title: Measurement of ejection fraction in the elderly.
abstract: A simple, virtually non-invasive, radionuclide method of measurement of ejection fraction has been evaluated in a study of 60 elderly patients. The causes of difficulty are described. The mean difference between duplicate measurements is 4.9%. The range of values obtained corresponds well to that found by others, as does the relationship to systolic time intervals. The method should be of value particularly for the assessment of the effects of drugs on the myocardium.
mesh_terms: D000368:Aged; D001145:Arrhythmias, Cardiac / Q000175:diagnosis; D001281:Atrial Fibrillation / Q000175:diagnosis; D002302:Cardiac Output; D003327:Coronary Disease / Q000175:diagnosis; D006801:Humans; D011877:Radionuclide Imaging / Q000379:methods*; D013318:Stroke Volume