Bleeding from a fracture or penetrating wound to a limb can cause increased pressure within a muscle compartment, leading to which condition?

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Multiple Choice

Bleeding from a fracture or penetrating wound to a limb can cause increased pressure within a muscle compartment, leading to which condition?

When a fracture or penetrating wound bleeds into a limb and swelling occurs inside a closed muscle compartment, the pressure there can rise because the fascia surrounding the muscles doesn’t expand. That rising pressure squeezes blood vessels and reduces blood flow to the muscles and nerves, causing ischemia. This creates acute compartment syndrome, a true emergency. The telltale signs are intense pain that is out of proportion to what you’d expect from the exam, and pain that worsens with passive stretching of the affected muscle. Swelling or a tight, firm feeling in the involved area may be present, and numbness or tingling can occur as nerves are affected. If not treated promptly, the lack of blood flow can lead to muscle necrosis and nerve damage, so relief of pressure through fasciotomy is critical. Other conditions don’t fit this scenario. Osteomyelitis is an infection of bone, not an immediate pressure issue inside a compartment. Chronic venous insufficiency involves long-standing vein valve problems and edema, not acute pressure from a limb injury. Tetanus is a toxin-mediated muscle stiffness condition, not a pressure-related limb emergency.

When a fracture or penetrating wound bleeds into a limb and swelling occurs inside a closed muscle compartment, the pressure there can rise because the fascia surrounding the muscles doesn’t expand. That rising pressure squeezes blood vessels and reduces blood flow to the muscles and nerves, causing ischemia. This creates acute compartment syndrome, a true emergency.

The telltale signs are intense pain that is out of proportion to what you’d expect from the exam, and pain that worsens with passive stretching of the affected muscle. Swelling or a tight, firm feeling in the involved area may be present, and numbness or tingling can occur as nerves are affected. If not treated promptly, the lack of blood flow can lead to muscle necrosis and nerve damage, so relief of pressure through fasciotomy is critical.

Other conditions don’t fit this scenario. Osteomyelitis is an infection of bone, not an immediate pressure issue inside a compartment. Chronic venous insufficiency involves long-standing vein valve problems and edema, not acute pressure from a limb injury. Tetanus is a toxin-mediated muscle stiffness condition, not a pressure-related limb emergency.

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