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? [email protected]
Practise Cardiovascular Drugs
55 free Cardiovascular Drugs MCQs from Pharmacology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Pharmacology questions like this
Pharmacology is on 7 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Cardiovascular Drugs questions
A factor with a mucopoly saccaride, present in liver, presenting in platelet aggregation is______________?
Sildenafil is inhibitor of_______________?
Which of the following is not a potassium sparing diuretic______________?
Which of the following is not a Glycoside ?
Which of the following drug is given for treating hypertensive crisis_______________?
Lidocaine produces its antiarrhythmic effects by_____________?