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.
If the tests find that you do have mild bradycardia and you donât have symptoms, your doctor will keep an eye on your condition, but you may not need treatment. What Causes Bradycardia. Your heart has a built-in pacemaker called the sinoatrial (SA) node that tells your heart how quickly to beat. As you age, the sinoatrial node can slow down, and that slows down your heart beat rate. Another cause of bradycardia is when the atrioventricular (AV) node stops working well and leads to a slower heart rate, Moss says.