The nurse is providing medication teaching to a client prescribed lisinopril 10 mg PO daily. Which side effect of the medication will the nurse explain to the client is most common?

Choice A reason: Performing a 12-lead electrocardiogram and calling a rapid response is not the first action that the nurse should take. A 12-lead electrocardiogram is a test that measures the electrical activity of the heart and can help diagnose a heart attack or other cardiac problems. ¹ A rapid response is a team of healthcare professionals that can provide immediate care to a client who is experiencing a life-threatening emergency. ² However, these actions are not the priority for a client who has chest pain while brushing their teeth. The nurse should first assess the client's condition and provide comfort measures before performing any tests or calling for help.

Choice B reason: Withholding the client's medications until the healthcare provider arrives is not the first action that the nurse should take. The client's medications may include drugs that can relieve chest pain, such as nitroglycerin, aspirin, or beta-blockers. ³ These drugs can help dilate the blood vessels, prevent blood clots, or reduce the workload of the heart. ³ The nurse should not withhold these medications, as they may help the client's condition and prevent further complications. The nurse should check the client's medication orders and administer them as prescribed.

Choice C reason: Instructing the client to stop the activity and provide a chair is the first action that the nurse should take. Chest pain is a common symptom of coronary artery disease, which is a condition where the arteries that supply blood to the heart become narrowed or blocked by plaque. ⁴ Chest pain can be triggered by physical or emotional stress, such as brushing the teeth, which can increase the heart rate and blood pressure. ⁵ The nurse should instruct the client to stop the activity and provide a chair, as this can help reduce the stress on the heart and ease the chest pain. The nurse should also monitor the client's vital signs and oxygen saturation, and provide oxygen if needed.

Choice D reason: Calling the healthcare provider immediately about the client's complaint is not the first action that the nurse should take. The healthcare provider may need to be notified about the client's condition, especially if the chest pain is severe, persistent, or accompanied by other symptoms, such as shortness of breath, nausea, or sweating. ⁵ However, the nurse should first assess the client's condition and provide comfort measures before calling the healthcare provider. The nurse should also be prepared to initiate emergency protocols if the chest pain does not improve or worsens.

Choice A reason: Increasing the SA to AV node conduction time is not the goal of using diltiazem for variant angina. Diltiazem is a calcium channel blocker that slows down the conduction of electrical impulses in the heart, but this is not the main mechanism of action for relieving variant angina. Variant angina is caused by spasms of the coronary arteries that reduce blood flow to the heart muscle.

Choice B reason: This is the correct answer. Decreasing coronary artery spasm is the goal of using diltiazem for variant angina. Diltiazem relaxes the smooth muscle of the coronary arteries and prevents them from contracting. This improves the blood supply to the heart and reduces the pain and ischemia associated with variant angina.

Choice C reason: Diltiazem does not cause hyperexcitability in the myocardium. This is a false statement. Diltiazem has the opposite effect of reducing the contractility and excitability of the heart muscle. This lowers the oxygen demand of the heart and helps prevent anginal attacks.

Choice D reason: Increasing the heart rate is not the goal of using diltiazem for variant angina. Diltiazem actually decreases the heart rate by blocking the calcium channels in the sinoatrial node and the atrioventricular node. This reduces the workload of the heart and the oxygen consumption. A high heart rate can worsen angina by increasing the oxygen demand of the heart.