Echocardiographic Systolic Time Intervals: Left Ventricular Performance in Coronary Artery Disease

Robert J. Chilton, Rene A. Oliveros, Baldwin S. Stutts, Charles H. Beckmann, Charles A. Boucher

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


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 (r = —.78, P ≤.001). Repeat measurements taken 60 s after angiography showed a significant decrease from a mean value of.36 ±.13 to.27 ±.08 (P ≤.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, P ≤.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.

Original languageEnglish (US)
Pages (from-to)240-243
Number of pages4
JournalArchives of Internal Medicine
Issue number2
StatePublished - Feb 1980

ASJC Scopus subject areas

  • Internal Medicine


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