Filgrastim, sold under the brand name Neupogen among others, is a medication used to treat low blood neutrophils due to a number of causes. This includes when it occurs following chemotherapy, radiation poisoning, HIV/AIDS, or is of unknown cause.
Bradycardia and heart block occur in 1 to 3 percent of patients receiving amiodarone. 2 Amiodarone-induced proarrhythmia occurs at an annual rate of less than 1 percent.
When used to treat ventricular tachycardia in patients with a pulse, runs of paroxysmal ventricular tachycardia, or narrow-QRS-complex tachycardias, amiodarone is given as a bolus of 150 mg over 10 minutes, followed by a continuous I.V. infusion starting at 1 mg/minute for 6 hours and then 0.5 mg/minute for 18 hours.