LVN – Licensed Vocational Nurse
(California & Texas) Comprehensive
Certification & Licensing Review | 200+
Practice Questions & Verified Answers |
Ultimate LVN & NCLEX-PN Exam Prep
Study Guide, Nursing Fundamentals,
Pharmacology, Medical-Surgical Nursing,
Patient Assessment, Infection Control,
Maternal-Newborn Care, Pediatrics, Mental
Health, Clinical Skills, Patient Safety,
Detailed Rationales
Question 1: A patient with a history of myasthenia gravis is admitted with
severe muscle weakness and respiratory distress. The nurse notes that the
patient's last dose of pyridostigmine was administered 2 hours ago. Which
assessment finding would indicate a cholinergic crisis rather than a
myasthenic crisis?
A. Increased muscle strength after administration of edrophonium
B. Pupillary miosis and excessive salivation
C. Absent deep tendon reflexes and ptosis
D. Heart rate of 110 beats per minute and dry mucous membranes
CORRECT ANSWER: B. Pupillary miosis and excessive salivation
Rationale: Cholinergic crisis results from excessive acetylcholinesterase inhibitor
medication, leading to overstimulation of muscarinic receptors. Classic signs include
miosis (pinpoint pupils), bradycardia, excessive salivation, lacrimation, sweating, and
gastrointestinal cramping. Myasthenic crisis is due to undertreatment and would show
improvement with edrophonium (Tensilon test), while cholinergic crisis would worsen.
Question 2: A LVN is caring for a post-operative patient following a total hip
arthroplasty. Which finding requires immediate notification of the registered
nurse and healthcare provider?
A. Pain level of 4 on a 0-10 scale at the surgical site
B. Urinary output of 40 mL per hour via indwelling catheter
C. Swelling and pain in the ipsilateral calf that is warm to the touch
D. Oxygen saturation of 95% on room air
CORRECT ANSWER: C. Swelling and pain in the ipsilateral calf that is warm to
the touch
Rationale: These findings are classic signs of a deep vein thrombosis (DVT), a serious
postoperative complication that can lead to pulmonary embolism. DVT prophylaxis and
early detection are critical in hip arthroplasty patients. The other findings are within
acceptable parameters or expected postoperative findings.
Question 3: A patient is prescribed digoxin for heart failure. Which laboratory
value would place the patient at the highest risk for digoxin toxicity?
,A. Serum potassium of 3.0 mEq/L
B. Serum sodium of 142 mEq/L
C. Serum calcium of 9.2 mg/dL
D. Serum magnesium of 2.5 mEq/L
CORRECT ANSWER: A. Serum potassium of 3.0 mEq/L
Rationale: Hypokalemia (potassium < 3.5 mEq/L) increases the risk of digoxin toxicity
because digoxin competes with potassium for binding sites on the sodium-potassium
ATPase pump. Low potassium levels potentiate digoxin's effects, leading to
dysrhythmias. Normal sodium, calcium, and magnesium levels do not carry the same
heightened risk for digoxin toxicity.
Question 4: The LVN is reinforcing dietary teaching for a patient with chronic
kidney disease who is on a protein-restricted diet. Which food choice by the
patient indicates a need for further teaching?
A. A small apple
B. A slice of white bread
C. A 4-ounce grilled chicken breast
D. A half cup of white rice
CORRECT ANSWER: C. A 4-ounce grilled chicken breast
Rationale: Patients with chronic kidney disease on protein restriction are typically
limited to 0.6-0.8 g/kg of protein per day. High-protein animal sources like chicken
breast are restricted. The apple, white bread, and white rice are primarily carbohydrates
and are more appropriate for this diet, though portion sizes for carbohydrates may also
need to be managed depending on the presence of diabetes.
Question 5: A patient is admitted with a diagnosis of acute pancreatitis. Which
dietary prescription is most appropriate during the acute phase of this
condition?
