Digitalis induced automaticity is enhanced by______________?
Correct answer: D. Low K+ levels
- A. High K+ levels
- B. High Ca2+ levels
- C. High Na+ levels
- D. Low K+ levels
Explanation
Hypokalaemia enhances digoxin binding to Na⁺/K⁺-ATPase and increases ectopic automaticity, predisposing to arrhythmias. Hyperkalaemia reduces digoxin binding, although hypercalcaemia can also increase toxicity.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Cardiovascular Drugs
55 free Cardiovascular Drugs MCQs from Pharmacology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Pharmacology questions like this
Pharmacology is on 4 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
Which of the following statements concerning potassium channel openers is true?
Aspirine is useful in all the following conditions EXCEPT_____________?
Prolonged use of aspirin leads to______________?
Aspirin causes___________?
Clotting time is most like to be prolonged by the administration of____________?