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KMID : 0368019870100020429
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Journal of Soonchunhyang University
1987 Volume.10 No. 2 p.429 ~ p.434
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A study on the relationship between the magnitude of right-to-left ahunt and abnormal intervenricular septal motion in patients with atrial septal defect
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Abstract
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Echocardiography has been recognized as a useful noninvasive examination that aids in the diagnosis of atrial septal defect (ASD). The characteristic M?mode echocardiographic patterns of ASD, increased right ventricular dimension and abnormal or paradoxical interventricular septal motion, are important fin-dings that suggest the presence of ASD if there are coexisting symptoms.
To define the mechanism of abnormal diastolic motion of interventricular septum in patients with ASD and the relationship between the ventricular septal motion and the magnitude of the right?to?left shunt in patients with ASD, we analyzed the results of cardiac catheterization and M?mode echocardiographic records from 13 patients with ASD during the period from March 1984 to August 1985.
The results were as follow;
1. Right ventricular dimension correlated with Qp:Qs weakly(r=0.49, P<0.1)
2. Neither the tricuspid valve excursion nor the tricuspid valve to mitral valve excursion ratio correlated with Qp:Qs
3. In comparison diastolic posterior septal motion (DPSM) with Qp:Qs, there was statistically significant linear correlation (r=0.72, P <0.01)
4. All 5 patients with DPSM>5mm had Qp:Qs >2.5:1, whereas only 5 of 8 patients with DPSM<5mm had shunts of this large.
According to the above results it was thought that DPSM
reflects the relative filling of the right and left ventricles and marked DPSM in early diastole in patients with ASD is specific but not sensitive for the the detection of large left?to-rigt shunts.
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