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Biomedical subjects

S S Carvalhal

Publications and source records attributed to S S Carvalhal.

16 recordsLinked to original sources
PubMed1979

Sequence of shortening of the normal human left ventricle.

Left ventricular sequence of shortening was studied through the analysis of cineventriculograms in 30 degree right anterior oblique projection of 11 normal patients. In all patients transverse shortening progressed in base to apex direction, in a concentric fashion. Base descent started simultaneously with the first transverse inward motion and continued throughout systole. There was a slight protrusion of the apex in the beginning of systole, lasting a mean of 115 ms.

Adolescent↗
PubMed1975

[Heart biopsy].

Explore the source record for details and available documents.

Adolescent↗
PubMedDate not supplied

Analysis of the position of the left ventricular apex and base during systole.

The relative positions of the left ventricular apex and base in end-diastole (ED) and end-systole (ES) were determined in a group of normal individuals using cross-sectional echocardiography (group A) and in a group of patients with normal hemodynamics and angiographic parameters using cine-computed tomography (group B). In both groups no change was detected in the position of the epicardial aspect of the apex from ED to ES. The base moved in direction of the apex by 10.2% +/- 1.9% (mean +/- standard deviation) of the longitudinal dimension of the chamber in group A and by 12.9% +/- 5.1% in group B. In both groups the apical cavity was obliterated by the peri-apical walls. Apical obliteration is responsible for the apparent movement of the apical segment seen in cineventriculography.

Adult↗