Correct Answer: D

Rationale: The most crucial intervention when caring for a client with a chest tube is to ensure that the chest tube is connected to a water-seal drainage system (D). This system helps maintain proper lung expansion and prevents complications. Keeping the drainage system at chest level (A) is important to facilitate drainage, but not as critical as ensuring the connection to the drainage system. Clamping the chest tube (B) is unnecessary and can lead to serious issues. Stripping the chest tube (C) is an outdated practice and can cause harm rather than benefit.

Correct Answer: C

Rationale: Pursed-lip breathing is used to increase the amount of carbon dioxide exhaled (C) in clients with chronic obstructive pulmonary disease (COPD). By doing so, it helps prevent air trapping and enhances gas exchange, ultimately improving respiratory efficiency. While removing secretions (A), reducing air trapping (B), and slowing the respiratory rate (D) can be associated benefits, the primary goal of pursed-lip breathing is to optimize carbon dioxide elimination and enhance breathing mechanics.

Correct Answer: C

Rationale: A report of shortness of breath (C) indicates that the client is not tolerating the oxygen therapy well and may need an adjustment. Shortness of breath is a critical symptom in a client with COPD, as it signifies potential respiratory distress. A respiratory rate of 14 (A), oxygen saturation of 92% (B), and respiratory rate of 24 (D) are not as immediately concerning as they may still fall within acceptable ranges for a client with COPD.

Correct Answer: B

Rationale: During digital removal of a fecal impaction, a vagal response can occur due to stimulation of the anal sphincter. If the client experiences bradycardia (pulse rate decreases), the nurse should stop the procedure immediately and take corrective action to prevent any complications.

Correct Answer: B

Rationale: A lactating woman (B) has the greatest need for additional protein intake. Lactation increases the metabolic demands for protein to support milk production, making it essential for the mother to have a higher protein intake. While clients in choices A, C, and D also require protein for various reasons, they do not have the same increased protein demands as a lactating woman.