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Soru

Zorluk: ZorGeneral Internal Medicine

Match each clinical presentation of a hypertensive emergency to the most appropriate initial targeted pharmacologic intervention. Assume all patients require immediate medical management.

  • A 45-year-old woman with a history of diffuse skin thickening presents with a severe headache. Blood pressure is 215/115215/115 mm Hg. Laboratory studies show a serum creatinine of 2.82.8 mg/dL (baseline 0.80.8 mg/dL) and numerous schistocytes on a peripheral blood smear.Oral captopril
  • Emergency evaluation is requested for a 62-year-old man who developed sudden-onset, severe, tearing chest pain radiating to his interscapular region. Blood pressure is 210/120210/120 mm Hg in the right arm and 140/90140/90 mm Hg in the left arm. A decrescendo diastolic murmur is heard at the right upper sternal border.Intravenous esmolol
  • Episodic severe headaches, profuse sweating, and palpitations are the primary complaints of a 38-year-old man. Blood pressure is 230/125230/125 mm Hg, and heart rate is 115115/min. He has a strong family history of medullary thyroid cancer and primary hyperparathyroidism.Intravenous phentolamine
  • Respiratory distress and severe shortness of breath acutely develop in a 68-year-old man with a history of coronary artery disease. He is using accessory muscles of respiration. Blood pressure is 205/115205/115 mm Hg. Auscultation reveals diffuse bilateral crackles and a third heart sound (S3).Intravenous nitroglycerin

Cevap

Scleroderma renal crisis is treated with oral captopril; acute aortic dissection requires intravenous esmolol; pheochromocytoma crisis requires intravenous phentolamine; and flash pulmonary edema is managed with intravenous nitroglycerin.
Correct management of hypertensive emergencies requires tailoring the antihypertensive choice to the patient's specific end-organ damage and underlying pathophysiology. Scleroderma renal crisis relies on RAAS blockade (captopril). Aortic dissection requires decreasing cardiac shear stress (esmolol). Pheochromocytoma demands immediate alpha-blockade to counteract circulating catecholamines (phentolamine). Flash pulmonary edema benefits from rapid preload reduction (nitroglycerin).

Adım Adım Çözüm

1
Analyze the clinical vignettes to identify the specific type of hypertensive emergency.
Identified scleroderma renal crisis, acute aortic dissection, pheochromocytoma crisis, and flash pulmonary edema.
Each condition has a distinct pathophysiology driving the profound blood pressure elevation.
2
Select the pharmacologic agent that directly antagonizes the pathophysiologic mechanism of the identified emergency.
Matched captopril to RAAS hyperactivation, esmolol to high wall shear stress, phentolamine to catecholamine excess, and nitroglycerin to acute volume/pressure overload.
Generic blood pressure lowering is insufficient and can be harmful; therapy must be targeted to the underlying disease process.

Anahtar Kavram

Targeted pharmacotherapy for specific hypertensive emergencies based on underlying pathophysiology.
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Konular

General Internal Medicine

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