A simple technique for obtaining high-quality echocardiograms of the left ventricle during upright bicycle exercise is described. The use of this method has resulted in left ventricular dimension data that are consistent with the results of studies in conscious, previously instrumented dogs during running. Careful subject selection is important, however, as only 1 of 5 normal subjects was found suitable for these studies. Therefore, we believe that upright exercise echocardiography is feasible in selected subjects and provides useful physiologic information about left ventricular performance during exercise.

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Annals of internal medicine

The transplanted kidney as a source of hepatitis B infection.

1979

Authors: Wolf JL, Perkins HA, Schreeder MT, Vincenti F

Experimental eye research

Synthesis of plasminogen activator by bovine corneal endothelial cells.

1979

Authors: Fehrenbacher L, Gospodarowicz D, Shuman MA

Circulation

Left ventricular volume from paired biplane two-dimensional echocardiography.

1979

Authors: Schiller NB, Acquatella H, Ports TA, Drew D, Goerke J, Ringertz H, Silverman NH, Brundage B, Botvinick EH, Boswell R, Carlsson E, Parmley WW