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Difficulty: MediumCardiothoracic and Vascular Surgery

A surgical clerkship student is reviewing the classic presentations of cardiovascular and thoracic disorders. For each clinical scenario described below, select the most accurate diagnosis.

  • A 62-year-old man presents with bilateral thigh and buttock pain while walking, inability to maintain an erection, and symmetrically diminished femoral pulses.Aortoiliac occlusive disease
  • A 55-year-old woman experiences episodic dizziness and left arm fatigue when working in her garden; examination reveals a 2525 mmHg difference in systolic blood pressure between her arms.Subclavian steal syndrome
  • A 28-year-old baseball pitcher complains of right hand numbness and pain; his radial pulse significantly weakens when he turns his head toward his raised right arm.Thoracic outlet syndrome
  • A 70-year-old man with long-standing hypertension presents with sudden, severe chest pain radiating to the back; physical exam reveals a new decrescendo diastolic murmur at the right sternal border.Acute ascending aortic dissection

Answer

The correct matches align each clinical vignette with its classic surgical pathology: the 62-year-old man has aortoiliac occlusive disease (Leriche syndrome), the 55-year-old woman has subclavian steal syndrome, the 28-year-old pitcher has thoracic outlet syndrome, and the 70-year-old man has an acute ascending aortic dissection.
Each patient presentation maps to a highly specific and pathognomonic constellation of symptoms for major vascular disorders. Aortoiliac occlusion blocks flow to the legs and pelvis; subclavian steal reverses vertebral flow to supply an active arm; thoracic outlet compression causes positional neurovascular compromise; and an ascending dissection can cause acute aortic valve incompetence.

Step-by-Step Solution

1
Analyze the first clinical scenario for the classic triad of peripheral artery disease symptoms.
Identified bilateral claudication, erectile dysfunction, and diminished femoral pulses, pointing to aortoiliac occlusive disease.
This specific symptom cluster isolates the vascular occlusion to the terminal aorta before it bifurcates into the internal iliacs (pudendal branches) and external iliacs.
2
Evaluate the second scenario for the combination of upper extremity claudication and neurologic symptoms.
Linked arm fatigue with dizziness and a blood pressure discrepancy to subclavian steal syndrome.
Dizziness upon arm exertion is the hallmark of retrograde vertebral artery flow compensating for a proximal subclavian stenosis.
3
Assess the third scenario for signs of neurovascular compression in the upper extremity.
Connected positional arm numbness and a positive Adson maneuver in an athlete to thoracic outlet syndrome.
Repetitive overhead movement can cause hypertrophy of the scalene muscles, compressing the brachial plexus and subclavian artery.
4
Identify the critical cardiovascular emergency described in the fourth scenario based on symptom onset and physical findings.
Matched tearing back pain and a new aortic regurgitation murmur to an acute ascending aortic dissection.
Ascending dissections can propagate retrograde to disrupt the aortic valve commissures, causing acute valvular incompetence.

Key Concept

Clinical recognition of classic vascular and thoracic surgical syndromes
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Topics

Cardiothoracic and Vascular Surgery

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