Open AccessBidirectional flow in congenital ventricular septal defect: A doppler echocardiographic study
Author(s) -
Zeevi B.,
Berant M.,
Blieden L. C.,
Keren G.,
Sherez J.,
Laniado S.
Publication year - 1987
Publication title -
clinical cardiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.263
H-Index - 72
eISSN - 1932-8737
pISSN - 0160-9289
DOI - 10.1002/clc.4960100303
Subject(s) - medicine , ventricle , diastole , cardiology , cardiac catheterization , systole , doppler echocardiography , hemodynamics , doppler effect , cardiac cycle , heart catheterization , shunt (medical) , ventricular pressure , blood pressure , physics , astronomy
The purpose of this study was to demonstrate the value of combined two‐dimensional and pulsed Doppler echocardiography (echo) in localizing and recording bidirectional flow in congenital ventricular septal defect. Eight children, aged 8 months to 16 years, with clinical signs of a ventricular septal defect, underwent two‐dimensional and pulsed Doppler echo study prior to cardiac catheterization. The ventricular septal defect was documented anatomically by two‐dimensional echo in all eight patients. Flow patterns in systole and diastole through the ventricular septal defect and on both sides of the defect were carefully studied. In all eight children, systolic, high velocity, pathologic, left to right flow was documented when the sampling volume was positioned on the right ventricular side of the defect. When the sampling volume was positioned inside the defect, to and fro flow, left to right in systole and right to left in diastole, was observed. In children with moderate to large defects, the diastolic flow had a peak in early diastole. Increased pressure in the right ventricle over the left ventricle during the same period was demonstrated by cardiac catheterization and coincided with the Doppler flow. The direction of flow across the defect was affected by the size of the defect and the magnitude of the net shunt. Two‐dimensional and pulsed echo Doppler were shown to be useful in demonstrating the ventricular septal defect and estimating its size and hemodynamic significance noninvasively.