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Digoxin

Trade Name

Lanoxin

Indication

CHF, AFib, A-flutter

Action

Positive inotropic effect (increases force of myocardial contraction), prolongs refractory period, ↓ conduction through SA and AV nodes. Essentially digoxin is given to increase cardiac output and slow the rate.

Therapeutic Class

Antiarrhythmic, inotropics

Pharmacologic Class

Digitalis glycosides

Nursing Considerations

• Excreted by kidneys • Assess patient for hypersensitivity • Contraindicated with uncontrolled ventricular arrhythmias • Hypokalemia increase risk for toxicity • Hypercalcemia ↑ risk for toxicity • Use caution with diuretic use as they may cause electrolyte abnormalities that can lead to toxicity • Assess patient for cardiac arrhythmias including bradycardia • Signs of toxicity include vision changes (blurred vision, yellow, green vision disturbances) • Monitor pulse rate for 1 full minute prior to dosing patient (hold for pulse