Myocardial Oxygen Consumption, Left Ventricular Fibre Shortening and Wall Tension
- 1 July 1967
- journal article
- Published by Oxford University Press (OUP) in Cardiovascular Research
- Vol. 1 (3), 219-228
- https://doi.org/10.1093/cvr/1.3.219
Abstract
Myocardial oxygen consumption (MVO2) was studied in a canine right heart bypass preparation. At constant heart rate and left ventricular peak developed tension (calculated from ventricular volume and pressure), doubling cardiac inflow increased MVO2 by 1·3 ml./100 g LV/min. This approximate 10% increase is attributed to increased contractile element shortening and work.Keywords
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