Which of the following can aid in the prevention of pulmonary embolisms in immobilized patients?

Pneumatic compression devices are instrumental in preventing pulmonary embolisms in immobilized patients by promoting venous blood flow in the lower extremities. These devices work by applying controlled pressure to the legs, which helps to activate the muscle pump mechanism, facilitating circulation and reducing the likelihood of blood clots forming in the deep veins. This is especially important for patients who are unable to move regularly due to their condition, as immobility significantly increases the risk of venous thromboembolism.

The other options do not directly contribute to the prevention of pulmonary embolisms. Regular imaging is primarily used for diagnosing conditions rather than preventing them. Antibiotic therapy is indicated for treating infections and does not play a role in preventing blood clots. Chest x-rays are useful for visualizing lung conditions but do not prevent embolisms or enhance venous flow. Therefore, pneumatic compression devices are the most effective option in this scenario for preventing pulmonary embolisms in patients with limited mobility.