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European Heart Journal 1996 17(3):453-456;
Copyright © 1996 by the European Society of Cardiology.
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© 1996 The European Society of Cardiology

Effects of respiration on left ventricular diastolic function in healthy children

F. K. Alehan, S. Özkutlu and D. Alehan

Cardiology Unit, Department of Pediatrics, Hacettepe University Faculty of Medicine Ankara, Turkey

Received 2 February 1995; revised 4 July 1985; accepted 7 August 1995.

Correspondence:Dr Suheyla Ö zkutlu, Department of Pediatric Cardiology, Hacettepe University, Faculty of Medicine, 06100, Ankara, Turkey

Abstract

Pulsed Doppler echocardiographic indices of mitral valve filling were measured in 20 healthy children, between 3 and 125 years old, in order to evaluate the effects of spontaneous respiration on left ventricular diastolic filling patterns. There were significant respiratory variations in four parameters of left ventricular diastolic function: The peak early filling velocity, the ratio of early to late peak filling velocity, and the ratio of early to late diastolic velocity-time integral decreased significantly during inspiration (mean decrease 7%, P<0·05; 16%, P<0·01; and 12%, P<0·05, respectively). On the other hand there was a significant increase in late peak filling velocity with inspiration (10% increase, P<0·05). Other variables of left ventricular diastolic filling were unchanged with inspiration. These results suggest that assessment of left ventricular diastolic function in children should be standardized with regard to respiratory phases in any clinical application.

(Eur Heart J 1996; 17: 453%456)

Key Words: Pulsed Doppler echocardiography • diastolic function • left ventricle • respiration • children


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