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Difficulty: MediumGeneral Internal Medicine

Match each patient presenting with severe hypertension and distinct clinical features to the most appropriate initial targeted pharmacologic intervention.

  • A 65-year-old man presenting with sudden-onset, severe, tearing chest pain radiating to the interscapular region, accompanied by asymmetric pulses in the upper extremities.Intravenous beta-adrenergic blockade (e.g., esmolol)
  • A 48-year-old woman with diffuse cutaneous systemic sclerosis who develops sudden oliguric acute kidney injury, microangiopathic hemolytic anemia, and a blood pressure of 230/120 mm Hg.Angiotensin-converting enzyme (ACE) inhibition (e.g., captopril)
  • A 35-year-old man with a known adrenal mass who presents with paroxysmal severe hypertension, pounding headaches, diaphoresis, and tachycardia.Intravenous alpha-adrenergic blockade (e.g., phentolamine)
  • A 72-year-old man with a history of heart failure with preserved ejection fraction presenting with acute severe dyspnea, hypoxia, and diffuse bilateral pulmonary crackles in the setting of a blood pressure of 210/115 mm Hg.Intravenous venodilation (e.g., nitroglycerin) alongside diuresis

Answer

Aortic dissection requires beta-blockade; Scleroderma renal crisis requires ACE inhibition; Pheochromocytoma requires alpha-blockade; Flash pulmonary edema requires venodilation and diuresis.
Each specific hypertensive emergency demands a precise pharmacological mechanism of action to counteract its pathophysiology. Using a generic approach for blood pressure lowering without addressing the specific underlying driver can lead to severe adverse outcomes.

Step-by-Step Solution

1
Analyze the clinical features of each patient to establish the underlying diagnosis causing the hypertensive emergency.
Identified diagnoses are acute aortic dissection, scleroderma renal crisis, pheochromocytoma crisis, and acute decompensated heart failure (flash pulmonary edema).
Accurate diagnosis is required because standard hypertensive emergency protocols vary drastically based on the target organ damage.
2
Identify the primary pathophysiological driver for each condition.
Drivers: shear stress (dissection), RAAS activation (scleroderma), catecholamine surge (pheochromocytoma), and high preload/afterload (flash pulmonary edema).
Understanding the mechanism allows for targeted pharmacotherapy rather than generic blood pressure reduction.
3
Match the diagnosis to the pharmacologic agent that specifically targets that pathophysiologic mechanism.
Matched esmolol to dissection, captopril to scleroderma, phentolamine to pheochromocytoma, and nitroglycerin/diuretics to heart failure.
This pairs the optimal intervention with the specific life-threatening condition while avoiding harmful contraindications.

Key Concept

Targeted pharmacotherapy for specific hypertensive emergencies based on underlying pathophysiology.
Estimated Time:1m 30s
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Topics

General Internal Medicine

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