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Zorluk: OrtaPediatric Cardiovascular Disorders

A pediatrics clerkship director is reviewing classic presentations of congenital heart diseases with medical students. Match each congenital heart defect to its most characteristic clinical or radiographic finding.

  • Tetralogy of Fallot'Boot-shaped' heart on chest X-ray and a harsh systolic ejection murmur at the left upper sternal border
  • Transposition of the Great ArteriesNarrow mediastinum causing an 'egg-on-a-string' appearance on chest X-ray with a single loud S2
  • Ventricular Septal DefectHarsh holosystolic murmur at the left lower sternal border with a palpable thrill
  • Coarctation of the AortaBrachial-femoral pulse delay and a systolic murmur heard best over the left interscapular area
  • Patent Ductus ArteriosusContinuous machine-like murmur at the left infraclavicular area with bounding peripheral pulses

Cevap

Tetralogy of Fallot matches the boot-shaped heart. Transposition of the Great Arteries matches the egg-on-a-string X-ray. Ventricular Septal Defect matches the harsh holosystolic murmur. Coarctation of the Aorta matches the brachial-femoral pulse delay. Patent Ductus Arteriosus matches the continuous machine-like murmur.
Each congenital heart defect has distinct pathophysiologic consequences that lead to classic physical exam and radiographic findings. Recognizing these associations is crucial for rapid clinical identification and determining the next best step in management.

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1
Identify the characteristic radiographic and auscultatory findings for Tetralogy of Fallot.
Matches with 'boot-shaped' heart and harsh systolic ejection murmur.
The boot shape on X-ray is caused by right ventricular hypertrophy, and the murmur is caused by pulmonary stenosis.
2
Identify the hallmark presentation of Transposition of the Great Arteries.
Matches with narrow mediastinum ('egg-on-a-string') and a single S2.
The anterior location of the aorta narrows the mediastinal shadow and obscures the pulmonary component of the second heart sound.
3
Correlate the physical exam findings for a Ventricular Septal Defect.
Matches with a harsh holosystolic murmur at the left lower sternal border.
Blood flows continuously from the high-pressure left ventricle to the lower-pressure right ventricle throughout systole.
4
Recognize the vascular exam findings specific to Coarctation of the Aorta.
Matches with brachial-femoral pulse delay and interscapular murmur.
The narrowing of the descending aorta restricts distal blood flow, causing delayed or weak femoral pulses and a murmur audible over the back.
5
Identify the classic auscultatory signature of a Patent Ductus Arteriosus.
Matches with a continuous machine-like murmur and bounding pulses.
Continuous flow from the aorta to the pulmonary artery occurs in both systole and diastole, while rapid aortic runoff into the pulmonary circulation causes wide pulse pressure.

Anahtar Kavram

Clinical and radiographic hallmarks of congenital heart diseases
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Konular

Pediatric Cardiovascular Disorders

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