Which statement best explains compartment syndrome?

Which statement best explains compartment syndrome?

• A. Bleeding and swelling cause increased pressure in an area that cannot expand.
• B. It occurs when nerves become inflamed due to immobility.
• C. It results from inadequate blood supply to the surrounding tissue.
• D. It is caused by muscle spasm and tight cast only.

Answer: (D)

Compartment syndrome is caused by a rise in pressure within a closed muscle compartment. When bleeding or swelling occurs inside that fixed space, the surrounding fascia doesn’t stretch enough to accommodate it, so pressure builds up. That elevated pressure restricts blood flow to the tissues inside the compartment, leading to ischemia and potential nerve and muscle damage if not relieved promptly. The statement that best explains this is the one describing bleeding and swelling causing increased pressure in an area that cannot expand. It captures the key mechanism: pressure within a nonstretchable space drives the problem, not simply nerves becoming inflamed from immobility, nor only a general lack of blood supply. While a tight cast or muscle spasm can contribute to compression, the fundamental issue in compartment syndrome is the pressure rise within a closed compartment.

Compartment syndrome is caused by a rise in pressure within a closed muscle compartment. When bleeding or swelling occurs inside that fixed space, the surrounding fascia doesn’t stretch enough to accommodate it, so pressure builds up. That elevated pressure restricts blood flow to the tissues inside the compartment, leading to ischemia and potential nerve and muscle damage if not relieved promptly.

The statement that best explains this is the one describing bleeding and swelling causing increased pressure in an area that cannot expand. It captures the key mechanism: pressure within a nonstretchable space drives the problem, not simply nerves becoming inflamed from immobility, nor only a general lack of blood supply. While a tight cast or muscle spasm can contribute to compression, the fundamental issue in compartment syndrome is the pressure rise within a closed compartment.