Correct Answer: C

Rationale: The correct answer is C: 'Furrows in the tongue.' Dehydration commonly presents with furrows in the tongue due to decreased oral moisture. This physical finding indicates dehydration as the tongue loses moisture and becomes dry. Choice A, 'Bradycardia,' is not typically associated with dehydration; instead, tachycardia may be present as a compensatory mechanism. Elevated blood pressure, as mentioned in choice B, is not a typical finding in dehydration; in fact, dehydration often leads to a decrease in blood pressure. Polyuria, as in choice D, is more commonly associated with conditions like diabetes mellitus or diabetes insipidus, rather than dehydration.

Correct Answer: A

Rationale: The correct teaching point for a client with left-leg weakness learning to use a cane is to maintain two points of support on the ground at all times. This ensures stability and helps prevent falls. Choice B, using the cane on the weak side of the body, may lead to imbalance and decreased support. Choice C, advancing the cane a specific distance with each step, is not as crucial as maintaining two points of support. Choice D, advancing the cane and the strong leg simultaneously, may also compromise stability and support for the weak leg.

Correct Answer: A

Rationale: The priority is to determine if the client is experiencing psychotic thinking or suicidal ideation. In this situation, the nurse needs to assess if the client is having distorted thoughts or losing touch with reality, which could pose an immediate risk to the client's safety. While determining the client's support system, asking how the client copes with stress, and assessing vital signs are important aspects of care, they are not the priority when there is a concern about potential psychotic thinking or suicidal ideation.

Correct Answer: C

Rationale: The correct intervention for a client at risk for pressure ulcers is to turn and reposition the client every 2 hours. This helps relieve pressure on bony prominences, improving circulation and reducing the risk of pressure ulcer development. Applying heat to the affected area (Choice A) can increase the risk of skin breakdown. Placing the client in a prone position (Choice B) can also increase pressure on certain areas, leading to pressure ulcers. Providing the client with a bedpan every 4 hours (Choice D) is not directly related to preventing pressure ulcers.

Correct Answer: B

Rationale: The correct answer is B. Applying diaper cream during each diaper change is important to prevent skin breakdown in infants with rotavirus. Rotavirus can cause diarrhea, which can lead to skin irritation. Avoiding feeding the baby for 12 hours (choice A) can lead to dehydration and is not appropriate. Giving water between feedings (choice C) can further contribute to dehydration. Applying warm compresses (choice D) may provide comfort but does not address the specific issue of preventing skin breakdown associated with rotavirus.