A. Clear liquid diet with high protein supplements
B. Low-fat, high-carbohydrate diet
C. NPO with IV fluids
D. Soft, bland diet with six small feedings
CORRECT ANSWER: C. NPO with IV fluids
Rationale: During the acute phase of pancreatitis, the pancreas must be "rested" to
decrease stimulation of pancreatic enzyme secretion. NPO status with IV fluid
replacement prevents further stimulation of the pancreas by food, allowing inflammation
to subside. Oral intake is gradually reintroduced once the patient's pain decreases and
bowel sounds return.
Question 6: When reinforcing teaching about the use of a metered-dose inhaler
(MDI), the LVN should emphasize which sequence of steps?
A. Shake the inhaler, exhale completely, place mouthpiece in mouth, inhale slowly while
actuating, and hold breath for 10 seconds
B. Exhale completely, shake the inhaler, place mouthpiece in mouth, inhale rapidly while
actuating, and hold breath for 5 seconds
C. Place mouthpiece in mouth, inhale slowly, actuate inhaler, and exhale immediately
,D. Shake the inhaler, inhale quickly, actuate, and exhale slowly through pursed lips
CORRECT ANSWER: A. Shake the inhaler, exhale completely, place mouthpiece
in mouth, inhale slowly while actuating, and hold breath for 10 seconds
Rationale: Proper MDI technique involves shaking the inhaler to mix the medication,
exhaling fully to empty the lungs, placing the mouthpiece in the mouth, beginning a slow
inhalation, actuating the inhaler once, and holding the breath for approximately 10
seconds to allow maximum deposition of medication in the airways.
Question 7: A patient receiving a blood transfusion develops chills, low back
pain, and a temperature of 101.8°F. The LVN should first:
A. Slow the transfusion rate and monitor vital signs
B. Stop the transfusion immediately and notify the RN
C. Administer diphenhydramine as prescribed
D. Obtain a urine specimen for hemoglobin analysis
CORRECT ANSWER: B. Stop the transfusion immediately and notify the RN
Rationale: These are classic signs of an acute hemolytic transfusion reaction, a life-
threatening emergency. The priority action is to stop the transfusion immediately,
disconnect the blood tubing, and notify the registered nurse and healthcare provider.
The blood bag and tubing must be returned to the blood bank for testing.
Question 8: The LVN is reinforcing instructions for a patient who will be
wearing a transdermal nitroglycerin patch. Which statement indicates correct
understanding of the teaching?
A. "I will apply the patch to the same spot every day."
B. "I will remove the patch at bedtime and apply a new one in the morning."
C. "I can cover the patch with a heating pad if it gets cold."
D. "I can cut the patch in half if I feel my chest pain is not severe."
CORRECT ANSWER: B. "I will remove the patch at bedtime and apply a new
one in the morning."
Rationale: Transdermal nitroglycerin patches should be applied for 12-14 hours and
removed for 10-12 hours overnight to prevent the development of tolerance. Rotating
application sites prevents skin irritation. Heating pads should not be used as they
increase medication absorption. Patches should never be cut.
Question 9: A patient with tuberculosis is prescribed a regimen of isoniazid,
rifampin, pyrazinamide, and ethambutol. The LVN should reinforce that the
patient needs to be monitored for which potential side effect of isoniazid?
A. Orange-colored body fluids
B. Peripheral neuropathy
C. Decreased visual acuity
D. Hyperuricemia and gout
CORRECT ANSWER: B. Peripheral neuropathy
Rationale: Isoniazid (INH) can cause peripheral neuropathy due to induced pyridoxine
(vitamin B6) deficiency. Patients should be advised to report symptoms like tingling,
burning, or numbness in the hands and feet. Pyridoxine supplementation is often
, prescribed concurrently. Orange-colored body fluids are associated with rifampin, visual
changes with ethambutol, and hyperuricemia with pyrazinamide.
Question 10: In the immediate post-operative period following a
thyroidectomy, which item should the LVN ensure is placed at the patient's
bedside?
