A 73-Year-Old Man Comes to the Emergency Department with Unstable

question 34

Multiple Choice

A 73-year-old man comes to the emergency department with unstable angina.  He undergoes coronary angiography via the femoral approach.  A stent is placed in the right coronary artery, and the patient is discharged.  He returns to the emergency department 2 days later with blue discoloration of his right toe.  He has pain and mild tingling in the affected toe.  Medical history is significant for hyperlipidemia and coronary artery disease.  On physical examination, the right toe appears cyanotic, and there is livedo reticularis affecting the right thigh.  Peripheral pulses in the lower extremities are bilaterally palpable.  Serum creatinine is 2.8 mg/dL (preoperatively it was 1.0 mg/dL) .  Which of the following histopathologic findings would most likely be seen on biopsy of this patient's kidney?

• A)Cholesterol clefts in arterial lumen
• B)Glomerular crescent formation
• C)Hyperplastic arteriolar changes
• D)Extensive necrosis of proximal tubular cells
• E)Tubular obstruction with urate crystals

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Definitions:

Formula

A mathematical relationship or rule expressed in symbols, or a set sequence of steps, used for solving a particular problem.

Breast-feeding

The practice of feeding a baby with milk directly from the mother's breast, providing essential nutrients and antibodies.

Allergies

Immune system responses to foreign substances (allergens) that are typically harmless to most people, causing symptoms such as sneezing, itching, and swelling.

Bottle-feeding

Feeding a baby from a bottle filled with milk (either expressed breast milk or formula), as an alternative to breastfeeding, allowing others to feed the baby and facilitating measuring how much the baby consumes.