PN HESI PHARMACOLOGY EXAM 2026
150 MASTER CLINICAL SCENARIOS WITH
CORRECT VERIFIED ANSWERS AND
HIGHLY DETAILED RATIONALES GRADE
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PN HESI Pharmacology Examination
1. A licensed practical nurse (LPN) is preparing to
administer a scheduled dose of digoxin to a patient
diagnosed with chronic heart failure. Which of the
following clinical actions is an absolute safety prerequisite
prior to administering this medication?
A) Measure the patient's oxygen saturation level via pulse
oximetry.
B) Assess the patient's apical pulse rate for one full
minute.
C) Palpate the patient's bilateral pedal pulses for standard
warmth.
D) Obtain a baseline blood pressure reading while the
patient is supine.
Correct Answer: B
Rationale: Digoxin is a cardiac glycoside that exerts a
negative chronotropic effect, slowing the heart rate. The
nurse must assess the apical pulse for one full minute
before administration; the dose must be withheld and the
healthcare provider notified if the adult patient's heart
rate is less than 60 beats per minute (or less than 90
beats per minute in an infant) to prevent severe
bradycardia.
,2. A nurse is reviewing a patient's laboratory results and
notes a serum potassium level of 2.8 mEq/L. The patient
is scheduled to receive a morning dose of furosemide.
What is the most appropriate action for the nurse to
execute?
A) Administer the furosemide as scheduled and document
the potassium value.
B) Withhold the furosemide dose and immediately notify
the healthcare provider.
C) Encourage the patient to consume a cup of water with
the medication.
D) Administer double the dose of furosemide to correct
fluid retention.
Correct Answer: B
Rationale: Furosemide is a potent loop diuretic that
causes the excretion of water, sodium, and potassium.
The patient's potassium level is dangerously low
(hypokalemia is defined as potassium <3.5 mEq/L).
Administering furosemide in this state would further
deplete potassium levels, increasing the risk of fatal
cardiac arrhythmias.
3. A patient is prescribed a new course of sublingual
nitroglycerin tablets for the management of stable angina
pectoris. Which instruction must the nurse include during
patient discharge teaching?
A) Swallow the tablet whole with a full 8-ounce glass of
warm water.
B) Place the tablet under the tongue and allow it to
dissolve completely when chest pain occurs.
C) Chew the tablet thoroughly before swallowing to
accelerate absorption.
D) Take the medication every morning before eating
breakfast to prevent pain.
Correct Answer: B
, Rationale: Sublingual nitroglycerin must be placed
under the tongue to bypass the hepatic first-pass
metabolism and achieve rapid absorption through the
oral mucosa. Swallowing or chewing the medication
significantly reduces its therapeutic efficacy and delays
its onset of action.
4. A nurse is caring for a patient who is receiving a
continuous intravenous infusion of heparin for a deep vein
thrombosis (DVT). Which of the following laboratory
parameters must the nurse monitor closely to evaluate the
therapeutic efficacy and safety of this drug?
A) Prothrombin Time (PT)
B) International Normalized Ratio (INR)
C) Activated Partial Thromboplastin Time (aPTT)
=D) Glycated Hemoglobin (HbA1c)
Correct Answer: C
Rationale: Unfractionated heparin infusions are
monitored using the activated partial thromboplastin
time (aPTT) to adjust dosing and maintain a safe
therapeutic range. PT and INR are used primarily to
monitor oral warfarin therapy, not intravenous heparin.
5. A healthcare provider prescribes 250 mg of an oral
antibiotic suspension. The medication label reads "125 mg
per 5 mL." How many milliliters (mL) should the practical
nurse prepare to administer?
A) 2.5 mL
B) 5.0 mL
C) 7.5 mL
D) 10.0 mL
Correct Answer: B
Rationale: Use the standard dosage calculation formula:
(Desired / Have) × Volume = Amount to administer.
Substituting the parameters into the equation: (250 mg /
125 mg) × 5 mL = 2 × 5 mL = 10 mL.
, 6. Consider two types of insulin configurations. Type 1:
Insulin Lispro (rapid-acting). Type 2: Insulin NPH
(intermediate-acting). If a patient is scheduled to receive
both insulins at 0730 before breakfast, which clinical
instruction governs the safe mixing of these insulins in a
single syringe?
A) Draw up the NPH insulin first, followed by the Lispro
insulin.
B) Draw up the Lispro insulin first, followed by the NPH
insulin.
C) Insulins Lispro and NPH cannot be mixed under any
circumstances.
D) Mix the insulins together in a small medicine cup
before drawing them up.
Correct Answer: B
Rationale: When mixing regular or rapid-acting insulin
(clear) with intermediate-acting insulin (cloudy, like
NPH), the clear insulin (Lispro) must always be drawn
into the syringe first to prevent contaminating the rapid-
acting vial with the intermediate-acting modifying
proteins.
7. A patient who is taking oral warfarin therapy for atrial
fibrillation arrives at the clinic for a routine evaluation.
The nurse notes that the patient's International
Normalized Ratio (INR) value is 5.5. What clinical
manifestation should the nurse assess for immediately?
