Correct Answer: A

Rationale: The correct method for measuring an infant's temperature is by placing the tip of the thermometer under the center of the infant's axilla (armpit). This method is non-invasive and safe. Pulling the pinna of the ear forward is used when taking a tympanic temperature. Inserting the probe into the rectum is done for rectal temperature measurement, which is not recommended as an initial method in infants. Inserting the thermometer in front of the infant's tongue is not a standard method for measuring temperature in infants.

Correct Answer: B

Rationale: The correct answer is B. Metformin should be taken with a full glass of water in the morning to improve absorption and prevent gastrointestinal upset. Choice A is incorrect because metformin is not typically taken at bedtime. Choice C is unrelated to metformin therapy. Choice D is incorrect because metformin is actually better absorbed when taken with or after meals.

Correct Answer: A

Rationale: Correct. Methylprednisolone, a corticosteroid, can lead to increased glucose levels as an adverse effect. Ondansetron is an antiemetic and does not typically cause elevated glucose levels. Guaifenesin is an expectorant and is not associated with raising glucose levels. Amoxicillin is an antibiotic and does not affect glucose levels.

Correct Answer: A

Rationale: The correct intervention for preventing pressure ulcers in a client at risk is to turn the client every 2 hours. This helps relieve pressure on bony prominences, improving circulation and preventing tissue damage. Using a donut-shaped cushion can actually increase pressure on the skin and worsen the risk of pressure ulcers. Elevating the head of the bed to 45 degrees is beneficial for preventing aspiration in some cases but does not directly address pressure ulcer prevention. Massaging reddened areas can further damage the skin and increase the risk of pressure ulcer development by causing friction and shearing forces.

Correct Answer: B

Rationale: The correct answer is to change the TPN tubing every 24 hours. This action helps reduce the risk of infection because the high glucose content of TPN promotes bacterial growth. Choice A is incorrect as changing the tubing every 48 hours would not provide adequate infection prevention. Option C, monitoring urine output, is important for assessing renal function but is not directly related to preventing TPN-related infections. Option D, monitoring weight, is essential for assessing nutritional status but does not directly address infection prevention in TPN administration.