A 75-year-old male has severe chest pain and dials 911. Lab tests at the hospital reveal elevated levels of cardiac troponin. Based upon the lab findings, the nurse suspects which of the following has occurred:

Left ventricular heart failure

Unstable angina

Myocardial infarction (MI)

Prinzmetal angina

Answer and Explanation

The Correct Answer is C

Choice A reason:
Left ventricular heart failure can cause severe chest pain and elevated cardiac enzymes but is not as directly associated with elevated cardiac troponin levels as a myocardial infarction. The presence of elevated troponin levels specifically indicates myocardial cell injury, which is most consistent with an MI.

Choice B reason:
Unstable angina involves chest pain that is not relieved by rest and may indicate a higher risk for an MI. However, it typically does not result in elevated cardiac troponin levels unless there is actual myocardial damage. Elevated troponin is a marker for myocardial infarction rather than just unstable angina.

Choice C reason:
Myocardial infarction (MI) is the correct answer. Elevated levels of cardiac troponin are a key indicator of myocardial infarction as they reflect heart muscle damage. The patient's severe chest pain and elevated troponin levels strongly suggest that an MI has occurred.

Choice D reason:
Prinzmetal angina, or variant angina, is characterized by chest pain caused by coronary artery spasms. While it can cause significant pain, it does not typically lead to elevated cardiac troponin levels unless it results in myocardial damage, which is less common than in an MI.

Nursing Test Bank

Quiz #1: RN Exams Pharmacology Exams Quiz #2: RN Exams Medical-Surgical Exams Quiz #3: RN Exams Fundamentals Exams Quiz #4: RN Exams Maternal-Newborn Exams Quiz #5: RN Exams Anatomy and Physiology Exams Quiz #6: RN Exams Obstetrics and Pediatrics Exams Quiz #7: RN Exams Fluid and Electrolytes Exams Quiz #8: RN Exams Community Health Exams Quiz #9: RN Exams Promoting Health across the lifespan Exams Quiz #10: RN Exams Multidimensional care Exams

Get 100+ Naxlex Exit Exams for $79 Try Naxlex NCLEX-RN (14 Day Free-Trial)

Naxlex Comprehensive Predictor Exams

Quiz #1: Naxlex RN Comprehensive online practice 2019 B with NGN Quiz #2: Naxlex RN Comprehensive Predictor 2023 Quiz #3: Naxlex RN Comprehensive Predictor 2023 Exit Exam A Quiz #4: Naxlex HESI Exit LPN Exam Quiz #5: Naxlex PN Comprehensive Predictor PN 2020 Quiz #6: Naxlex VATI PN Comprehensive Predictor 2020 Quiz #8: Naxlex PN Comprehensive Predictor 2023 - Exam 1 Quiz #10: Naxlex HESI PN Exit exam Quiz #11: Naxlex HESI PN EXIT Exam 2

Free Nursing Study Resources

Correct Answer is B

Explanation

Choice A reason:
Amphotericin B is an antifungal medication and is not used to treat viral infections such as herpes-zoster. This choice is incorrect because it does not target the herpes virus, which causes conditions like shingles.
Choice B reason:
Acyclovir is an antiviral medication specifically used to treat infections caused by the herpes virus, including herpes-zoster (shingles). It works by inhibiting viral replication, reducing the severity and duration of symptoms. This makes it the correct choice for treating herpes-zoster infection.
Choice C reason:
Azole antifungals are used to treat fungal infections, not viral infections like herpes-zoster. This choice is incorrect as it does not relate to the treatment of the herpes virus.
Choice D reason:
Tamiflu is an antiviral medication used to treat influenza, not herpes-zoster. While it targets a viral infection, it is specific to the influenza virus and not effective against the herpes virus. Therefore, this choice is incorrect.

A. Metoprolol B. Amiodarone C. Lidocaine D. Verapamil

Correct Answer is B

Explanation

Choice A reason:
Metoprolol is a beta-blocker that primarily affects the heart by reducing heart rate and contractility. It does not specifically block the efflux of potassium. Beta-blockers are used to manage high blood pressure, angina, and certain arrhythmias, but they do not target potassium channels directly.

Choice B reason:
Amiodarone is an antiarrhythmic medication that blocks the efflux of potassium from cardiac cells. It prolongs the repolarization phase of the cardiac action potential by inhibiting potassium channels, which helps to stabilize cardiac rhythms and prevent arrhythmias. This mechanism makes amiodarone effective in treating various types of arrhythmias.

Choice C reason:
Lidocaine is a class IB antiarrhythmic that primarily blocks sodium channels in the heart. It is used to treat acute ventricular arrhythmias, especially after a myocardial infarction. While it affects the electrical activity of the heart, it does not specifically block potassium efflux.

Choice D reason:
Verapamil is a calcium channel blocker that primarily affects the influx of calcium into cardiac and smooth muscle cells. It is used to treat hypertension, angina, and certain arrhythmias, but it does not block potassium efflux.

View Question and Answer

Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.

Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today

A 75-year-old male has severe chest pain and dials 911. Lab tests at the hospital reveal elevated levels of cardiac troponin. Based upon the lab findings, the nurse suspects which of the following has occurred:

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A patient comes to the clinic for a herpes-zoster infection? (Select all that apply)

Correct Answer is B

Explanation

Which medication blocks the efflux (outflow) of potassium at the heart muscle?

Correct Answer is B

Explanation

Which modes of transmission occur with HIV infection? (Select all that apply)

A nurse is discussing intravenous Amphotericin B treatment with a nursing student who is about to care for a patient with a systemic fungal infection. Which statement by the student indicates a need for further teaching?

A nurse caring for a patient receiving heparin therapy notes that the patient has a heart rate of 110 beats per minute and a blood pressure of 90/62 mm Hg. A stat CBC shows a platelet count of less than 50,000, which is a low platelet count. The previous platelet level was 375,000. The nurse will:

A nurse reads in a drug information guide that PO (oral) morphine has a high first-pass effect. Which of the following statements would demonstrate the nurse's understanding of the first-pass effect?

What is the primary cause of hepatic encephalopathy (from chronic liver disease)?

A patient with a history of chronic alcohol abuse has been admitted to the unit with cirrhosis. Upon review of the patient's laboratory test results, the nurse notes that the patient's ammonia level is elevated at 218 mcg/dL. What medication should the nurse prepare to administer?

Anurse is discussing intravenous Amphotericin B treatment with a nursing student who is about to care for a patient with a systemic fungal infection. Which statement by the student indicates a need for further teaching?