Correct Answer: A

Rationale: Verifying the client's allergies is the priority action before administering any medication. It is crucial to identify any known allergies to prevent potential allergic reactions, which can be severe and life-threatening. Checking the client's blood pressure, assessing pain levels, and providing education on the medication are important aspects of client care but verifying allergies is essential for ensuring the safety of the client.

Correct Answer: C

Rationale: The correct answer is to advise the client to rise slowly from a sitting or lying position. Beta-blockers can cause bradycardia and hypotension, so clients should be advised to rise slowly to prevent dizziness and falls. Monitoring the client's heart rate and blood pressure regularly is essential. Instructing the client to avoid high-potassium foods (Choice A) is not directly related to beta-blockers. While monitoring the client's heart rate (Choice B) is important, advising the client to rise slowly (Choice C) is more directly related to potential side effects of beta-blockers. Instructing the client to avoid sudden position changes (Choice D) is not as specific or essential as advising them to rise slowly to prevent adverse effects.

Correct Answer: C

Rationale: The correct answer is C. The second nurse should assist with compressions or breathing to ensure the patient receives adequate care during CPR. This immediate intervention is crucial in maintaining blood circulation and oxygenation to vital organs. Choice A is incorrect because simply relieving the nurse performing CPR may lead to a delay in essential life-saving measures. Choice B is incorrect as the primary focus should be on providing direct assistance rather than fetching equipment. Choice D is incorrect as validating the client's advanced directive is not the priority in this emergency situation.

Correct Answer: A

Rationale: Late decelerations indicate fetal distress due to compromised placental perfusion. Repositioning the client onto her left side is the priority intervention as it can increase blood flow to the placenta, improving fetal oxygenation. Applying oxygen via nasal cannula (choice B) can be the next step after repositioning if late decelerations persist. Emergency cesarean section (choice C) is not the initial action for late decelerations unless other interventions are ineffective. Increasing IV fluid administration (choice D) is not the first-line intervention for late decelerations; repositioning takes precedence to address the underlying cause.

Correct Answer: A

Rationale: The correct answer is to prepare to administer protamine sulfate. Abdominal pain and tarry stools are indicative of gastrointestinal bleeding, a serious side effect of heparin therapy. Protamine sulfate is the antidote for heparin and is used to reverse its effects in cases of bleeding. Continuing the heparin infusion (Choice B) is not appropriate when the client is experiencing signs of bleeding. Monitoring vital signs and assessing abdominal pain (Choice C) is important but not the priority when immediate action is required to address potential bleeding. Administering morphine sulfate (Choice D) is not the priority in this situation; addressing the underlying cause of bleeding takes precedence.