A. A suture removal kit
B. A padded tongue blade
C. A tracheostomy tray
D. An ECG monitor
CORRECT ANSWER: C. A tracheostomy tray
Rationale: Following a thyroidectomy, there is a risk of laryngeal edema and
respiratory compromise, particularly if there is hemorrhage or nerve damage. A
tracheostomy tray should be immediately available at the bedside in case of severe
respiratory distress or airway obstruction. This is a standard safety precaution.
Question 11: A patient with diabetes mellitus type 2 is taking metformin. The
LVN should reinforce that the patient should report which symptom to the
healthcare provider immediately?
A. Mild nausea after meals
B. Weight loss of 2 pounds over 2 months
C. Muscle pain and weakness
D. Occasional headaches
CORRECT ANSWER: C. Muscle pain and weakness
Rationale: Muscle pain and weakness, especially with malaise, fever, or abdominal
symptoms, can indicate lactic acidosis, a rare but serious side effect of metformin. Lactic
acidosis is a medical emergency. Mild nausea is a common transient side effect that
often resolves with time or taking the medication with food.
Question 12: The LVN is assisting with the care of a patient receiving IV
heparin for a pulmonary embolism. The patient's aPTT is 120 seconds. The
nurse should anticipate which action?
A. Increasing the heparin infusion rate
B. Continuing the current infusion rate
C. Notifying the RN to hold the infusion
D. Administering protamine sulfate as prescribed
CORRECT ANSWER: C. Notifying the RN to hold the infusion
Rationale: The therapeutic range for aPTT while on heparin is typically 1.5 to 2.5 times
the normal control value. A normal aPTT is approximately 30-40 seconds. An aPTT of
120 seconds is significantly elevated and indicates a high risk for bleeding. The infusion
should be held, and the RN must be notified to adjust the rate per protocol. Protamine
sulfate is the antidote for heparin overdose, but the first step is to hold the infusion.
Question 13: A patient who is 2 days post-operative following an
appendectomy has an order for an incentive spirometer. The LVN instructs the
patient on its use. What is the primary goal of this intervention?
(California & Texas) Comprehensive
Certification & Licensing Review | 200+
Practice Questions & Verified Answers |
Ultimate LVN & NCLEX-PN Exam Prep
Study Guide, Nursing Fundamentals,
Pharmacology, Medical-Surgical Nursing,
Patient Assessment, Infection Control,
Maternal-Newborn Care, Pediatrics, Mental
Health, Clinical Skills, Patient Safety,
Detailed Rationales
Question 1: A patient with a history of myasthenia gravis is admitted with
severe muscle weakness and respiratory distress. The nurse notes that the
patient's last dose of pyridostigmine was administered 2 hours ago. Which
assessment finding would indicate a cholinergic crisis rather than a
myasthenic crisis?
A. Increased muscle strength after administration of edrophonium
B. Pupillary miosis and excessive salivation
C. Absent deep tendon reflexes and ptosis
D. Heart rate of 110 beats per minute and dry mucous membranes
CORRECT ANSWER: B. Pupillary miosis and excessive salivation
Rationale: Cholinergic crisis results from excessive acetylcholinesterase inhibitor
medication, leading to overstimulation of muscarinic receptors. Classic signs include
miosis (pinpoint pupils), bradycardia, excessive salivation, lacrimation, sweating, and
gastrointestinal cramping. Myasthenic crisis is due to undertreatment and would show
improvement with edrophonium (Tensilon test), while cholinergic crisis would worsen.
Question 2: A LVN is caring for a post-operative patient following a total hip
arthroplasty. Which finding requires immediate notification of the registered
nurse and healthcare provider?
A. Pain level of 4 on a 0-10 scale at the surgical site
B. Urinary output of 40 mL per hour via indwelling catheter
C. Swelling and pain in the ipsilateral calf that is warm to the touch
D. Oxygen saturation of 95% on room air
CORRECT ANSWER: C. Swelling and pain in the ipsilateral calf that is warm to
the touch
Rationale: These findings are classic signs of a deep vein thrombosis (DVT), a serious
postoperative complication that can lead to pulmonary embolism. DVT prophylaxis and
early detection are critical in hip arthroplasty patients. The other findings are within
acceptable parameters or expected postoperative findings.
