LVN COMPREHENSIVE CERTIFICATION EXAM 200 QUESTIONS COVERING ALL TESTED TOPICS COMPLETE WITH 100% CORRECT ANSWERS

LVN COMPREHENSIVE CERTIFICATION EXAM 200 QUESTIONS COVERING ALL TESTED TOPICS COMPLETE WITH 100% CORRECT ANSWERS Question 1: A patient with chronic obstructive pulmonary disease (COPD) has an oxygen saturation of 88% on room air. The LVN should anticipate which oxygen delivery method as most appropriate? A. Non-rebreather mask at 15 L/min B. Nasal cannula at 2 L/min C. Simple face mask at 10 L/min D. Venturi mask at 40% FiO2 CORRECT ANSWER: B. Nasal cannula at 2 L/min Rationale: Patients with COPD often have chronic hypercapnia and rely on hypoxic drive to stimulate breathing. High-flow oxygen can suppress this drive and lead to respiratory depression. Low-flow oxygen via nasal cannula at 1-3 L/min is preferred to maintain oxygen saturation between 88-92% while avoiding suppression of respiratory drive. ________________________________________ Question 2: A patient is scheduled for a colonoscopy. The LVN reinforces teaching about the bowel preparation. Which statement by the patient indicates understanding? A. "I can eat a light breakfast the morning of the procedure." B. "I will drink clear liquids only for 24 hours before the procedure." C. "I should take my regular insulin dose as prescribed." D. "I can have dairy products up to 12 hours before the procedure." CORRECT ANSWER: B. "I will drink clear liquids only for 24 hours before the procedure." Rationale: Clear liquid diet is required before a colonoscopy to ensure the bowel is clean for visualization. Dairy products, solid foods, and colored liquids are typically restricted. Insulin adjustments should be discussed with the healthcare provider as fasting may require dosage changes. ________________________________________ Question 3: The LVN is caring for a patient with a nasogastric tube attached to low intermittent suction. Which assessment finding requires immediate intervention? A. Greenish-yellow drainage of 300 mL over 8 hours B. Patient complaining of nausea and abdominal distention C. Mild erythema around the nares D. Tube drainage appearing bloody with coffee-ground material CORRECT ANSWER: D. Tube drainage appearing bloody with coffee-ground material Rationale: Coffee-ground drainage indicates possible upper gastrointestinal bleeding requiring immediate notification of the RN and healthcare provider. Nausea and distention may indicate tube obstruction requiring irrigation. Mild erythema is expected and can be managed with skin care. ________________________________________ Question 4: A patient with heart failure is prescribed furosemide. Which laboratory value should the LVN monitor closely? A. Serum sodium of 140 mEq/L B. Serum potassium of 3.2 mEq/L C. Serum chloride of 100 mEq/L D. Serum calcium of 9.5 mg/dL CORRECT ANSWER: B. Serum potassium of 3.2 mEq/L Rationale: Furosemide is a loop diuretic that causes potassium wasting. Hypokalemia (potassium below 3.5 mEq/L) can lead to cardiac dysrhythmias, especially in patients taking digoxin. Regular monitoring of potassium levels and replacement as prescribed is essential. ________________________________________ Question 5: The LVN is reinforcing teaching about fall prevention for an elderly patient. Which intervention is most important to include? A. Keep the bed in the highest position for easy transfer B. Encourage the patient to wear socks without nonskid soles C. Place the call light within easy reach at all times D. Keep the room dark to promote sleep CORRECT ANSWER: C. Place the call light within easy reach at all times Rationale: Having the call light within reach allows the patient to summon assistance before attempting to get up independently, reducing fall risk. Beds should be in the lowest position, nonskid footwear should be worn, and adequate lighting should be maintained for safety. ________________________________________ Question 6: A patient with schizophrenia is prescribed haloperidol. The LVN should monitor for which adverse effect? A. Weight gain and sedation B. Extrapyramidal symptoms C. Hypertensive crisis D. Serotonin syndrome CORRECT ANSWER: B. Extrapyramidal symptoms Rationale: Haloperidol is a first-generation antipsychotic that commonly causes extrapyramidal symptoms including dystonia, parkinsonism, akathisia, and tardive dyskinesia. These movement disorders require monitoring and may necessitate medication adjustment or addition of anticholinergic agents. ________________________________________ Question 7: The LVN is preparing to administer an enteral feeding through a gastrostomy tube. Which action should be taken first? A. Flush the tube with 30 mL of water B. Verify tube placement by aspirating gastric contents C. Warm the formula to room temperature D. Position the patient in a supine position CORRECT ANSWER: B. Verify tube placement by aspirating gastric contents Rationale: Verification of tube placement is essential before each feeding to prevent aspiration. Checking gastric residual volume and assessing pH of aspirated contents confirms correct placement. The