Medium NCLEX Cardiac Practice Questions

Mastering cardiac care is a cornerstone of nursing practice, as cardiovascular diseases remain a leading cause of morbidity and mortality worldwide. Medium NCLEX Cardiac Practice Questions focus on assessing your ability to synthesize pathophysiological knowledge, prioritize nursing interventions, and interpret diagnostic findings for conditions like heart failure, myocardial infarction, and dysrhythmias.

Concept Explanation

Cardiac nursing care involves the assessment, diagnosis, and management of patients with disorders of the heart and circulatory system. Success on the NCLEX requires an understanding of how the heart functions as a pump and how various pathologies disrupt systemic perfusion. Key concepts include cardiac output, which is the product of heart rate and stroke volume, and the electrical conduction system that coordinates myocardial contraction. When studying for the NCLEX cardiac practice questions, students must focus on the "Big Three": Heart Failure (HF), Coronary Artery Disease (CAD), and Dysrhythmias. For instance, according to the American Heart Association, early recognition of myocardial infarction symptoms can significantly improve patient outcomes. Nurses must be proficient in identifying life-threatening rhythms on an EKG, managing fluid volume overload in renal and cardiac patients, and educating clients on lifestyle modifications and pharmacological therapies such as beta-blockers, ACE inhibitors, and anticoagulants. Understanding these dynamics is essential for tackling NCLEX med surg practice questions that often integrate cardiac health with other systemic issues.

Solved Examples

1. Priority Assessment in Heart Failure: A nurse is caring for a client with chronic heart failure who reports a weight gain of 3 lbs (1.36 kg) over the last 24 hours. What is the nurse's priority action?
   1. Assess the client's breath sounds and respiratory effort.
   2. Review the client's dietary intake of sodium for the last day.
   3. Check the client's most recent serum potassium level.
   4. Document the finding and continue to monitor.
   Solution: The correct answer is 1. In heart failure, rapid weight gain typically indicates fluid retention, which can lead to pulmonary edema. Assessing the airway and breathing (ABC priority) is the first step to ensure the client is not in acute respiratory distress before investigating the cause or documenting.
2. EKG Interpretation: A nurse notes a client's heart rate is 110 bpm with a regular rhythm, but there are no discernible P waves and the QRS complexes are narrow. The rhythm is most likely:
   1. Sinus Tachycardia
   2. Atrial Fibrillation
   3. Supraventricular Tachycardia (SVT)
   4. Ventricular Tachycardia
   Solution: The correct answer is 3. SVT is characterized by a rapid, regular rhythm where the P waves are often buried in the preceding T waves, making them difficult to see. Atrial fibrillation would be irregular, and Ventricular Tachycardia would have wide QRS complexes.
3. Nitroglycerin Administration: A client with stable angina is prescribed sublingual nitroglycerin PRN. Which instruction should the nurse include in the teaching?
   1. "If pain persists after the first dose, call 911 immediately."
   2. "Store the tablets in a clear plastic container for easy access."
   3. "Expect a headache as a common side effect of this medication."
   4. "Swallow the tablet with a full glass of water."
   5. Solution: The correct answer is 3. Nitroglycerin causes systemic vasodilation, which often results in a headache. Clients should be taught to take one dose, wait 5 minutes, and if pain persists or worsens, call 911 before taking a second dose. It must be stored in a dark, glass bottle to prevent degradation.

Practice Questions

1. A client is admitted with a diagnosis of Deep Vein Thrombosis (DVT). Which nursing intervention should be included in the plan of care?
   • Apply sequential compression devices (SCDs) to the affected leg.
   • Massage the affected calf to relieve pain.
   • Elevate the affected extremity above the level of the heart.
   • Encourage vigorous range-of-motion exercises in the affected leg.
2. A client is prescribed lisinopril for hypertension. The nurse should monitor for which adverse effect specific to this medication class?
   • Hypokalemia
   • Persistent dry cough
   • Tachycardia
   • Constipation
3. A nurse is preparing to administer digoxin to a client with heart failure. Which finding would require the nurse to withhold the medication and notify the provider?
   • Blood pressure of 110/70 mmHg
   • Serum potassium level of 3.2 mEq/L
   • Heart rate of 72 bpm
   • Respiratory rate of 18 breaths/min

