PMID: 7337060Nov 1, 1981Paper

Left ventricular performance in atrial fibrillation in the elderly

Age and Ageing
F I Caird, B O Williams

Abstract

Ejection fraction was measured directly by a radionuclide method, and indirectly from systolic time intervals, in elderly patients in atrial fibrillation. Both methods show that the ejection fraction averages approximately 55% at mean ventricular rates of 50-70 beats/min and falls to 20% or below as mean rate increases to over 120 beats/min. Atrial fibrillation is thus associated with a decrease in left ventricular performance, which is accentuated by increasing ventricular rates.

Citations

Oct 1, 1988·International Journal of Bio-medical Computing·J M Rawles

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