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.
Causes of Bradycardia. Causes of Bradycardia. Bradycardia has many different causes, including age-related deterioration of the heart, underlying conditions that slow the pacing through the heart, drug abuse and medications. List of causes of Bradycardia. Athlete - a slow heart rate can be normal in very physically fit athletes.