Which electrolyte deficiency, in addition to low potassium, can predispose a patient taking digoxin to toxicity?
5 Cardiac Glycosides Online Quiz Questions
Use this free practice quiz with 20 questions to review 5 Cardiac Glycosides, test your knowledge, and prepare for your next test or exam.
Digoxin’s makes assessment of treatment response and safety important.
True or false: Low potassium can increase the heart’s sensitivity to digoxin and raise the risk of toxicity.
- A
True
- B
False
Digoxin toxicity can occur even when a measured level is not above what value? Enter the value in ng/mL.
When digoxin is combined with a beta blocker, additive slowing of AV-node conduction can cause bradycardia or .
A patient with chronic atrial fibrillation is prescribed digoxin. Which effect is the main reason it may help control the ventricular rate?
- A
It converts atrial fibrillation to a normal rhythm.
- B
It slows conduction through the AV node, helping control the ventricular rate.
- C
It prevents blood clots from forming.
- D
It reliably reduces mortality in heart failure.
An older adult taking digoxin develops worsening kidney function. What is the key safety concern?
- A
Reduced kidney clearance can cause digoxin to accumulate and increase toxicity risk.
- B
Digoxin is cleared only by the lungs, so kidney function is irrelevant.
- C
Worsening kidney function always lowers the digoxin level.
- D
Kidney function matters only when the patient has visual symptoms.
A clinician orders a digoxin blood level. When should the sample generally be collected to avoid an early, potentially misleading result?
- A
Immediately after the dose.
- B
At least 6 hours after the last dose, or just before the next dose.
- C
Only after a meal.
- D
Timing does not affect the result.
A patient taking digoxin is prescribed amiodarone. What is the most important monitoring concern?
- A
Amiodarone may increase digoxin concentrations, so the prescriber may need to adjust the digoxin dose and monitor levels.
- B
Amiodarone always makes digoxin ineffective.
- C
There is no interaction to consider.
- D
Digoxin should automatically be doubled.
A patient taking digoxin is being assessed for possible toxicity. Which findings described here can be signs of toxicity? Select all that apply.
- A
Nausea
- B
Poor appetite
- C
Yellow-tinted vision
- D
An unusually slow pulse
- E
Increased appetite
- F
Improved vision
For adults with heart failure, which outcomes are described as possible benefits of digoxin? Select all that apply.
- A
Improvement in heart-failure symptoms
- B
Fewer heart-failure-related hospitalizations
- C
Reliable reduction in mortality
- D
Conversion of atrial fibrillation to a normal rhythm
True or false: A patient taking digoxin and a potassium-wasting diuretic may have increased digoxin toxicity risk if the diuretic lowers potassium.
- A
True
- B
False
True or false: Digoxin has been shown to reliably reduce mortality in adults with heart failure.
- A
True
- B
False
A patient taking digoxin and a loop diuretic has low potassium, nausea, poor appetite, yellow-tinted vision, and an unusually slow pulse. What is the most appropriate interpretation and response, and why does the low potassium matter?
A patient with chronic atrial fibrillation is prescribed digoxin. Which effect is the main reason it may be used to manage the arrhythmia?
- A
It reliably converts atrial fibrillation to a normal rhythm.
- B
It slows AV-node conduction to help control the ventricular rate.
- C
It prevents blood clots from forming.
- D
It reliably reduces mortality in heart failure.
A patient taking digoxin and a potassium-wasting loop diuretic has a low potassium level. Why does this finding raise concern?
- A
It can increase the heart’s sensitivity to digoxin and raise toxicity risk.
- B
It prevents digoxin from being absorbed.
- C
It makes digoxin leave the body faster.
- D
It rules out digoxin toxicity.
An older adult taking digoxin develops worsening kidney function. What is the key medication-safety concern?
- A
Reduced kidney function makes digoxin leave the body faster.
- B
Kidney function does not affect digoxin clearance.
- C
Reduced kidney clearance can cause digoxin to accumulate.
- D
Worsening kidney function always lowers the digoxin level.
Which medication named in the material can raise digoxin concentrations when used concurrently?
A clinician orders a digoxin level to help evaluate treatment. When should the blood sample generally be collected?
- A
Immediately after the dose.
- B
At least 6 hours after the last dose, or just before the next dose.
- C
Only after a meal.
- D
At any time; timing does not affect the result.
Digoxin toxicity can occur even when a measured serum level is not above what value? Enter the concentration in ng/mL.