Correct Answer: A

Rationale: The pain of an MI is often accompanied by shortness of breath and feelings of fear or anxiety. It typically lasts longer than 15 minutes and is not relieved by nitroglycerin. Unlike stable angina, the pain of an MI occurs without a known cause such as exertion.

Correct Answer: C

Rationale: An inotropic agent is a medication that increases the force of the heart's contractions, which helps improve cardiac output. Choice A and B are incorrect as inotropic agents do not constrict or dilate vessels. Choice D is also incorrect as inotropic agents do not slow down the heart rate but rather enhance the heart's contractility.

Correct Answer: D

Rationale: Placing the client in a high Fowler's position is the best action in this situation as it helps to maximize lung expansion, improve breathing, and decrease the work of breathing. This position allows for better chest expansion, improving oxygenation and ventilation for the client in respiratory distress.

Correct Answer: C

Rationale: When communicating with clients with Alzheimer's disease, using simple and direct statements is the most appropriate technique. This approach helps to minimize confusion, enhance understanding, and facilitate effective communication with individuals who may have difficulty processing complex information due to their condition.

Correct Answer: A

Rationale: In a client presenting with a new onset of confusion, checking the blood glucose level first is crucial as hypoglycemia can cause confusion and is easily correctable. Addressing hypoglycemia promptly is essential to prevent further complications.