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Recognition of coarctation of the aorta. A continuing challenge for the primary care physician
D G Thoele1, A J Muster, M H Paul
1Department of Pediatrics, Children's Memorial Hospital, Chicago, IL 60614.
Insights
Early diagnosis of coarctation of the aorta (CoA) is often missed. A thorough physical exam, including pulse palpation and blood pressure measurement, is crucial for identifying this critical heart defect in infants and children.
Area of Science:
- Pediatric Cardiology
- Diagnostic Medicine
- Congenital Heart Disease
Background:
- Coarctation of the aorta (CoA) is a congenital heart defect with classic physical findings.
- Diagnostic delays in CoA can lead to significant morbidity.
- Referring physicians frequently miss the diagnosis of CoA.
Purpose of the Study:
- To evaluate the diagnostic accuracy of referring physicians for coarctation of the aorta.
- To identify factors contributing to missed diagnoses of CoA.
- To emphasize the importance of specific physical examination techniques for early CoA detection.
Main Methods:
- A survey of 106 consecutive patients diagnosed with coarctation of the aorta.
- Analysis of diagnostic accuracy by referring physicians.
- Review of physical examination findings in diagnosed CoA patients.
Main Results:
- Less than one-third of patients with coarctation of the aorta received a correct initial diagnosis from their referring physician.
- Diagnostic failure in asymptomatic children was attributed to incomplete physical examinations.
- In infants with heart failure, CoA signs can be obscured, complicating recognition.
Conclusions:
- Specific physical examination techniques are essential for early recognition of coarctation of the aorta in all pediatric patients.
- Palpation of pulses and accurate blood pressure measurement are key examination components for identifying CoA.
- Improved diagnostic awareness and examination practices are needed to reduce delays in CoA diagnosis.
Abstract:
Coarctation of the aorta (CoA) in its classic form presents with characteristic and distinctive physical findings. However, in our survey less than one third of 106 consecutive patients in whom CoA was ultimately diagnosed had the correct diagnosis made by the referring physician. Our survey suggests that in asymptomatic infants and children, an incomplete physical examination explains the diagnostic failure. However, in infants presenting with heart failure, the diagnostic signs of CoA may be obscured and more difficult to recognize even when specifically sought. This survey reaffirms the need for specific physical examination techniques in all infants and children to facilitate early recognition of CoA; these include the palpation of pulses and proper measurement of blood pressure.