Correct Answer: B

Rationale: Diminished deep tendon reflexes are a sign of magnesium toxicity. Magnesium sulfate can depress the central nervous system, leading to decreased reflexes. Respiratory rate of 12/min, urine output 40 mL/hr, and systolic blood pressure of 140 mm Hg are not specific findings of magnesium toxicity. Respiratory depression, oliguria, and hypotension are more concerning signs that require immediate attention.

Correct Answer: B

Rationale: The correct answer is B: Wear a dosimeter badge. When caring for a client with a sealed radiation implant, the nurse should wear a dosimeter badge to monitor radiation exposure. This badge helps measure the amount of radiation the nurse is exposed to during care. Choice A is incorrect because removing dirty linens after double-bagging is not directly related to managing radiation exposure. Choice C is incorrect as there is no specific time limit on visitors mentioned in the context of a sealed radiation implant. Choice D is incorrect as there is no evidence supporting the need for family members to stay a specific distance away from the client.

Correct Answer: C

Rationale: The correct answer is to instruct the client to restrict protein intake. In chronic renal failure, the kidneys are unable to effectively filter waste products, so limiting protein helps reduce the buildup of waste in the body. Increasing calcium intake (Choice A) is not typically necessary unless there is a specific deficiency. Providing a diet high in potassium (Choice B) is contraindicated as potassium levels need to be monitored and controlled in renal failure. Increasing fluid intake (Choice D) may be necessary depending on the individual's condition, but restricting protein intake is a more critical dietary instruction for clients with chronic renal failure.

Correct Answer: D

Rationale: Withholding heparin IV infusion is the priority if there is a risk of complications such as bleeding, which must be evaluated before continuing treatment.

Correct Answer: B

Rationale: The correct answer is B: Jitteriness of the hands. Jitteriness is a key sign of cold stress in a newborn, indicating the need for immediate warming measures. A respiratory rate of 60/min may not be directly indicative of cold stress. Diaphoresis (excessive sweating) and bounding peripheral pulses are not typical findings associated with cold stress in newborns.