Effects of variations in the strength of left ventricular contraction on aortic valve closure in the dog.


The efficiency of aortic valve closure was studied in five experiments on three normal dogs by simultaneous roentgen videodensitometry, upstream sampling of dye dilution and recording of flow velocity and direction in the ascending aorta using a chronically implanted electromagnetic flowmeter. The aortic valve closed effectively during regular ventricular… (More)


7 Figures and Tables