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J Intern Med. 1989 Oct;226(4):251-6.

Effects of acute myocardial infarction on the displacement of the atrioventricular plane: an echocardiographic study.

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1
Department of Medicine I, Karolinska Institute at Södersjukhuset (South Hospital), Stockholm, Sweden.

Abstract

The effects of acute myocardial infarction (MI) on the displacement of the left ventricular (LV) atrioventricular (AV) plane is presented. The material consisted of 40 patients with first-time Q-wave MI (26 pts with ant. MI and 14 with post. MI). Nineteen age-matched healthy subjects were used as controls. The displacement of the AV plane was determined at four sites corresponding to anterior (AV-A), septal (AV-S), posterior (AV-P) and lateral (AV-L) parts of the LV wall. In anterior and posterior MI all the sites showed significantly reduced AV-plane displacement compared to healthy subjects (P less than 0.001). Moreover, within the anterior MI group the AV-A and AV-S displacements were significantly reduced compared to the points AV-L and AV-P (P less than 0.001) and the AV-L displacement was reduced compared to AV-P (P less than 0.001). In posterior MI the displacement at AV-P was reduced compared to other points (P less than 0.001) and, to a certain extent, AV-S was reduced compared to the points AV-A and AV-L (P less than 0.001). The reduced magnitude of the AV plane displacement seems to be an expression of regionally reduced systolic function. The method described may provide a simple means of defining regional wall motion abnormalities of the LV following MI.

[Indexed for MEDLINE]

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