A) Signs of active or occult bleeding, such as hematuria,
ecchymosis, or epistaxis
B) Increased localized warmth and swelling in the calf
muscles
C) Acute short-term memory loss and disorientation
D) High-pitched respiratory wheezing during expiration
Correct Answer: A
Rationale: The target therapeutic INR range for a
150 MASTER CLINICAL SCENARIOS WITH
CORRECT VERIFIED ANSWERS AND
HIGHLY DETAILED RATIONALES GRADE
A+ BLUEPRINT | 100% PASS GUARANTEE
[INSTANT DOWNLOAD]
PN HESI Pharmacology Examination
1. A licensed practical nurse (LPN) is preparing to
administer a scheduled dose of digoxin to a patient
diagnosed with chronic heart failure. Which of the
following clinical actions is an absolute safety prerequisite
prior to administering this medication?
A) Measure the patient's oxygen saturation level via pulse
oximetry.
B) Assess the patient's apical pulse rate for one full
minute.
C) Palpate the patient's bilateral pedal pulses for standard
warmth.
D) Obtain a baseline blood pressure reading while the
patient is supine.
Correct Answer: B
Rationale: Digoxin is a cardiac glycoside that exerts a
negative chronotropic effect, slowing the heart rate. The
nurse must assess the apical pulse for one full minute
before administration; the dose must be withheld and the
healthcare provider notified if the adult patient's heart
rate is less than 60 beats per minute (or less than 90
beats per minute in an infant) to prevent severe
bradycardia.
,2. A nurse is reviewing a patient's laboratory results and
notes a serum potassium level of 2.8 mEq/L. The patient
is scheduled to receive a morning dose of furosemide.
What is the most appropriate action for the nurse to
execute?
A) Administer the furosemide as scheduled and document
the potassium value.
B) Withhold the furosemide dose and immediately notify
the healthcare provider.
C) Encourage the patient to consume a cup of water with
the medication.
D) Administer double the dose of furosemide to correct
fluid retention.
Correct Answer: B
Rationale: Furosemide is a potent loop diuretic that
causes the excretion of water, sodium, and potassium.
The patient's potassium level is dangerously low
(hypokalemia is defined as potassium <3.5 mEq/L).
Administering furosemide in this state would further
deplete potassium levels, increasing the risk of fatal
cardiac arrhythmias.
3. A patient is prescribed a new course of sublingual
nitroglycerin tablets for the management of stable angina
pectoris. Which instruction must the nurse include during
patient discharge teaching?
A) Swallow the tablet whole with a full 8-ounce glass of
warm water.
B) Place the tablet under the tongue and allow it to
dissolve completely when chest pain occurs.
C) Chew the tablet thoroughly before swallowing to
accelerate absorption.
D) Take the medication every morning before eating
breakfast to prevent pain.
Correct Answer: B
, Rationale: Sublingual nitroglycerin must be placed
under the tongue to bypass the hepatic first-pass
metabolism and achieve rapid absorption through the
oral mucosa. Swallowing or chewing the medication
significantly reduces its therapeutic efficacy and delays
its onset of action.
4. A nurse is caring for a patient who is receiving a
continuous intravenous infusion of heparin for a deep vein
thrombosis (DVT). Which of the following laboratory
parameters must the nurse monitor closely to evaluate the
therapeutic efficacy and safety of this drug?
A) Prothrombin Time (PT)
B) International Normalized Ratio (INR)
C) Activated Partial Thromboplastin Time (aPTT)
=D) Glycated Hemoglobin (HbA1c)
Correct Answer: C
Rationale: Unfractionated heparin infusions are
monitored using the activated partial thromboplastin
time (aPTT) to adjust dosing and maintain a safe
therapeutic range. PT and INR are used primarily to
monitor oral warfarin therapy, not intravenous heparin.
5. A healthcare provider prescribes 250 mg of an oral
antibiotic suspension. The medication label reads "125 mg
per 5 mL." How many milliliters (mL) should the practical
nurse prepare to administer?
A) 2.5 mL
B) 5.0 mL
C) 7.5 mL
D) 10.0 mL
Correct Answer: B
Rationale: Use the standard dosage calculation formula:
(Desired / Have) × Volume = Amount to administer.
Substituting the parameters into the equation: (250 mg /
125 mg) × 5 mL = 2 × 5 mL = 10 mL.
, 6. Consider two types of insulin configurations. Type 1:
Insulin Lispro (rapid-acting). Type 2: Insulin NPH
(intermediate-acting). If a patient is scheduled to receive
both insulins at 0730 before breakfast, which clinical
instruction governs the safe mixing of these insulins in a
single syringe?
A) Draw up the NPH insulin first, followed by the Lispro
insulin.
B) Draw up the Lispro insulin first, followed by the NPH
insulin.
C) Insulins Lispro and NPH cannot be mixed under any
circumstances.
D) Mix the insulins together in a small medicine cup
before drawing them up.
Correct Answer: B
Rationale: When mixing regular or rapid-acting insulin
(clear) with intermediate-acting insulin (cloudy, like
NPH), the clear insulin (Lispro) must always be drawn
into the syringe first to prevent contaminating the rapid-
acting vial with the intermediate-acting modifying
proteins.
7. A patient who is taking oral warfarin therapy for atrial
fibrillation arrives at the clinic for a routine evaluation.
The nurse notes that the patient's International
Normalized Ratio (INR) value is 5.5. What clinical
manifestation should the nurse assess for immediately?
A) Signs of active or occult bleeding, such as hematuria,
ecchymosis, or epistaxis
B) Increased localized warmth and swelling in the calf
muscles
C) Acute short-term memory loss and disorientation
D) High-pitched respiratory wheezing during expiration
Correct Answer: A
Rationale: The target therapeutic INR range for a
