Maeda N
Jpn Circ J. 1975 Jun;39(6):693-4, 699-705.
An indirect and direct estimate of the left ventricular performances were compared in 45 patients with hypertension, arteriosclerotic heart disease and miscellaneous diseases. In results, externally measured LVET, ET/PEP, PEP and a wave ratio correlated well with internally measured myocardial function. Therefore it was concluded that this convenient and atraumatic method was useful as a valid and sensitive measure of myocardial performance.