4557, 4557M Screw-In |
Product Characteristics | |||
|---|---|---|---|---|
| US Market Release | Aug-88 | Serial Number Prefix | VQ or LAM | |
| Registered US Implants | 19,700 | Type and/or Fixation | Transvenous, Atrial-J, Screw-in | |
| Estimated Active US Implants | 4,400 | Polarity | Unipolar | |
| Advisories | None | Steroid | No | |
| Atrial Placement | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| System Longevity Study Results |
|
|||||||||
| Number of Leads Enrolled in Study | 294 | |||||||||
| Cumulative Months of Follow-Up | 18,465 | |||||||||
| Number of Leads Active in Study | 10 | |||||||||
| Qualifying Complications | 6 Total | |||||||||
| Extra Cardiac Stimulation | 1 | |||||||||
| Failure to Capture | 3 | |||||||||
| Failure to Sense | 1 | |||||||||
| Oversensing | 1 | |||||||||
