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Difficulty: MediumCardiothoracic and Vascular Surgery

Match each patient's clinical presentation to the underlying surgical pathology or pathophysiologic mechanism that best explains their symptoms.

  • While attending a family gathering, a 62-year-old man with untreated hypertension suddenly experiences agonizing, tearing pain between his shoulder blades. Upon arrival at the emergency department, his right radial pulse is markedly weaker than his left.Creation of a false lumen within the aortic media
  • A 68-year-old patient reports progressive difficulty walking due to cramping pain in his hips and buttocks. He also mentions new-onset erectile dysfunction. Examination shows bilateral absence of femoral pulses.Atherosclerotic occlusion at the aortic bifurcation
  • Shortly after missing several doses of her anticoagulant medication for atrial fibrillation, a 75-year-old woman develops excruciating generalized abdominal pain. Despite her distress, her abdomen remains soft and non-tender to palpation.Arterial embolization from a left atrial appendage thrombus
  • A 35-year-old heavy tobacco user seeks evaluation for agonizing pain at rest and a black, necrotic ulcer on his right great toe. His brachial, femoral, and popliteal pulses are all 2+ and symmetric.Nonatherosclerotic, highly inflammatory, segmental occlusive disease

Answer

The presentations map to: Aortic dissection (media false lumen), Leriche syndrome (aortic bifurcation occlusion), Acute mesenteric ischemia (arterial embolization), and Buerger disease (inflammatory segmental occlusion).
Each clinical scenario contains distinct pathognomonic features that definitively link to a vascular pathology. Tearing back pain with pulse asymmetry defines an aortic intimal tear. Buttock claudication with impotence and absent femoral pulses forms the Leriche triad of distal aortic occlusion. Pain out of proportion to exam in a patient with atrial fibrillation is classic for superior mesenteric artery embolization. Ischemic digits with preserved proximal pulses in a young smoker firmly points to thromboangiitis obliterans.

Step-by-Step Solution

1
Analyze the first clinical vignette regarding tearing back pain and pulse asymmetry.
Identify the pathology as acute aortic dissection, linking it to the creation of a false lumen in the aortic media.
These physical findings signify a disruption in aortic blood flow typically driven by an intimal tear.
2
Evaluate the second vignette detailing buttock claudication, impotence, and absent femoral pulses.
Recognize this as Leriche syndrome, caused by atherosclerotic occlusion at the aortic bifurcation.
This specific combination of symptoms relies on bilateral hypoperfusion of the internal iliac and femoral arteries.
3
Assess the third vignette involving atrial fibrillation and abdominal pain out of proportion to exam.
Identify acute mesenteric ischemia, mapped to an arterial embolization from the left atrial appendage.
An uncoagulated fibrillating atrium throws clots that frequently lodge in the superior mesenteric artery, causing severe ischemia without initial peritoneal irritation.
4
Examine the final vignette concerning a young smoker with distal necrosis but normal proximal pulses.
Diagnose thromboangiitis obliterans (Buerger disease), representing a nonatherosclerotic inflammatory segmental occlusion.
The preservation of larger proximal vessels alongside severe distal ischemia in a smoker specifically rules out systemic atherosclerosis and points to this distinct inflammatory vasculitis.

Key Concept

Identifying characteristic clinical presentations of acute and chronic vascular conditions to accurately determine their underlying pathophysiology.
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Topics

Cardiothoracic and Vascular Surgery

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