Echocardiographic predictors of success of catheter closure of atrial septal defect with the buttoned device

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Abstract

Transcatheter occlusion of ostium secundum atrial septal defects (ASD) with the buttoned device has been shown to be feasible, effective, and safe. The final decision to implant the device is largely based on the balloon sizing of the ASD during cardiac catheterization. Only subjective criteria of ASD size and the septal rims on echocardiography have been used before catheterization, balloon sizing, and transcatheter occlusion. The purpose of this study was to determine whether objective echo criteria could be developed to predict successful occlusion of the ASD. During a 46-month period ending August 1992, 29 children with secundum ASD were evaluated for transcatheter occlusion. The device was successfully implanted in 15 (group A); in the remaining 14 children, this procedure could not be performed (group B). Preocclusion ethos were analyzed by independent investigators who had no knowledge of outcome of the procedure. Echo parameters studied included size of ASD, length of atrial septum (LAS), and size of the superior and inferior rims in precordial and subcostal views and maximum jet width by color flow mapping. From these measurements several ratios were derived, and the data were compared. A smaller (p < 0.05) ASD was present in the group of patients with successful implantation of the device; LAS was similar (p > 0.1) in both groups. A lower (p < 0.05) ratio of ASD to LAS and a higher (p < 0.05) ratio of the superior and inferior septal rims to ASD were associated with the group of patients with successful implantation of the device. An analysis by classification into either group by multivariate logistic regression analysis and by contingency tables identified ASD size ≤15 mm, ASDLAS ratio ≤0.35, and ratio of superior rim to ASD >0.75 as factors predictive of successful ASD occlusion. The larger the number of predictive factors, the greater the chance for successful ASD closure. Predictive echocardiographic factors are likely to be helpful in the selection of patients for transcatheter occlusion. The utility of these data needs confirmation by prospective studies in larger groups of children.

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  • Intracardiac Echocardiography-Guided Transcatheter Closure of Secundum Atrial Septal Defect: A New Efficient Device Selection Method

    2003, Journal of the American College of Cardiology
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    Transcatheter closure of ASDs has recently gained wide acceptance and has become an increasingly attractive alternative to surgical repair in selected cases. The unique features of the ASO have extended the limits of transcatheter closure (21–23)with promising short-term and midterm results (3,4). However, an extremely precise assessment of ASDs is crucial for optimal ASO selection and procedural success.

  • Surgical validation and implications for transcatheter closure of quantitative echocardiographic evaluation of atrial septal defect

    2000, American Journal of Cardiology
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    Eight patients had balloon-stretched ASD diameter estimated by techniques previously described.19 According to recommendations in published reports2,20 up to the beginning of the study, the inclusion criteria for device closure were: defect diameter <20 mm measured either by TTE or balloon sizing together with a width of ≥4 mm in the surrounding septal margins. Of these 39 children, 12 satisfied the criteria for transcatheter closure.

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Supported in part by National Institutes of Health grant RR03186; a grant-in-aid from the Graduate School, University of Wisconsin; and a grant from the Oscar Rennebohm Foundation, Inc., Madison.

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