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Difficulty: Very hardCardiovascular System

Match each of the following clinical presentations of cardiovascular disease with its most characteristic combination of jugular venous pulse (JVP) and arterial pulse contour findings.

  • A 45-year-old man with a history of mediastinal radiation for Hodgkin lymphoma 15 years ago, presenting with progressive ascites, peripheral edema, and exertional fatigue.Rapid y descent in JVP with an inspiratory elevation of venous pressure; arterial pulse has a normal contour with absent or minimal paradoxus.
  • A 55-year-old man with advanced non-small cell lung cancer presenting with acute-onset severe dyspnea, hypotension, and muffled heart sounds on auscultation.Prominent x descent with an absent y descent in JVP; arterial pulse demonstrates a drop of more than 10 mmHg in systolic pressure during inspiration.
  • A 32-year-old woman with a history of intravenous drug use presenting with fever, chills, and a new holosystolic murmur best heard at the lower left sternal border.Fusion of c and v waves causing a large systolic venous wave in JVP; obliterated x descent.
  • A 22-year-old male athlete presenting for evaluation of a harsh crescendo-decrescendo systolic murmur that becomes significantly louder upon standing from a seated position.Normal venous pressures; arterial pulse demonstrates a brisk upstroke followed by a mid-systolic dip and a second late-systolic peak.
  • A 60-year-old man with a history of untreated syphilis presenting with exertional dyspnea, a blowing decrescendo diastolic murmur, and head bobbing synchronized with his heartbeat.Normal venous pressures; arterial pulse demonstrates a bounding, rapid rise and rapid collapse with a markedly widened pulse pressure.

Answer

Constrictive pericarditis pairs with a rapid y descent and Kussmaul's sign; Cardiac tamponade pairs with an absent y descent and pulsus paradoxus; Tricuspid regurgitation pairs with a fused c-v wave; HOCM pairs with a pulsus bisferiens showing a mid-systolic dip; Aortic regurgitation pairs with a rapid rise and collapse bounding pulse.
Each clinical scenario uniquely maps to a distinct, high-yield hemodynamic profile. Identifying the physical exam findings allows for precise pathophysiologic correlation of right atrial pressure tracings and arterial pulse contour dynamics.

Step-by-Step Solution

1
Analyze the first clinical presentation to identify the underlying pathology.
The 45-year-old with radiation history has constrictive pericarditis.
Mediastinal radiation leads to late-onset pericardial scarring and fibrosis.
2
Identify the hemodynamic JVP findings characteristic of constrictive pericarditis.
Constriction features a prominent, rapid y descent and an inspiratory rise in JVP (Kussmaul's sign).
The stiff pericardium allows rapid early diastolic filling (rapid y) but abruptly halts it (pericardial knock), and restricts right-heart accommodation of venous return during inspiration.
3
Differentiate the lung cancer patient's presentation from the radiation patient.
The lung cancer patient has cardiac tamponade, defined by an absent y descent and pulsus paradoxus.
Unlike constriction, tamponade fluid exerts continuous pressure throughout diastole, preventing early rapid filling (loss of y descent) and causing profound ventricular interdependence (pulsus paradoxus).
4
Evaluate the arterial pulse contours for the remaining left-sided structural lesions.
HOCM causes a bisferiens pulse with a mid-systolic dip, whereas severe aortic regurgitation causes a bounding water-hammer pulse.
HOCM's dynamic obstruction momentarily interrupts ejection mid-systole. Aortic regurgitation simply has a massive stroke volume that rapidly empties into the periphery.

Key Concept

Differentiation of cardiovascular pathologies based on invasive and bedside hemodynamic wave tracings (JVP and arterial pulse contours).
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Cardiovascular System

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