Nokea
The nurse will suspect that the patient with stable angina is experiencing an adverse effect of the prescribed metoprolol if which of the following findings are assessed?
- A. The patient is restless and agitated.
- B. The blood pressure is 190/110 mm Hg.
- C. The patient complains about feeling anxious.
- D. The cardiac monitor shows a heart rate of 45.
Correct Answer: D
Rationale: Patients taking β-adrenergic blockers should be monitored for bradycardia. Because this category of medication inhibits the sympathetic nervous system, restlessness, agitation, hypertension, and anxiety will not be adverse effects.
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The nurse is developing a health teaching plan for a 60-year-old man with the following risk factors for coronary artery disease (CAD). Which of the following risk factors should the nurse focus on when teaching the patient?
- A. Family history of coronary artery disease
- B. Increased risk associated with the patient's gender
- C. High incidence of cardiovascular disease in older people
- D. Elevation of the patient's serum low density lipoprotein (LDL) level
Correct Answer: D
Rationale: Because family history, gender, and age are nonmodifiable risk factors, the nurse should focus on the patient's LDL level. Decreases in LDL will help reduce the patient's risk for developing CAD.
The nurse is caring for a patient with newly diagnosed Prinzmetal's (variant) angina and has a prescription for amlodipine. Which of the following information is accurate about amlodipine?
- A. Reduce the 'fight or flight' response
- B. Decrease spasm of the coronary arteries
- C. Increase the force of myocardial contraction
- D. Help prevent clotting in the coronary arteries
Correct Answer: B
Rationale: Prinzmetal's angina is caused by coronary artery spasm. Calcium channel blockers (e.g., amlodipine, nifedipine) are a first-line therapy for this type of angina. Platelet inhibitors, such as Aspirin, help prevent coronary artery thrombosis, and β-blockers decrease sympathetic stimulation of the heart. Medications or activities that increase myocardial contractility will increase the incidence of angina by improving oxygen demand.
Which of the following approaches to preventing a recurrence of sudden cardiac death is the most common?
- A. Long-term Aspirin therapy
- B. Implantable cardioverter-defibrillator
- C. Administration of amiodarone
- D. Continuous Holter monitoring
Correct Answer: B
Rationale: The most common approach to preventing a recurrence is the use of an implantable cardioverter-defibrillator (ICD). Research has shown survival rates are better with an ICD than with drug therapy alone. Drug therapy with amiodarone may be used in conjunction with an ICD to decrease episodes of ventricular dysrhythmias. Continuous monitoring will not prevent a recurrence. Aspirin will not prevent a recurrence of SCD.
The nurse is caring for a patient who has had severe chest pain for several hours and a diagnosis of possible acute myocardial infarction. Which of the following prescribed laboratory tests should the nurse monitor to help determine the diagnosis?
- A. Homocysteine
- B. C-reactive protein
- C. Cardiac-specific troponin
- D. High-density lipoprotein (HDL) cholesterol
Correct Answer: C
Rationale: Troponin levels increase about 3-12 hours after the onset of myocardial infarction (MI). The other laboratory data are useful in determining the patient's risk for developing coronary artery disease (CAD) but are not helpful in determining whether an acute MI is in progress.
The nurse is administering IV nitroglycerin to a patient with a myocardial infarction (MI). Which of the following actions should the nurse take to evaluate the effectiveness of the medication?
- A. Check blood pressure.
- B. Monitor apical pulse rate.
- C. Monitor for dysrhythmias.
- D. Ask about chest discomfort.
Correct Answer: D
Rationale: The goal of IV nitroglycerin administration in MI is relief of chest pain by improving the balance between myocardial oxygen supply and demand. The nurse also will monitor heart rate and BP and observe for dysrhythmias, but these parameters will not indicate whether the medication is effective.