Adult Dosing
Life-threatening digoxin intoxication
Dosage for acute ingestion of known amounts of digoxin or digitoxin
- Dosage varies according to the amount of digoxin or digitoxin to be neutralized
- Each vial neutralizes approximately 0.5 mg of digoxin
- Total number of vials required can be calculated by dividing the total body load of digoxin in milligrams by 0.5 mg per vial
- Alt: 10 vials IV x1 for 25 tabs/caps ingested acutely
- Therapy may be given as 10-20 vials IV x1 if the amount of digoxin ingested is unknown
- If toxicity is not adequately reversed after several hours, or if it appears to recur, additional therapy administration at a dose guided by clinical judgment may be required
Dosage based on steady-state serum digoxin concentrations (dosage for toxicity during chronic therapy)
- Dosage may vary according to the amount of digoxin or digitoxin to be neutralized
- No. of vials IV = Serum digoxin concentration in ng/mL x weight in kg/100; may be given as 6 vials IV x1 if serum digoxin levels are not available
- No. of vials IV = Serum digitoxin concentration in ng/mL x weight in kg/1000
Note:
- Therapy should be administered slowly as an intravenous infusion over at least 30 minutes; may be given by bolus injection if cardiac arrest is imminent
Pediatric Dosing
Life-threatening digoxin intoxication
Dosage for acute ingestion of known amounts of digoxin or digitoxin
- Dosage varies according to the amount of digoxin or digitoxin to be neutralized
- Each vial neutralizes approximately 0.5 mg of digoxin
- Total number of vials required can be calculated by dividing the total body load of digoxin in milligrams by 0.5 mg per vial
- Alt: 10 vials IV x1 for 25 tabs/caps ingested acutely
- Therapy may be given as 10-20 vials IV x1 if the amount of digoxin ingested is unknown; monitor volume overload in small children
- If toxicity is not adequately reversed after several hours, or if it appears to recur, additional therapy administration at a dose guided by clinical judgment may be required
Dosage based on steady-state serum digoxin concentrations (dosage for toxicity during chronic therapy)
- Dosage may vary according to the amount of digoxin or digitoxin to be neutralized
- Infants and children =<20 kg
- No. of vials IV = Serum digoxin concentration in ng/mL x weight in kg/100; may be given as a single vial IV if serum digoxin level is not available
- No. of vials IV = Serum digitoxin concentration in ng/mL x weight in kg/1000
Note:
- Because infants and small children have much smaller dosage requirements, it is recommended that the 40-mg vial be reconstituted as directed and administered with a tuberculin syringe
- Therapy should be administered slowly as an intravenous infusion over at least 30 minutes; may be given by bolus injection if cardiac arrest is imminent
[Outline]
See Supplemental Patient Information
- Suicidal ingestion may involve more than one drug. Consider toxic effects of other drugs or poisons, especially in cases where signs and symptoms of digitalis toxicity are not relieved by administration of the therapy
- Therapy may cause anaphylactic and anaphylactoid reactions, delayed allergic reactions, and a possible febrile response to immune complexes
- Carefully monitor patients for signs and symptoms of an acute allergic reaction during therapy and treat immediately with appropriate emergency medical care
- If an anaphylactic reaction occurs during infusion, the drug should be stopped at once and appropriate treatment administered; the need for epinephrine should be balanced against its potential risk in the setting of digitalis toxicity
- Do not administer in patients with a known history of hypersensitivity to sheep protein, papaya, papain, or the pineapple enzyme bromelain
- Serum potassium concentration may drop rapidly following therapy and must be monitored frequently, especially after the first several hours after therapy is given
- Patients with poor cardiac function may deteriorate secondary to the withdrawal of the inotropic action of digoxin by this product. Additional support can be provided by using other intravenous inotropes such as dopamine, dobutamine or vasodilators in such patients, if indicated. However, care must be taken not to aggravate the digitalis induced rhythm disturbances
- In patients with renal dysfunction, delayed/poor excretion of the Fab-digoxin complex from the body can possibly lead to recurrence of digoxin toxicity; monitor such patients for a prolonged period of time
Cautions: Use cautiously in
- Severe renal impairment
- Hypersensitivity to sheep products
Supplemental Patient Information
- Advise patients to contact their physician immediately if any signs and symptoms of delayed allergic reactions or serum sickness occur after hospital discharge
Pregnancy Category:C
Breastfeeding: Manufacturer advises caution