CERTIFICATION EVALUATION TEST PAPER 2026
COMPLETE STUDY QUESTIONS WITH
CORRECT ANSWERS
◉ A nurse prepares to administer a scheduled dose of digoxin. The
nurse finds a new laboratory report showing a plasma digoxin level
of 0.7 ng/mL. What action should the nurse take?
a.Withhold the drug for an hour and reassess the level.
b.Withhold the drug and notify the prescriber immediately.
c.Administer Digibind to counteract the toxicity.
d.Check the patient's apical pulse, and if it is within a safe range,
administer the digoxin. Answer: d.Check the patient's apical pulse,
and if it is within a safe range, administer the digoxin.
◉ A man asks a nurse why he cannot use digoxin (Lanoxin) for his
heart failure, because both of his parents used it for HF. The nurse
will explain that digoxin is not first-line therapy for which reason?
a.It causes tachycardia and increases the cardiac workload.
b.It does not correct the underlying pathology of heart failure.
c.It has a wide therapeutic range that makes dosing difficult.
,d.It may actually shorten the patient's life expectancy. Answer: b.It
does not correct the underlying pathology of heart failure.
◉ A nurse is preparing to administer digoxin (Lanoxin) to a patient.
The patient's heart rate is 62 beats per minute, and the blood
pressure is 120/60 mm Hg. The last serum electrolyte value showed
a potassium level of 5.2 mEq/L. What will the nurse do?
a.Contact the provider to request an increased dose of digoxin.
b.Give the dose of digoxin and notify the provider of the potassium
level.
c.Request an order for a diuretic.
d.Withhold the dose and notify the provider of the heart rate.
Answer: b.Give the dose of digoxin and notify the provider of the
potassium level.
◉ A patient with heart failure who has been given digoxin (Lanoxin)
daily for a week complains of nausea. Before giving the next dose,
the nurse will:
a.assess the heart rate (HR) and give the dose if the HR is greater
than 60 beats per minute.
b.contact the provider to report digoxin toxicity.
c.request an order for a decreased dose of digoxin.
,d.review the serum electrolyte values and withhold the dose if the
potassium level is greater than 3.5 mEq/L. Answer: a.assess the
heart rate (HR) and give the dose if the HR is greater than 60 beats
per minute.
◉ A patient is taking a thiazide diuretic for hypertension and
quinidine to treat a dysrhythmia. The prescriber orders digoxin
0.125 mg to improve this patient's cardiac output. The nurse should
contact the provider to request:
a.adding spironolactone (Aldactone).
b.reducing the dose of digoxin.
c.discontinuing the quinidine.
d.giving potassium supplements. Answer: c.discontinuing the
quinidine.
◉ A patient with heart failure who takes a thiazide diuretic and
digoxin (Lanoxin) is admitted for shortness of breath. The patient's
heart rate is 66 beats per minute, and the blood pressure is 130/88
mm Hg. The serum potassium level is 3.8 mEq/L, and the digoxin
level is 0.8 ng/mL. The nurse admitting this patient understands
that the patient:
a.has digoxin toxicity.
b.is showing signs of renal failure.
, c.is experiencing worsening of the disease.
d.needs a potassium-sparing diuretic. Answer: c.is experiencing
worsening of the disease.
◉ A patient has been taking digoxin (Lanoxin) 0.25 mg, and
furosemide (Lasix) 40 mg, daily. Upon routine assessment by the
nurse, the patient states, "I see yellow halos around the lights." The
nurse should perform which action based on this assessment?
a.Check the patient for other symptoms of digitalis toxicity.
b.Withhold the next dose of furosemide.
c.Continue to monitor the patient for heart failure.
d.Document the findings and reassess in 1 hour. Answer: a.Check the
patient for other symptoms of digitalis toxicity.
◉ A nurse is providing teaching for a patient with stable angina who
will begin taking nitroglycerin. Which statement by the patient
indicates understanding of the teaching?
a."I should not participate in aerobic exercise while taking this drug."
b."I should take aspirin daily to reduce my need for nitroglycerin."
c."If I take nitroglycerin before exertion, I can reduce the chance of
an anginal attack."