Heart Failure Drugs Flashcards
A patient about to receive a morning dose of digoxin has an apical pulse of 50 beats/min.
What will the nurse do next?
a. Administer the dose.
b. Administer the dose, and notify the prescriber.
c. Check the radial pulse for 1 full minute.
d. Withhold the dose, and notify the prescriber.
ANS: D
Digoxin doses are held and the prescriber notified if the apical pulse is 60 beats/min or lower or is higher than 100 beats/min. The other options are incorrect.
A patient is taking digoxin and a loop diuretic daily. When the nurse enters the room with the morning medications, the patient states, ―I am seeing a funny yellow color around the lights.‖ What is the nurse‘s next action?
a. Assess the patient for symptoms of digoxin toxicity.
b. Withhold the next dose of the diuretic.
c. Administer the digoxin and diuretic together as ordered.
d. Document this finding, and reassess in 1 hour.
ANS: A
Seeing colors around lights is one potential indication of developing digoxin toxicity. If a patient indicates these visual problems, the nurse needs to assess for other signs and symptoms of digoxin toxicity including bradycardia, headache, dizziness, confusion, nausea, and blurred vision, and then notify the prescriber. Administering the drug or withholding the diuretic are incorrect options.
While assessing a patient who is receiving intravenous digitalis, the nurse recognizes that the drug has a negative chronotropic effect. How would this drug effect be evident in the patient?
a. Decreased blood pressure
b. Decreased heart rate
c. Decreased conduction
d. Decreased ectopic beats
ANS: B
A negative chronotropic effect results in a decreased heart rate; this is one effect of cardiac glycosides. The other options are incorrect.
A patient has been taking digoxin at home but took an accidental overdose and has developed toxicity. The patient has been admitted to the telemetry unit, where the physician has ordered digoxin immune Fab. The patient asks the nurse why the medication is ordered. What is the nurse‘s best response?
a. ―It will increase your heart rate.‖
b. ―This drug helps to lower your potassium levels.‖c. ―It causes your heart to beat at a slower rate.‖
d. ―This drug is an antidote to digoxin and will help your heart to return to normal functioning.‖
ANS: D
Digoxin immune Fab (Digifab) is the antidote for a severe digoxin overdose and is given to reverse the life-threatening cardiotoxic effects. The other options are incorrect.
A patient has been placed on a milrinone infusion as part of the therapy for end-stage heart failure. What adverse effect of this drug will the nurse watch for when assessing this patient during the infusion?
a. Hypertension
b. Hyperkalemia
c. Nausea and vomiting
d. Cardiac dysrhythmias
ANS: D
The primary adverse effects seen with milrinone are cardiac dysrhythmias, mainly ventricular. It may also cause hypotension, hypokalemia, and other effects, but not nausea and vomiting.
A patient has a digoxin level of 1.1 ng/mL. Which interpretation by the nurse is correct? a. It is below the therapeutic level.b. It is within the therapeutic range.
c. It is above the therapeutic level.
d. It is at a toxic level.
ANS: B
The normal therapeutic drug level of digoxin is between 0.5 and 2 ng/mL. The other options are incorrect.
The nurse is reviewing discharge teaching for a patient who will be taking digoxin therapy. The nurse will teach the patient to avoid which foods when taking the digoxin?
a. Leafy green vegetables
b. Dairy products
c. Grapefruit juice
d. Bran muffins
ANS: D
Bran, in large amounts, may decrease the absorption of oral digitalis drugs. The other foods do not affect digoxin levels.
In assessing a patient before administration of a cardiac glycoside, the nurse knows that which lab result can increase the toxicity of the drug?
a. Potassium level 2.8 mEq/Lb. Potassium level 4.9 mEq/L
c. Sodium level 140 mEq/L
d. Calcium level 10 mg/dL
ANS: A
Hypokalemia increases the chance of digitalis toxicity. The other levels listed are incorrect.
The nurse administering the phosphodiesterase inhibitor milrinone recognizes that this drug will have a positive inotropic effect. Which result reflects this effect?
a. Increased heart rate
b. Increased blood vessel dilation
c. Increased force of cardiac contractions
d. Increased conduction of electrical impulses across the heart
ANS: C
Positive inotropic drugs increase myocardial contractility, thus increasing the force of cardiac conduction. Positive chronotropic drugs increase the heart rate. Positive dromotropic drugs increase the conduction of electrical impulses across the heart. Blood vessel dilation is not affected.
The nurse notes in a patient‘s medical record that ivabradine has been ordered. Based on this order, the nurse interprets that the patient has which disorder?a. Heart failure with atrial fibrillation
b. Early stages of heart failure
c. Stable, symptomatic heart failure with an ejection fraction of 35% or less
d. Unstable heart failure with an ejection fraction of less than 15%
ANS: C
Ivabradine is indicated for the treatment of stable, symptomatic heart failure with an ejection fraction of 35% or less. A potential adverse effect is atrial fibrillation. The other options are not indications for ivabradine.
When administering digoxin immune Fab to a patient with severe digoxin toxicity, the nurse knows that each vial can bind with how much digoxin?
a. 0.5 mg
b. 5 mg
c. 15 mg
d. 25 mg
ANS: A
One vial of digoxin immune Fab binds 0.5 mg of digoxin. The other options are incorrect.
A patient is in the intensive care unit and receiving an infusion of milrinone for severe heart failure. The prescriber has written an order for an intravenous dose of furosemide. How will the nurse give this drug?
a. Infuse the drug into the same intravenous line as the milrinone.
b. Stop the milrinone, flush the line, and then administer the furosemide.
c. Administer the furosemide in a separate intravenous line.
d. Notify the prescriber that the furosemide cannot be given at this time.
ANS: C
Furosemide must not be injected into an intravenous line with milrinone because it will precipitate immediately. The infusion must not be stopped because of the patient‘s condition. A separate line will be needed. The other options are incorrect.
When a patient is experiencing digoxin toxicity, which clinical situation would necessitate the use of digoxin immune Fab? (Select all that apply.)
a. The patient reports seeing colorful halos around lights.
b. The patient‘s serum potassium level is above 5 mEq/L.
c. The patient is experiencing nausea and anorexia.
d. The patient is experiencing severe sinus bradycardia that does not respond to cardiac pacing.
e. The patient has received an overdose of greater than 10 mg of digoxin.
f. The patient reports fatigue and headaches.
ANS: B, D, E
Clinical situations that would require the use of digoxin immune Fab in a patient with digoxin toxicity include serum potassium level above 5 mEq/L, severe sinus bradycardia that does not respond to cardiac pacing, or an overdose of more than 10 mg of digoxin. Seeing colorful halos around lights and experiencing nausea, anorexia, fatigue, and headaches are potential adverse effects of digoxin therapy but are not necessarily reasons for digoxin immune Fab treatment.
Which drug classes are considered first-line treatment for heart failure? (Select all that apply.)
a. Angiotensin-converting enzyme (ACE) inhibitors
b. Angiotensin II receptor blockers (ARBs)
c. Digoxin, a cardiac glycoside
d. Beta-blockers
e. Nesiritide, the B-type natriuretic peptide
ANS: A, B, D
ACE inhibitors, ARBs, and certain beta blockers are now considered the first-line treatments for heart failure. Digoxin is used when the first-line treatments are not successful; nesiritide is considered a last-resort treatment.
