Correct Answer: B

Rationale: The correct intervention for a client with COPD is to encourage pursed-lip breathing. Pursed-lip breathing helps maintain airway patency by preventing the collapse of small airways during exhalation, improving breathing efficiency. Administering oxygen at 2 L/min via nasal cannula may be appropriate for some COPD patients but is not the priority intervention. Positioning the client in high Fowler's position may help improve breathing but is not as specific as pursed-lip breathing for COPD. Encouraging deep breathing and coughing may be beneficial in other respiratory conditions, but it is not the most effective intervention for COPD.

Correct Answer: D

Rationale: The correct action for the nurse to take when preparing to insert an indwelling urinary catheter is to open the catheterization kit away from the body. This is crucial to maintain the sterility of the kit and the procedure. Using sterile gloves (Choice A) is important, but it is not specific to this step. Lubricating the catheter with water (Choice B) is incorrect as it should be lubricated with a water-soluble lubricant. Inserting the catheter using clean technique (Choice C) is incorrect as indwelling urinary catheter insertion requires sterile technique to prevent infections.

Correct Answer: A

Rationale: The correct answer is A: Poor hygiene and dehydration are common risk factors for urinary tract infections (UTIs). While choices B, C, and D may play a role in certain cases, poor hygiene and dehydration are more universally recognized as key factors contributing to UTIs. Increased sexual activity and pregnancy (choice B) can also increase the risk of UTIs, but they are not as universal as poor hygiene and dehydration. Choices C and D, the use of urinary catheters and prolonged bed rest, and family history and obesity, respectively, are risk factors for UTIs but are not as commonly associated as poor hygiene and dehydration.

Correct Answer: A

Rationale: The correct answer is to check for air leaks in the tubing every 4 hours when caring for a client with a chest tube. This responsibility is crucial because it ensures proper chest tube function and helps prevent complications such as pneumothorax or hemothorax. Clamping the chest tube (Choice B) can lead to serious issues by causing a tension pneumothorax. Encouraging deep breathing and coughing (Choice C) is important for respiratory hygiene but is not directly related to chest tube care. Keeping the client in a high Fowler's position (Choice D) may be beneficial for some conditions but is not specific to chest tube management.

Correct Answer: A

Rationale: The correct answer is A. In older adults, key signs of a UTI often include confusion and increased temperature. Confusion is a common symptom in the elderly when they have a UTI, and an increase in body temperature can indicate an infection. Choices B, C, and D are incorrect because while painful urination and frequent urination are common UTI symptoms in general, they may not be as prominent in older adults. Dizziness, headache, back pain, and fever can be associated with other conditions but are not typically key signs of a UTI in older adults.