Correct Answer: A

Rationale: Choice A is the correct answer as nightmares about upcoming surgery indicate psychological distress commonly associated with fears, anxiety, and stress related to the treatment. Choices B, C, and D suggest positive emotions and proactive behaviors that are not typical signs of psychological distress in this context. Feeling more energetic, making future plans, and looking forward to treatment are generally positive indicators of coping and adjustment to the situation.

Correct Answer: C

Rationale: The correct answer is C because effective teaching is demonstrated when the client can independently perform ostomy care. This indicates that the client has understood and retained the information provided during teaching. Choices A, B, and D are incorrect because demonstrating how to irrigate the colostomy, verbalizing understanding of dietary changes, and expressing feelings about the impact of the colostomy are important aspects of care but do not directly reflect the client's ability to apply the taught information in a practical setting.

Correct Answer: B

Rationale: Measuring the client's oxygen saturation level is the most important assessment in this scenario. Oxygen saturation level reflects how well the client is oxygenating, which is crucial in assessing the effectiveness of oxygen therapy for a client with COPD. Monitoring the respiratory rate and effort (Choice A) is important but assessing oxygenation with saturation levels takes precedence. While arterial blood gas levels (Choice C) provide comprehensive information, checking oxygen saturation is a quicker and more immediate way to assess oxygenation status. Checking blood pressure (Choice D) is not the priority when evaluating the effectiveness of oxygen therapy in COPD.

Correct Answer: C

Rationale: Ensuring the water seal chamber is filled to the appropriate level is crucial to maintain the effectiveness of the chest tube drainage system. This step helps prevent air from entering the pleural space, ensuring proper lung re-expansion. 'Milking' the chest tube is not recommended as it can cause damage to the chest tube and surrounding tissues. Clamping the chest tube is not advisable as it can lead to tension pneumothorax. Securing the chest tube to the bed is important for stability but does not directly impact the functioning of the chest tube.

Correct Answer: B

Rationale: Checking the client's weight daily is essential for monitoring fluid status in dehydration. Administering antihypertensives, notifying the provider of insufficient urine output, and encouraging ambulation are not primary interventions for managing dehydration. Administering antihypertensives may affect blood pressure, but it is not a direct intervention for dehydration. Notifying the provider of a urine output less than 30 mL/hr indicates oliguria, which is a sign of reduced kidney function rather than dehydration. Encouraging ambulation is a general nursing intervention and does not directly address the fluid imbalance associated with dehydration.