Coarctation repair without cardiac catheterization in infants

Area of Science:

• Pediatric Cardiology
• Diagnostic Imaging
• Congenital Heart Disease

Background:

• Coarctation of the aorta is a critical congenital heart defect requiring timely diagnosis and intervention.
• Cardiac catheterization has traditionally been used for diagnosis but carries inherent risks, especially in neonates.
• Non-invasive imaging modalities are crucial for accurate assessment and management planning.

Purpose of the Study:

• To evaluate the diagnostic accuracy of two-dimensional echocardiography with Doppler in infants with coarctation of the aorta.
• To determine if echocardiography can replace cardiac catheterization for pre-operative diagnosis and management.
• To assess the detection of associated cardiac anomalies and their clinical significance.

Main Methods:

• Retrospective analysis of 35 infants undergoing surgery for coarctation of the aorta.
• Detailed review of diagnostic methods used in 15 uncatheterized patients, including clinical exam, chest radiography, ECG, and 2D/Doppler echocardiography.
• Comparison of echocardiographic findings with surgical outcomes.

Main Results:

• Two-dimensional echocardiography accurately diagnosed coarctation of the aorta in all cases.
• Associated anomalies like patent ductus arteriosus, bicuspid aortic valve, VSD, and AV canal were identified.
• Echocardiography correctly assessed VSD significance, preventing reoperation for shunt.
• Mitral and aortic stenosis were missed in two critically ill patients but did not alter management.

Conclusions:

• Two-dimensional echocardiography is a reliable tool for diagnosing coarctation of the aorta and associated defects in infants.
• This non-invasive method allows for accurate pre-operative management, potentially avoiding cardiac catheterization risks.
• While severe low-flow states may obscure some lesions, echocardiography's diagnostic capability is high for coarctation management.