The world’s smallest pacemaker is now available at King’s Daughters
Medical Center. Electrophysiologist Terence Ross, M.D., recently performed
the hospital’s first implant of Micra, a device about 93 percent
smaller than traditional pacemakers.
“This is a significant advancement for our patients,” Dr. Ross
said. “Because Micra is so small, it can actually be implanted during
a cardiac catheterization procedure. No incisions are necessary and patients
never have to worry about lead changes or activity restrictions related
to the device,” he said.
Pacemakers are designed to sense and augment the heart’s natural
rhythms. When there’s a disturbance – such as a slow heart
rate – the pacemaker will send an electrical impulse to help restore
“The Micra pacemaker is completely self-contained,” Dr. Ross
noted. “Because of the way it’s implanted, there are no scars,
bumps or even outward signs that it’s onboard. There are no activity
restrictions and patients experience none of the obstructions to shoulder
movement that can occur with traditional pacemakers,” he added.
Micra is about the size of a large vitamin capsule. Its battery life is
estimated at 12 years, which is comparable to that of traditional pacemakers.
“Micra isn’t for everyone,” Dr. Ross said. “But
for those who need only a single chamber pacemaker, it is a great leap
The Micra transcatheter pacing system was designed and is manufactured
- It is safe for an MRI scan. Micra was designed, tested and approved to
be used safely with MRI scanners.
- Patients can pass through airport security normally, with only a few modifications.
- Patients can use mobile phones safely (but are advised to keep the phone
in a purse or pants pocket rather than breast pocket).
- Is safe around normally functioning household appliances, such as microwave ovens.
- Micra may be turned off if no longer needed.
- Patients can resume their normal daily activities, including exercise,
following the implant.
For more information about treatment for heart rhythm disorders, including
Micra, bradycardia, or atrial fibrillation, please call King’s Daughters
Cardiology at (606) 324-4745.