Correct Answer: B

Rationale: The priority nursing action for a client with dehydration is to monitor electrolyte levels. Dehydration can cause imbalances in electrolytes such as sodium and potassium, affecting essential bodily functions. Monitoring electrolyte levels is crucial to promptly identify and correct any imbalances. While administering oral fluids (Choice A) is vital in treating dehydration, monitoring electrolyte levels takes precedence as it directly addresses the underlying imbalance. Administering antiemetics (Choice C) may be necessary for nausea and vomiting but is not the priority over electrolyte monitoring. Encouraging bed rest (Choice D) can conserve energy but is not as critical as monitoring electrolyte levels to prevent complications related to electrolyte imbalances.

Correct Answer: C

Rationale: Instructing the client to avoid the Valsalva maneuver is crucial after rhinoplasty to reduce strain and the risk of bleeding. Administering humidified oxygen may not be directly related to postoperative care for rhinoplasty. Restricting fluids is not typically necessary unless specifically indicated by the healthcare provider. Applying heat packs to the nose is contraindicated after rhinoplasty as it can increase the risk of bleeding and should be avoided.

Correct Answer: D

Rationale: A pulmonary embolism can manifest with sudden shortness of breath, chest pain, and coughing up blood. These symptoms are classic presentations of a pulmonary embolism due to the blockage of blood flow to the lungs. Therefore, the correct answer is 'All of the above.' Each symptom alone can be seen in various other conditions, but when occurring together, they strongly suggest a pulmonary embolism. Sudden shortness of breath is due to decreased oxygenation, chest pain can result from the strain on the heart, and coughing with blood may indicate damage to the lung tissue. Choosing any single symptom would not encompass the full range of presentations seen in a pulmonary embolism.

Correct Answer: B

Rationale: The client should contact their provider if their heart rate drops below 60 beats per minute, as this could indicate digoxin toxicity.

Correct Answer: D

Rationale: The correct intervention when a client develops redness and warmth at the IV site, indicating phlebitis, is to discontinue the IV and notify the provider. This is crucial to prevent further complications. Elevating the IV site and applying an ice pack (Choice A) may not address the underlying issue of phlebitis. Administering an anti-inflammatory medication (Choice B) is not the primary intervention for phlebitis. Applying a cold compress (Choice C) may provide temporary relief but does not address the need to discontinue the IV when phlebitis occurs.