Pressure-induced skin and soft tissue injury Quiz: Ace Your Exams

Get ready to dominate your medical and nursing exams by using our dynamic quizzes to elevate your knowledge and increase your confidence. Whether you're gearing up for the USMLE®, COMLEX®, or your next in-class assessment, Osmosis quizzes tackle key topics in pathology, diagnostics, and treatment approaches. By honing in on clinical readiness and decision-making, we make sure the knowledge you gain empowers you both in the classroom and in real-world practice. Jump in and supercharge your exam prep!

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An 82-year-old woman was brought to the emergency department from a nursing home for evaluation of altered mental status and fever for the past three days. Medical history includes well-controlled type II diabetes mellitus, hypertension, and a right middle cerebral artery stroke that occurred five years ago. The patient has limited mobility and is largely bedbound. Temperature is 38.7°C (102°F), blood pressure is 179/98 mmHg, and pulse is 83/min. Physical examination reveals a 10 x 10 x 3 cm wound in the gluteal region as shown in the image below. Which of the following best describes the underlying cause of this patient’s physical examination findings?
A close-up of an open wound with necrotic tissue. Edges are red, swollen, and uneven. Dark, hardened tissue is in the center, and fluid drains from sections of the wound.

A close-up of an open wound with necrotic tissue. Edges are red, swollen, and uneven. Dark, hardened tissue is in the center, and fluid drains from sections of the wound.

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Chronic hyperglycemia

Infection with flea-borne gram-negative bacteria

Neoplastic proliferation of malignant cells

Infection with spore-forming gram-positive bacteria

Prolonged pressure over the affected region