the heart muscle (in mm Hg . s-2) was the only criterion of myocardial contractility, which showed identical changes under an equivalent increase (1.5-fold) of heart load with volume or resistance. The latter indicates that acceleration of the myocardium is the most adequate criterion of myocardial contractility.
D000818:Animals; D002415:Cats; D004562:Electrocardiography; D006439:Hemodynamics; D066298:In Vitro Techniques; D008433:Mathematics; D009200:Myocardial Contraction; D010701:Phonocardiography; D013696:Temperature
Uskorenie, razvivaemoe miokardom, kak kriteriĭ ego sokratimosti.