What we are studying
The purpose of this study is to collect information over time regarding how Medtronic systems are working in patients. The entire system includes the device (IPG, ICD, or CRT), the lead(s), and all associated parts. Medtronic has been collecting information about how their products work for over 25 years. This study is also being used to collect information needed by the Food and Drug Administration (FDA) in the United States to see how devices are working.