Correct Answer: B

Rationale: Increased heart rate is a common sign of fluid volume deficit (FVD) as the body compensates for decreased fluid levels. When a client is experiencing FVD, the body tries to maintain perfusion to vital organs by increasing the heart rate. This compensatory mechanism helps to improve cardiac output and maintain blood pressure. Choices A, C, and D are incorrect because in FVD, hematocrit may be increased due to hemoconcentration, blood pressure tends to decrease as a compensatory response to FVD, and respiratory rate is usually unaffected or may increase due to attempts to maintain oxygenation.

Correct Answer: A

Rationale: Increasing fiber intake is the appropriate intervention to include in the plan of care for a client with chronic constipation due to immobility. Fiber helps add bulk to the stool, making it easier to pass, thereby preventing constipation. Encouraging the client to walk daily (choice B) is also beneficial as it promotes mobility and can help alleviate constipation associated with immobility. Using a stool softener as needed (choice C) and using a laxative daily (choice D) are not the first-line interventions for managing constipation related to immobility. Stool softeners and laxatives should be used judiciously and under healthcare provider guidance.

Correct Answer: B

Rationale: The correct instruction when using a metered-dose inhaler (MDI) is to shake the inhaler vigorously before use. Shaking the inhaler ensures proper mixing of the medication, which is crucial for effective delivery of the medication into the lungs. Inhaling for a specific duration, holding the inhaler at a certain distance from the mouth, or holding the breath after inhalation are not as critical as ensuring proper mixing of the medication by shaking the inhaler.

Correct Answer: B

Rationale: The correct instruction the nurse should include is to ensure the cane has a rubber tip. This is important as it prevents slipping and ensures safety while walking. Choice A is incorrect because the cane should be held on the stronger side to provide better support. Choice C is incorrect as the cane should be used on the stronger, not the dominant, side for stability. Choice D is incorrect because a cane can be used for support in various situations, not just on stairs.

Correct Answer: C

Rationale: The correct answer is C: 'Use a special mattress to reduce pressure on the skin.' This intervention is crucial in preventing skin breakdown in clients with limited mobility as it helps to reduce pressure on bony prominences. Repositioning every 4 hours (Choice A) is important but may not be sufficient to prevent skin breakdown entirely. Applying lotion every 2 hours (Choice B) may not address the root cause of skin breakdown related to pressure. Increasing fluid intake (Choice D) is beneficial for overall skin health but may not directly prevent skin breakdown caused by pressure points.