Cardiac screening of children with Down's syndrome

Area of Science:

• Pediatric Cardiology
• Clinical Genetics
• Diagnostic Imaging

Background:

• Children with Down syndrome have a high prevalence of congenital heart defects.
• Accurate and accessible screening methods are crucial for early detection and management.
• Evaluating the effectiveness of different diagnostic approaches is essential.

Purpose of the Study:

• To determine the role of clinical and laboratory investigations in assessing the cardiovascular system of children with Down syndrome.
• To compare the diagnostic accuracy of clinical assessment, electrocardiograms (ECGs), and echocardiograms.
• To establish an appropriate screening protocol for pediatric Down syndrome patients.

Main Methods:

• Prospective evaluation of 50 children with Down syndrome (excluding infants <6 weeks or those with known heart disease).
• Independent clinical examinations by a geneticist and a pediatric cardiologist.
• Performance of electrocardiograms (ECGs) and echocardiograms (two-dimensional and Doppler).

Main Results:

• Geneticist assessment alone had a sensitivity of 67% and specificity of 88%.
• Combining clinical evaluation with ECG interpretation improved sensitivity to 80% and specificity to 90%.
• This combined approach successfully identified all significant cardiac lesions, comparable to a cardiologist's assessment.

Conclusions:

• Clinical assessment combined with ECG interpretation serves as an adequate and appropriate screening method for children with Down syndrome.
• This strategy is particularly valuable in settings lacking readily available pediatric echocardiography expertise.
• Early and accurate cardiovascular screening can be achieved through a combination of clinical judgment and basic diagnostic tests.