Digoxin effect

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Synonyms and keywords: dig effect

Teh dig effect refers to a constellation of non-specific electrocardiographic findings which include the following in variable combinations: T wave inversions, T waves flattening, U waves, PR prolongation, ST-segment depression with a “scooped” appearance and Short QT due to an abbreviated ventricular action potential.

The following findings are suggestive of the dig effect:

• Sinus bradycardia
• T wave inversions
• T waves flattening
• U waves
• PR prolongation
• ST-segment depression with a “scooped” appearance
• Short QT due to an abbreviated ventricular action potential

Shown above is an EKG pattern of the dig effect with ST-segment depression with a “scooped” appearance.