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- W4214652596 abstract "• The ratio of the preelection period to the left ventricular ejection time (PEP/LVET), obtained from the aortic root echocardiogram, was studied immediately before and after left ventricular (LV) cineangiography in 23 patients with documented coronary artery disease. The initial PEP/LVET ratio was inversely related to LV ejection fraction (<i>r</i>= —.78,<i>P</i>≤.001). Repeat measurements taken 60 s after angiography showed a significant decrease from a mean value of.36 ±.13 to.27 ±.08 (<i>P</i>≤.005). Furthermore, when patients were divided into those with an initial PEP/LVET value above and below 0.40, those with a higher value showed a significantly greater decrease following contrast left ventriculography (mean decrease, 0.16 vs 0.06,<i>P</i>≤.01). This study indicates that systolic time intervals derived from echocardiography are a reliable noninvasive measure of LV function, and that ventricular function improves following left ventriculography, with the degree of improvement being inversely related to initial function. (<i>Arch Intern Med</i>140:240-243, 1980)" @default.
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- W4214652596 date "1980-02-01" @default.
- W4214652596 modified "2023-09-28" @default.
- W4214652596 title "Echocardiographic Systolic Time Intervals" @default.
- W4214652596 doi "https://doi.org/10.1001/archinte.1980.00330140098025" @default.
- W4214652596 hasPublicationYear "1980" @default.
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