Value of systolic time intervals in assessing severity of congenital aortic stenosis in children.

British Heart Journal
R J MoeneK K Bossina

Abstract

Simultaneous recordings have been made of electrocardiogram, phonocardiogram, carotid pulse tracing, left ventricular pressure, and aortic pressure in 27 children with aortic valve stenosis and 3 children with membranous subaortic stenosis. Peak systolic pressure difference ranged from 10 to 110 mmHg (1.3 to 14.6 kPa). None of the patients had congestive heart failure and cardiac output was in the normal range in all. Total electromechanical systole, left ventricular ejection time, and pre-ejection time were corrected for heart rate, age, and sex. Mild stenosis (peak systolic pressure difference less than or equal to 50 mmHg (6.7 kPa)) was present in 18, severe stenosis (peak systolic pressure difference greater than 50 mmHg) in 12 patients. The externally measured pre-ejection time and ejection time proved to be nearly equal to the corresponding intervals measured internally; from these data it is concluded that pre-ejection time and ejection time in children with aortic stenosis can be measured reliably by non-invasive methods. Mean values for corrected total electromechanical systole and ejection time were prolonged, but the corrected pre-ejection time did not differ from the normal value. When corrected time intervals were ...Continue Reading

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Citations

Nov 1, 2003·Behavior Research Methods, Instruments, & Computers : a Journal of the Psychonomic Society, Inc·Harriëtte RieseEco J C de Geus
Aug 30, 2014·Medical Engineering & Physics·Tânia PereiraJoão Cardoso
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Aug 1, 1977·Circulation·R P LewisH Boudoulas
Mar 1, 1982·Basic Research in Cardiology·H E UlmerG Weckesser

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