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Difficulty: MediumPhysical Examination Findings

Match the following eponymous cardiovascular physical examination findings with their most characteristic underlying pathophysiologic mechanism.

  • Kussmaul signImpaired right ventricular diastolic filling leading to a paradoxical increase in jugular venous pressure during inspiration.
  • Pulsus paradoxusExaggerated ventricular interdependence causing an inspiratory decrease in systolic blood pressure of greater than 10 mm Hg.
  • Quincke pulseTransmission of a widened pulse pressure to the periphery, manifesting as alternating blanching and erythema in the nail beds.
  • Pulsus parvus et tardusProlonged left ventricular ejection time and diminished stroke volume leading to a delayed, weak carotid upstroke.

Answer

Kussmaul sign matches with impaired right ventricular diastolic filling. Pulsus paradoxus matches with exaggerated ventricular interdependence. Quincke pulse matches with transmission of a widened pulse pressure. Pulsus parvus et tardus matches with prolonged left ventricular ejection time.
Each eponymous cardiovascular physical sign is uniquely matched to its underlying pathophysiologic mechanism. Recognizing these associations is essential for establishing the correct clinical diagnosis at the bedside based on direct physical examination.

Step-by-Step Solution

1
Analyze Kussmaul sign.
Identify it as a paradoxical rise in JVP during inspiration.
This occurs in conditions like constrictive pericarditis where the right heart cannot accommodate the increased inspiratory venous return.
2
Analyze Pulsus paradoxus.
Identify it as an inspiratory systolic blood pressure drop greater than 10 mm Hg.
This is a key finding in cardiac tamponade due to enhanced ventricular interdependence within a fixed pericardial space.
3
Analyze Quincke pulse.
Identify it as capillary pulsations in the nail beds.
This is a peripheral manifestation of the widened pulse pressure seen in severe aortic regurgitation.
4
Analyze Pulsus parvus et tardus.
Identify it as a weak and delayed pulse.
This reflects the fixed outflow tract obstruction characteristic of severe aortic stenosis.

Key Concept

Cardiovascular physical examination signs and their pathophysiologic basis
Estimated Time:1m 30s
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Topics

Physical Examination Findings

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