Correct Answer: A

Rationale: When assessing a client's pulse oximetry values, the nurse should turn off any extra environmental lights that are unnecessary, including exam lights or over-bed lights. External light sources may cause falsely high oximetry values when the extra light interferes with the sensor of the oximeter, leading to inaccurate readings. Choice B is incorrect because a bright light in the client's face would not directly affect the pulse oximetry values. Choice C is incorrect as external light sources typically cause falsely high, not low, oximetry values. Choice D is incorrect as the primary reason for turning off the light is to prevent falsely high readings, not solely for the client's comfort.

Correct Answer: B

Rationale: Compartment syndrome is characterized by swelling and increased pressure within a muscle compartment, leading to decreased blood flow and oxygen supply to nerves and muscles. This can result from various causes, such as trauma or the application of a cast after a fracture. If left untreated, compartment syndrome can lead to tissue necrosis. Choice A is incorrect as pain and tingling starting in the buttock and traveling down the leg are not specific features of compartment syndrome. Choice C is incorrect as permanent flexion of the interphalangeal joint is unrelated to compartment syndrome. Choice D is incorrect as pain and swelling of the median plantar nerve do not describe compartment syndrome.

Correct Answer: C

Rationale: When caring for a client with a broken femur in a traction splint, turning the client to a side-lying position is not recommended. This client is at risk of skin breakdown and complications due to the injury, making it important to prevent unnecessary movement that may increase the risk of injury or discomfort. Palpating the temperature of both feet helps in assessing circulation, evaluating pulses bilaterally ensures perfusion to the extremities, and relieving heel pressure by placing a pillow under the foot helps in reducing pressure points and preventing complications like pressure ulcers. Therefore, the correct answer is turning the client to a side-lying position as it is not a recommended intervention in this scenario.

Correct Answer: D

Rationale: Administering corticosteroids as ordered is appropriate when monitoring intracranial pressure in clients at risk of increased pressure to reduce brain tissue swelling. Elevating the head of the bed helps in managing intracranial pressure by promoting venous drainage. Administering hypertonic solutions is used to reduce brain edema and control intracranial pressure. Increasing the client's core body temperature is not recommended as it can exacerbate brain injury. Corticosteroids are not routinely used for all head injuries but may be indicated in specific cases, such as certain types of brain injuries where swelling needs to be controlled.

Correct Answer: D

Rationale: During the induction stage of anesthesia, the client may exhibit symptoms like euphoria, drowsiness, or dizziness. This stage occurs after the administration of medications by the anesthesiologist and ends when the client loses consciousness. Choice A is incorrect as irregular breathing patterns are not typically associated with the induction stage. Choice B is incorrect as minimal heartbeat and dilated pupils are not commonly observed during this stage. Choice C is incorrect as relaxed muscles, regular breathing, and constricted pupils are not indicative of the induction stage of anesthesia.