S.N. Meds: Cardiac Glycosides

What is the most common cardiac glycoside?

Digoxin (Lanoxin)

What do cardiac glycosides do?

+Positive inotropes (improve contractility and cardiac output)
+Negative dromotropic (slow AV conduction rate.)
+Negative chronotropes (HR & improve cardiac output). +Act as antiarrhythmic via tropic effect
**NI=Monitor K+ level, S/S toxicity

Digoxin Side Effects

+Anorexia, N/V, diarrhea (Early signs of digoxin toxicity is gastrointestinal manifestations)
+Headache
+Visual Disturbances: Diplopia, blurred vision, yellow-green halos, photophobia
+Bradycardia

Digoxin nursing interventions

+Take apical pulse for full minute
+contact HCP before med if pulse is <60 or >100
+Check dig level (Ther. Range: 0.5-2 ng/mL)
+Advise clients to to eat foods high in potassium (Fruits)

What is the antidote for digoxin toxicity?

Digoxin immune Fab (Digibind)