Apex cardiographic evaluation of the velocity of contractile element shortening at aortic valve opening (ACG-VCE-E)

Abstract

The average values of the velocity of contractile element shortening at opening of the aortic valve, assessed apex-cardiographically in 100 normal subjects and in 63 patients with previous myocardial infarction were 0.60 and 0.53; with correction for preload and values became 0.11 and 0.049 (psmaller than 0.0000006). It is concluded that the proposed concept of expressing myocardial mechanics in terms of displacement curves and indices approaches the problem clinically in a safe way.