Correct Answer: C

Rationale: Choice C is the correct answer. During a colonoscopy, clients are typically sedated, so they do not feel any pain during the procedure. Choices A, B, and D are incorrect. Clients are usually required to stop eating and drinking at least 24 hours before a colonoscopy, and there are specific dietary restrictions that need to be followed before the procedure to ensure a successful examination.

Correct Answer: A

Rationale: A serum albumin level of 3 g/dL is indicative of poor nutrition, which is commonly associated with pressure ulcers. This finding suggests that the client may be at risk for developing or already has a pressure ulcer due to malnutrition. High-density lipoprotein (HDL) level of 90 mg/dL (Choice B) is not directly related to pressure ulcers. The Norton scale (Choice C) is used to assess a client's risk of developing pressure ulcers, not as a finding in a client with an existing pressure ulcer. The Braden scale (Choice D) is also a tool used to assess the risk of developing pressure ulcers, not a finding in a client with an existing pressure ulcer.

Correct Answer: C

Rationale: The best strategy to ensure the safety of a client with dementia who frequently wanders is to place a bed exit alarm system. This system alerts staff when the client attempts to leave the bed, reducing the risk of falls. Choice A, using restraints, is not the best approach as it can lead to complications and is not recommended unless absolutely necessary. Choice B, encouraging the client to walk in a monitored area, may not be effective in preventing wandering as the client may still wander away. Choice D, asking family members to stay with the client at all times, may not be feasible or practical, especially for round-the-clock supervision.

Correct Answer: A

Rationale: The correct answer is A: Hypoventilation and lung disease. Respiratory acidosis occurs when there is an accumulation of CO2 in the body due to inadequate ventilation. Hypoventilation, which reduces the elimination of CO2, and lung diseases that impair gas exchange are the primary causes. Choice B is incorrect because hyperventilation, not hypoventilation, leads to respiratory alkalosis, not acidosis. Choice C is incorrect because increased oxygen saturation and tachypnea do not directly cause respiratory acidosis. Choice D is incorrect as dehydration and hypoxia do not typically lead to respiratory acidosis.

Correct Answer: A

Rationale: When assessing a patient with chest pain, the initial step is to assess the severity of pain and monitor the electrocardiogram (ECG) to look for signs of cardiac issues. Administering nitroglycerin and oxygen (Choice B) is a treatment option for suspected cardiac chest pain but should not precede a thorough assessment. Administering aspirin and providing pain relief (Choice C) may be indicated later, but the priority is to assess the situation first. Monitoring for nausea and administering IV fluids (Choice D) is not the initial assessment for chest pain unless there are specific indications present.