Question

Difficulty: MediumPediatric Cardiovascular Disorders

Match the following classic pediatric clinical presentations and physical examination findings with their most likely underlying congenital heart disorder.

  • Continuous, 'machine-like' murmur best heard at the left infraclavicular area, associated with widened pulse pressure and bounding peripheral pulses.Patent ductus arteriosus
  • Harsh, holosystolic murmur best heard at the left lower sternal border, often accompanied by a palpable thrill, in an otherwise acyanotic infant.Ventricular septal defect
  • Harsh systolic ejection murmur at the left upper sternal border, a single S2, and episodic severe cyanosis relieved by knee-chest positioning.Tetralogy of Fallot
  • Decreased and delayed femoral pulses compared to brachial pulses, upper extremity hypertension, and a systolic murmur heard over the left interscapular area.Coarctation of the aorta
  • Profound cyanosis within hours of birth, a single S2, and an 'egg-on-a-string' appearance of the cardiac silhouette on chest radiography.Transposition of the great arteries

Answer

The correct matching aligns Patent ductus arteriosus with a continuous machine-like murmur, Ventricular septal defect with a holosystolic lower sternal border murmur, Tetralogy of Fallot with a systolic ejection murmur and cyanotic spells, Coarctation of the aorta with brachial-femoral pulse delay, and Transposition of the great arteries with neonatal cyanosis and an 'egg-on-a-string' chest X-ray.
Each clinical presentation contains pathognomonic physical examination and imaging findings that correspond to a specific congenital heart defect. Accurate diagnosis relies on identifying key features such as murmur timing (continuous versus holosystolic), location, cyanosis presence, and pulse character.

Step-by-Step Solution

1
Analyze the murmur timing and location for each clinical presentation.
Identified continuous murmur, holosystolic murmur, systolic ejection murmur, and interscapular murmur.
Murmur characteristics are highly specific to underlying structural defects.
2
Evaluate the presence of cyanosis and its onset timing.
Noted episodic cyanosis relieved by squatting (Tetralogy of Fallot) versus profound immediate neonatal cyanosis (Transposition of the great arteries).
Distinguishes between cyanotic heart diseases based on ductal dependency and pathophysiology of right-to-left shunting.
3
Assess peripheral pulse quality and blood pressure discrepancies.
Differentiated bounding pulses (Patent ductus arteriosus) from brachial-femoral pulse delay (Coarctation of the aorta).
Hemodynamic changes in the aorta manifest distinctly in peripheral pulses.

Key Concept

Clinical presentation and pathognomonic physical examination findings of common congenital heart defects.
Estimated Time:1m 30s
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