What is the 24-hour day-night cycle known as?

Correct Answer: A

Rationale: The correct answer is circadian rhythm. Circadian rhythm refers to the rhythmic repetition of patterns that occur approximately every 24 hours, regulating various biological processes related to the day-night cycle. Infradian rhythm, which is longer than 24 hours, and ultradian rhythm, which is shorter than 24 hours, are not the correct terms for the 24-hour cycle. Non-REM rhythm does not specifically relate to the 24-hour day-night cycle, making it an incorrect choice.

Correct Answer: D

Rationale: Inhalation injury is the most common cause of injury from a house fire. When a fire occurs, the smoke produced contains harmful gases and particles that can be inhaled, leading to serious respiratory issues. This makes inhalation injury the primary concern during a house fire. Choices A, B, and C are less likely to be the primary cause of injury. While explosions may occur in some cases, inhalation of smoke and toxic fumes is generally the most prevalent danger. Falls from windows and thermal damage to the skin are also significant risks but typically occur after inhalation injuries in the sequence of events during a house fire.

Correct Answer: D

Rationale: Getting a back rub and drinking a glass of warm milk are appropriate measures to promote sleep as they can help relax the body and induce sleepiness. Exercising vigorously, as suggested in choice A, can be counterproductive as it stimulates the body rather than relaxing it, making it harder to fall asleep. Choice B, taking a cool shower and drinking a hot cup of tea, may also increase alertness due to the temperature changes and the caffeine in tea, which can interfere with falling asleep. Watching TV until midnight, as in choice C, exposes the individual to blue light and mental stimulation, making it harder to fall asleep. Therefore, choice D is the best option to promote sleep in this scenario.

Correct Answer: A

Rationale: The correct answer is to release physical restraints every 2 hours. Releasing restraints every 2 hours helps prevent complications associated with prolonged immobilization. Releasing restraints every 30 minutes (choice C) may be too frequent and disruptive to the client's care. Releasing restraints between 1 and 3 hours (choice B) introduces variability that could lead to inconsistencies in care. Releasing restraints at least every 4 hours (choice D) does not adhere to the recommended frequency of every 2 hours.

Correct Answer: C

Rationale: Rifampin has the unusual effect of turning body fluids an orange color. Soft contact lenses might become permanently stained. Clients should be taught about these side effects to avoid unnecessary concern. Option A is incorrect as Rifampin does not cause the urine to turn blue. Option B is incorrect as the client is not infectious to others due to taking Rifampin for prophylaxis. Option D is incorrect as Rifampin does not cause the skin to take on a crimson glow.