Correct Answer: A

Rationale: The correct answer is A: Fever, chills, and increased heart rate are classic signs of an infection. These symptoms indicate the body's response to an invading pathogen. Choice B, 'Increased white blood cell count and fever,' is not a primary symptom that a person would typically notice themselves, and white blood cell count needs to be tested. Choice C, 'Shortness of breath and confusion,' may indicate other conditions like heart or lung issues rather than a general infection. Choice D, 'Sweating and low blood pressure,' are not specific to infections and can be caused by various factors like heat or dehydration.

Correct Answer: D

Rationale: In cases of magnesium sulfate toxicity, calcium gluconate is the antidote that should be administered promptly. Positioning the client supine (Choice A) is not the priority in this scenario. Administering dextrose 5% in water (Choice B) is not indicated for magnesium sulfate toxicity. Methylergonovine IM (Choice C) is used for postpartum hemorrhage, not for magnesium sulfate toxicity.

Correct Answer: A

Rationale: The correct procedure for inserting a nasogastric (NG) tube involves measuring the tube to ensure the appropriate length for insertion and using lubrication to reduce discomfort and aid in smooth insertion. Choice B is incorrect as measuring the tube is essential for proper placement. Choice C is incorrect as lubrication helps in easing the insertion process. Choice D is incorrect as checking the placement comes after insertion and should not be done simultaneously with the insertion process.

Correct Answer: A

Rationale: The correct way to assess for pitting edema is to press over a bony area, typically the tibia, for 5 seconds and then release. This allows for the identification of pitting edema, characterized by an indentation that persists for a few seconds. Choice B is incorrect as pitting edema assessment does not involve checking for discoloration. Choice C is incorrect as the presence of a rash is not indicative of pitting edema. Choice D is incorrect as rebound tenderness is a different assessment used for abdominal conditions, not for pitting edema.

Correct Answer: B

Rationale: The correct teaching point is to maintain two points of support on the ground at all times when using a cane. This ensures stability and helps distribute weight evenly. Choice A is incorrect because the cane should be used on the stronger side of the body to provide support to the weaker leg. Choice C is incorrect as advancing the cane too far with each step can lead to imbalance. Choice D is incorrect as advancing the cane and the strong leg simultaneously may not provide adequate support for the weaker leg.