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Echocardiographically guided repair of tetralogy of Fallot
G Santoro1, B Marino, D Di Carlo
1Ospedale Bambino Gesù , Rome, Italy.
Insights
Echocardiography can safely guide primary repair for uncomplicated tetralogy of Fallot, reducing the need for cardiac catheterization. This diagnostic method demonstrated high accuracy in selecting patients for echo-guided surgery.
Area of Science:
- Pediatric Cardiology
- Diagnostic Imaging
Background:
- Cardiac catheterization is traditionally mandatory for tetralogy of Fallot (TOF) surgical planning.
- 2D Doppler color flow echocardiography is a safe diagnostic tool for congenital heart defects.
Purpose of the Study:
- To evaluate the efficacy of echocardiography-guided primary repair for selected uncomplicated TOF cases.
- To assess the diagnostic accuracy of echocardiography in identifying associated malformations in TOF patients.
Main Methods:
- Retrospective analysis of 139 TOF patients undergoing surgery.
- Comparison of outcomes between patients with echo-guided repair (Group I) and those requiring cardiac catheterization (Group II).
- Assessment of echocardiography sensitivity and specificity for detecting associated anomalies.
Main Results:
- 105 patients underwent primary repair; 56 were exclusively echo-guided.
- No diagnostic errors were found in the echo-guided group.
- Echocardiography showed 100% sensitivity and 85% specificity for associated malformations, with a 38.4% false-positive rate in Group II.
Conclusions:
- Echocardiography is adequate for selecting uncomplicated TOF patients for primary repair.
- Echo-guided surgery can be a safe and effective alternative to cardiac catheterization in selected cases.
- This approach can potentially streamline surgical planning for pediatric congenital heart disease.
Abstract:
Although 2-dimensional, Doppler, color flow echocardiography is accepted as a safe diagnostic method to guide the surgical treatment of certain heart defects, cardiac catheterization remains mandatory for patients with tetralogy of Fallot. Based on the excellent diagnostic correlation between echocardiography and angiocardiography, a policy of echo-guided primary repair of uncomplicated, selected cases of tetralogy of Fallot was introduced at Ospedale Bambino Gesù. In the last 5 years, of 139 patients who had surgery for tetralogy of Fallot, 105 underwent primary repair. In 56 patients (53.3%), surgery was guided only by echocardiography (group I). In the remaining 49 patients (46.7%) (group II), unclear imaging of cardiovascular anatomy (n = 23), or echo-suspected associated malformations (n = 26) prompted cardiac catheterization. The 2 groups did not differ in age and weight at surgery. Intraoperative examination did not show diagnostic errors in patients of group I; cardiac catheterization and surgery confirmed the suspected associated anomalies in 16 of 26 patients of group II (38.4% false-positive). Echocardiography showed an overall sensitivity of 100% and specificity of 85% for detection of associated malformations. In conclusion, echocardiography proved to be adequate for selection of patients with uncomplicated forms of tetralogy of Fallot for primary repair.