Question 3: A patient is prescribed digoxin for heart failure. Which laboratory
value would place the patient at the highest risk for digoxin toxicity?
,A. Serum potassium of 3.0 mEq/L
B. Serum sodium of 142 mEq/L
C. Serum calcium of 9.2 mg/dL
D. Serum magnesium of 2.5 mEq/L
CORRECT ANSWER: A. Serum potassium of 3.0 mEq/L
Rationale: Hypokalemia (potassium < 3.5 mEq/L) increases the risk of digoxin toxicity
because digoxin competes with potassium for binding sites on the sodium-potassium
ATPase pump. Low potassium levels potentiate digoxin's effects, leading to
dysrhythmias. Normal sodium, calcium, and magnesium levels do not carry the same
heightened risk for digoxin toxicity.
Question 4: The LVN is reinforcing dietary teaching for a patient with chronic
kidney disease who is on a protein-restricted diet. Which food choice by the
patient indicates a need for further teaching?
A. A small apple
B. A slice of white bread
C. A 4-ounce grilled chicken breast
D. A half cup of white rice
CORRECT ANSWER: C. A 4-ounce grilled chicken breast
Rationale: Patients with chronic kidney disease on protein restriction are typically
limited to 0.6-0.8 g/kg of protein per day. High-protein animal sources like chicken
breast are restricted. The apple, white bread, and white rice are primarily carbohydrates
and are more appropriate for this diet, though portion sizes for carbohydrates may also
need to be managed depending on the presence of diabetes.
Question 5: A patient is admitted with a diagnosis of acute pancreatitis. Which
dietary prescription is most appropriate during the acute phase of this
condition?
A. Clear liquid diet with high protein supplements
B. Low-fat, high-carbohydrate diet
C. NPO with IV fluids
D. Soft, bland diet with six small feedings
CORRECT ANSWER: C. NPO with IV fluids
Rationale: During the acute phase of pancreatitis, the pancreas must be "rested" to
decrease stimulation of pancreatic enzyme secretion. NPO status with IV fluid
replacement prevents further stimulation of the pancreas by food, allowing inflammation
to subside. Oral intake is gradually reintroduced once the patient's pain decreases and
bowel sounds return.
Question 6: When reinforcing teaching about the use of a metered-dose inhaler
(MDI), the LVN should emphasize which sequence of steps?
A. Shake the inhaler, exhale completely, place mouthpiece in mouth, inhale slowly while
actuating, and hold breath for 10 seconds
B. Exhale completely, shake the inhaler, place mouthpiece in mouth, inhale rapidly while
actuating, and hold breath for 5 seconds
C. Place mouthpiece in mouth, inhale slowly, actuate inhaler, and exhale immediately
,D. Shake the inhaler, inhale quickly, actuate, and exhale slowly through pursed lips
CORRECT ANSWER: A. Shake the inhaler, exhale completely, place mouthpiece
in mouth, inhale slowly while actuating, and hold breath for 10 seconds
Rationale: Proper MDI technique involves shaking the inhaler to mix the medication,
exhaling fully to empty the lungs, placing the mouthpiece in the mouth, beginning a slow
inhalation, actuating the inhaler once, and holding the breath for approximately 10
seconds to allow maximum deposition of medication in the airways.
Question 7: A patient receiving a blood transfusion develops chills, low back
pain, and a temperature of 101.8°F. The LVN should first:
A. Slow the transfusion rate and monitor vital signs
B. Stop the transfusion immediately and notify the RN
C. Administer diphenhydramine as prescribed
D. Obtain a urine specimen for hemoglobin analysis
CORRECT ANSWER: B. Stop the transfusion immediately and notify the RN
Rationale: These are classic signs of an acute hemolytic transfusion reaction, a life-
threatening emergency. The priority action is to stop the transfusion immediately,
disconnect the blood tubing, and notify the registered nurse and healthcare provider.