4. Which laboratory result is the most sensitive indicator of myocardial damage in a client experiencing chest pain?
   • Creatine Kinase (CK-MB)
   • Myoglobin
   • Troponin I
   • C-reactive protein (CRP)
5. A client with a history of Atrial Fibrillation is prescribed warfarin. Which of the following should the nurse include in the discharge teaching?
   • "Increase your intake of spinach and kale to improve blood health."
   • "Use a soft-bristled toothbrush and an electric razor."
   • "You will need to have your aPTT levels checked weekly."
   • "Aspirin should be taken daily for additional heart protection."
6. A nurse is caring for a client who underwent a cardiac catheterization via the right femoral artery. Which assessment finding requires immediate intervention?
   • Right pedal pulse is 1+ (diminished) compared to 2+ on the left.
   • The client reports mild discomfort at the insertion site.
   • The client's blood pressure is 130/82 mmHg.
   • The client's dressing has a small amount of serosanguinous drainage.
7. A client presents to the emergency department with "crushing" chest pain radiating to the left jaw. The nurse should perform which action first?
   • Obtain a 12-lead Electrocardiogram (ECG).
   • Administer 2 mg of Morphine IV.
   • Draw blood for cardiac enzymes.
   • Auscultate heart and lung sounds.
8. A client with Peripheral Arterial Disease (PAD) is being educated on foot care. Which statement by the client indicates a need for further teaching?
   • "I will wash my feet daily with mild soap and warm water."
   • "I will apply heating pads to my feet if they feel cold at night."
   • "I will wear cotton socks to keep my feet dry."
   • "I will avoid walking barefoot even inside my house."

Answers & Explanations

1. Correct Answer: Elevate the affected extremity above the level of the heart. Elevation promotes venous return and reduces edema. Massaging the leg or vigorous exercise is contraindicated as it may dislodge the clot, leading to a pulmonary embolism. SCDs are for prevention, not for an established DVT.
2. Correct Answer: Persistent dry cough. ACE inhibitors like lisinopril prevent the breakdown of bradykinin in the lungs, leading to a dry, hacking cough in some patients. This often requires switching to an Angiotensin II Receptor Blocker (ARB).
3. Correct Answer: Serum potassium level of 3.2 mEq/L. Hypokalemia (low potassium) significantly increases the risk of digoxin toxicity. The nurse must address the low potassium before administering the drug. Digoxin is typically held for a heart rate below 60 bpm, not 72.
4. Correct Answer: Troponin I. Troponin is the most specific and sensitive biomarker for myocardial infarction, as it remains elevated for several days and is only found in cardiac muscle. You can find more about diagnostic markers in our NCLEX fundamentals practice questions.
5. Correct Answer: "Use a soft-bristled toothbrush and an electric razor." Warfarin increases the risk of bleeding. Clients should maintain a consistent (not increased) intake of Vitamin K and have their PT/INR monitored, not aPTT (which is for heparin).
6. Correct Answer: Right pedal pulse is 1+ (diminished) compared to 2+ on the left. A diminished pulse distal to the catheterization site suggests arterial occlusion or hematoma formation, which is a medical emergency.
7. Correct Answer: Obtain a 12-lead Electrocardiogram (ECG). According to the Centers for Disease Control and Prevention guidelines, an ECG should be obtained within 10 minutes of arrival for a client with suspected MI to determine the appropriate treatment path (STEMI vs NSTEMI).
8. Correct Answer: "I will apply heating pads to my feet if they feel cold at night." PAD causes decreased sensation (paresthesia). Using heating pads can cause severe burns because the client may not feel the heat. They should use blankets or warm socks instead. For more on safety, check out the NCLEX patient safety practice questions.

1. Which of the following is a classic sign of right-sided heart failure?

• ACrackles in the lungs
• BJugular venous distention
• CFrothy pink sputum
• DOrthopnea

Frequently Asked Questions

What is the difference between stable and unstable angina?

Stable angina occurs with predictable exertion and is relieved by rest or nitroglycerin, whereas unstable angina is unpredictable, occurs at rest, and indicates an impending myocardial infarction.

Why is potassium monitoring critical for cardiac patients?

Potassium is essential for electrical conduction in the heart; levels that are too high (hyperkalemia) or too low (hypokalemia) can trigger life-threatening dysrhythmias like ventricular fibrillation.

How do ACE inhibitors help in heart failure?

ACE inhibitors reduce the workload on the heart by decreasing systemic vascular resistance (afterload) and reducing fluid retention through the inhibition of aldosterone.

What should I do if a client's EKG shows Ventricular Fibrillation?

Ventricular Fibrillation is a pulseless rhythm that requires immediate activation of the emergency response system, initiation of CPR, and rapid defibrillation.

What is the significance of an S3 heart sound?

An S3 heart sound, often called a ventricular gallop, is a common early sign of fluid volume overload and heart failure in older adults.

Can I use the AI Question Generator for cardiac rhythm practice?

Yes, the AI Question Generator is an excellent resource for creating custom practice sets focused on EKG interpretation and cardiac pharmacology.