Digoxin toxicity causes a variety of arrhythmias. It is classically associated with supraventricular tachycardias but a slow ventricular response, e.g. atrial tachycardia with 2:1 block. It may also cause sinus bradycardia, slow or regularised AF, AV blocks, PVCs or VT.
Digoxin toxicity should be separated from the normal digoxin effect that can occur in patients taking the expected dose of digoxin. The digoxin effect includes sagging ST segment depression, abnormal T waves (flat, inverted or biphasic) and a short QT.
- Hampton, J and Hampton, J (2019) - The ECG Made Easy, 9th edn, Elsevier
- Thaler, MS (2018) - The Only EKG Book You'll Ever Need, 9th edn, Lippincott Williams and Wilkins
- (2015) - ECG Interpretation Made Incredibly Easy!, 6th edn, Lippincott Williams & Wilkins
- Houghton, AR and Gray, D (2014) - Making Sense of the ECG: A Hands-on Guide, 4th edn, Taylor and Francis
- Wagner, GS and Strauss, DG (2013) - Marriott's Practical Electrocardiography, 12th edn, LWW