The blood bag and tubing must be returned to the blood bank for testing.
Question 8: The LVN is reinforcing instructions for a patient who will be
wearing a transdermal nitroglycerin patch. Which statement indicates correct
understanding of the teaching?
A. "I will apply the patch to the same spot every day."
B. "I will remove the patch at bedtime and apply a new one in the morning."
C. "I can cover the patch with a heating pad if it gets cold."
D. "I can cut the patch in half if I feel my chest pain is not severe."
CORRECT ANSWER: B. "I will remove the patch at bedtime and apply a new
one in the morning."
Rationale: Transdermal nitroglycerin patches should be applied for 12-14 hours and
removed for 10-12 hours overnight to prevent the development of tolerance. Rotating
application sites prevents skin irritation. Heating pads should not be used as they
increase medication absorption. Patches should never be cut.
Question 9: A patient with tuberculosis is prescribed a regimen of isoniazid,
rifampin, pyrazinamide, and ethambutol. The LVN should reinforce that the
patient needs to be monitored for which potential side effect of isoniazid?
A. Orange-colored body fluids
B. Peripheral neuropathy
C. Decreased visual acuity
D. Hyperuricemia and gout
CORRECT ANSWER: B. Peripheral neuropathy
Rationale: Isoniazid (INH) can cause peripheral neuropathy due to induced pyridoxine
(vitamin B6) deficiency. Patients should be advised to report symptoms like tingling,
burning, or numbness in the hands and feet. Pyridoxine supplementation is often
, prescribed concurrently. Orange-colored body fluids are associated with rifampin, visual
changes with ethambutol, and hyperuricemia with pyrazinamide.
Question 10: In the immediate post-operative period following a
thyroidectomy, which item should the LVN ensure is placed at the patient's
bedside?
A. A suture removal kit
B. A padded tongue blade
C. A tracheostomy tray
D. An ECG monitor
CORRECT ANSWER: C. A tracheostomy tray
Rationale: Following a thyroidectomy, there is a risk of laryngeal edema and
respiratory compromise, particularly if there is hemorrhage or nerve damage. A
tracheostomy tray should be immediately available at the bedside in case of severe
respiratory distress or airway obstruction. This is a standard safety precaution.
Question 11: A patient with diabetes mellitus type 2 is taking metformin. The
LVN should reinforce that the patient should report which symptom to the
healthcare provider immediately?
A. Mild nausea after meals
B. Weight loss of 2 pounds over 2 months
C. Muscle pain and weakness
D. Occasional headaches
CORRECT ANSWER: C. Muscle pain and weakness
Rationale: Muscle pain and weakness, especially with malaise, fever, or abdominal
symptoms, can indicate lactic acidosis, a rare but serious side effect of metformin. Lactic
acidosis is a medical emergency. Mild nausea is a common transient side effect that
often resolves with time or taking the medication with food.
Question 12: The LVN is assisting with the care of a patient receiving IV
heparin for a pulmonary embolism. The patient's aPTT is 120 seconds. The
nurse should anticipate which action?
A. Increasing the heparin infusion rate
B. Continuing the current infusion rate
C. Notifying the RN to hold the infusion
D. Administering protamine sulfate as prescribed
CORRECT ANSWER: C. Notifying the RN to hold the infusion
Rationale: The therapeutic range for aPTT while on heparin is typically 1.5 to 2.5 times
the normal control value. A normal aPTT is approximately 30-40 seconds. An aPTT of
120 seconds is significantly elevated and indicates a high risk for bleeding. The infusion
should be held, and the RN must be notified to adjust the rate per protocol. Protamine
sulfate is the antidote for heparin overdose, but the first step is to hold the infusion.
Question 13: A patient who is 2 days post-operative following an
appendectomy has an order for an incentive spirometer. The LVN instructs the
patient on its use. What is the primary goal of this intervention?
