Correct Answer: D

Rationale: Venous stasis is a negative effect of immobility on the cardiovascular system. Immobility can lead to blood pooling in the veins due to lack of movement, increasing the risk of blood clots. Choices A, B, and C are incorrect because immobility does not lead to an increase in high density lipoprotein, circulation, or the pumping action of the heart.

Correct Answer: A

Rationale: Placing the bed in the lowest possible position increases the risk of injury because it does not support proper body mechanics. When lifting a client, it is important to have the bed at a comfortable height to avoid strain. Using the legs when lifting (choice B) is correct as it reduces the strain on the back. Keeping feet apart to provide a wide base of support (choice C) helps with stability and balance. Facing the direction of the movement (choice D) is essential for maintaining proper alignment and reducing the risk of injury.

Correct Answer: B

Rationale: The correct answer is B, Dual-energy X-ray absorptiometry (DXA) scan, which is commonly used to diagnose osteoporosis by measuring bone mineral density. Phalen's maneuver (choice A) is a test used to assess for carpal tunnel syndrome and is not related to osteoporosis. Proprioception (choice C) refers to the sense of body position and is not a diagnostic test for osteoporosis. Blood culture (choice D) is used to detect infections caused by bacteria in the bloodstream and is not relevant to the diagnosis of osteoporosis.

Correct Answer: D

Rationale: Tinnitus is the correct answer. Tinnitus refers to the perception of noise or ringing in the ears. This condition can be constant or intermittent and may be caused by various factors such as exposure to loud noises, ear infections, or underlying health conditions. Choices A, B, and C are incorrect as Weber and Rinne tests are related to hearing assessment, while the pinna is the external part of the ear responsible for collecting sound waves.

Correct Answer: B

Rationale: The correct answer is B, avascular necrosis. Avascular necrosis is the condition where bone tissue dies due to the disruption of blood supply to the bone. Reflex sympathetic dystrophy (Choice A) is a chronic pain condition, delayed union (Choice C) refers to a delayed healing of a fracture, and complex regional pain syndrome (Choice D) is a chronic pain condition typically affecting an arm or leg.