[The energy "budget" of the heart (a review of the literature)].
An attempt is made on the grounds of literary information to represent the contemporary picture of the energy distribution in the man heart left ventricle in the different "budget items". About 20% of energy of the normally working left ventricle are spent without connection with contractions (on the "basal metabolism" of the myocardium). About 10% of energy are spent on the work of Na+/K(+)- and Ca(2+)-ATPases in the processes of excitation and electromechanical coupling. About 70% of energy are spent on the mechanical activity of the left ventricle. Further details of these basic components of the energy expenditure are examined. The Different kinds of the left ventricle efficiency are determined.
Aliukhin
Iu S
IuS
I. P. Pavlov Institute of Physiology, Russian Academy of Sciences, St. Petersburg.
D001696:Biomechanical Phenomena; D004734:Energy Metabolism / Q000502:physiology*; D006801:Humans; D008433:Mathematics; D009206:Myocardium / Q000378:metabolism*; D016276:Ventricular Function