Correct Answer: A

Rationale: The correct answer is A, Methylergonovine. Methylergonovine is contraindicated in clients with preeclampsia due to the risk of hypertension. Misoprostol (choice B), Dinoprostone (choice C), and Oxytocin (choice D) are appropriate medications for managing postpartum hemorrhage and are not contraindicated in clients with preeclampsia.

Correct Answer: A

Rationale: Corrected Rationale: Using a pain rating scale is the most appropriate method to assess a patient's pain level post-surgery. Pain rating scales provide a standardized way for patients to communicate their pain intensity, allowing for accurate assessment and effective pain management. Checking vital signs (choice B) is important for monitoring a patient's overall health status but may not directly reflect their pain level. Observing for non-verbal cues (choice C) is valuable, but it may not always provide a clear indication of the pain intensity. Checking for abnormal breath sounds (choice D) is relevant for assessing respiratory status but does not directly evaluate the patient's pain level.

Correct Answer: C

Rationale: A platelet count of 90,000/mm³ indicates thrombocytopenia, which increases the risk of bleeding and requires immediate intervention. Thrombocytopenia can lead to serious bleeding complications, so it is crucial to address this finding promptly. A low white blood cell count (choice A) may indicate neutropenia but is not as immediately life-threatening as severe thrombocytopenia. A hemoglobin level of 8 g/dL (choice B) would require intervention but is not as urgent as addressing a critically low platelet count. A serum potassium level of 3.5 mEq/L (choice D) is on the lower side of normal but does not pose an immediate risk to the client's safety compared to severe thrombocytopenia.

Correct Answer: C

Rationale: The correct action for a nurse caring for a client with deep vein thrombosis (DVT) is to apply warm compresses to the affected extremity. Warm compresses help reduce swelling and pain in clients with DVT. Administering thrombolytics (Choice A) is not typically done without specific orders due to the risk of bleeding. Massaging the affected extremity (Choice B) can dislodge blood clots and lead to complications. Placing the client in a supine position with the legs elevated (Choice D) may increase the risk of clot dislodgment.

Correct Answer: A

Rationale: The correct answer is to administer epinephrine. Epinephrine is the first-line treatment for severe allergic reactions as it helps reverse the symptoms rapidly by constricting blood vessels, increasing heart rate, and opening airways. Antihistamines (Choice B) may help with mild allergic reactions but are not effective for severe cases. Corticosteroids (Choice C) are used to reduce inflammation and are typically not the first-line treatment for acute severe allergic reactions. Administering oxygen (Choice D) may be necessary to support breathing in severe cases, but epinephrine is the primary treatment to reverse the allergic reaction symptoms.