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Changes in patterns of left ventricular diastolic filling revealed by Doppler echocardiography in infants with ventricular septal defect

Published online by Cambridge University Press:  19 August 2008

Tadahiko Ito ,
Kenji Harada ,
Masamichi Tamura  and
Goro Takada
Tadahiko Ito*
Affiliation:
Department of Paediatrics, Akita University School of Medicine, 1-1-1 Hondo, Akita, Japan
Kenji Harada
Affiliation:
Department of Paediatrics, Akita University School of Medicine, 1-1-1 Hondo, Akita, Japan
Masamichi Tamura
Affiliation:
Department of Paediatrics, Akita University School of Medicine, 1-1-1 Hondo, Akita, Japan
Goro Takada
Affiliation:
Department of Paediatrics, Akita University School of Medicine, 1-1-1 Hondo, Akita, Japan
*
Tadahiko Ito, MD, Department of Paediatrics, Akita University School of Medicine, 1-1-1 Hondo, Akita 010, Japan. Tel: 81-188-34-1111: Fax: 81-188-36-2620
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Abstract

To evaluate left ventricular diastolic filling in infants with ventricular septal defect, which has yet to be documented, we measured various Doppler echocardiographic indexes from transmitral flow in the following groups: 10 infants with ventricular septal defect without pulmonary hypertension; 10 infants with ventricular septal defect with pulmonary hypertension; and 9 normal infants to serve as controls. The peak A, total velocity time integral, E area, and A area in patients without pulmonary hypertension were all significantly larger than those in controls. The peak ratio E/A, and 1/3 filling fraction, in patients without pulmonary hypertension were significantly lower than in controls. The peak A, A area, and deceleration time in patients with pulmonary hypertension were significantly larger than in patients without pulmonary hypertension and controls. The peak E/A, area E/A, and 1/3 filling fraction in patients with pulmonary hypertension were significantly lower than in those without pulmonary hypertension and controls. The index of left ventricular mass, as well as the index of end-diastolic left ventricular wall thickness, correlated strongly with peak A, A area, and deceleration time. The ratio between the systolic pulmonary and systemic pressures correlated strongly with peak A, A area, peak E/A, area EtA, and 1/3 filling fraction.

These results demonstrated that the patterns of left ventricular filling in infants with ventricular septal defect were different from those in normal infants, and suggested that the abnormal patterns may indicate the insufficiency of adaptation of left ventricle (increase of left ventricular compliance) for volume overload in the presence of a ventricular septal defect..

Keywords

Ventricular septal defectechocardiographyleft ventricular diastolic fillingpulmonary hypertensionleft ventricular hypertrophy
Type
Original Articles
Information
Cardiology in the Young , Volume 8 , Issue 1 , January 1998 , pp. 94 - 99
Copyright
Copyright © Cambridge University Press 1998

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