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Pacemakers, ICDs & Implantable Cardiac Devices

What your device actually does, how to live with it safely, what an ICD shock means and when to call 911 vs. Dr. Nyange, MRI and airport security guidance, and the conversations about device deactivation that are part of complete care.

✓ 4 pages✓ All device types✓ Safety guide✓ ICD shock protocol✓ PDF download
$37
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  • Pacemaker, ICD, CRT, and ILR — complete explanations
  • Indications for each device type
  • ICD shock response protocol — when to call 911
  • MRI, airport security, and electronics safety table
  • Battery life and generator replacement guidance
  • Device deactivation — the goals-of-care conversation
Get Cardiac Devices Guide — $37
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Most device patients leave the hospital without understanding what was implanted

A pacemaker implant or ICD procedure takes under an hour. The discharge education often takes five minutes. Patients go home with a device that can deliver an electric shock, that has specific MRI requirements, that needs its battery checked periodically, and that is monitoring their heart 24 hours a day — often without a clear explanation of any of this.

This guide provides the device education that should accompany every implant: complete, clear, and covering the specific scenarios — the shock, the airport, the MRI — that patients actually encounter.

What’s inside

1M+
Per Year
Pacemakers implanted globally — one of the most common cardiac procedures worldwide
45%
Mortality Reduction
ICDs reduce sudden cardiac death in appropriate HFrEF patients with EF <35%
10 yrs
Battery Life
Typical modern device battery lifespan before generator replacement is needed

“An ICD is not a treatment for heart disease — it is a safety net. The shock it delivers is proof the device did its job. What patients sometimes miss is that the underlying condition that made the ICD necessary still requires full medical management. The device and the medications work together.”

CN
Dr. Christabel Nyange, MD, MPH, FACC
Founder, ElinMed · Board-Certified Cardiologist

Common Questions

My ICD fired a shock. What should I do?
One shock that resolved your symptoms and you feel well: sit down, rest, and call Dr. Nyange same day — do not drive yourself to the ER unless you develop new symptoms. Multiple shocks in a short period, a shock during exertion with chest pain or dyspnea, or a shock followed by persistent symptoms: call 911 immediately. Every shock your ICD delivers is stored in device memory — Dr. Nyange can remotely interrogate what happened. The guide covers all shock scenarios.
Can I have an MRI with my device?
Most modern devices (implanted after 2011) are MRI-conditional, meaning MRI is safe under specific conditions — the magnet strength, scan protocol, and device programming must all be coordinated. Always disclose your device before any MRI scan. Bring your device card. Never assume an older device is MRI-compatible. The ordering physician must coordinate with your device clinic before the scan.
How will I know when my pacemaker battery needs replacement?
Your device is remotely monitored — battery status is transmitted automatically to your device clinic and Dr. Nyange. When the battery approaches end of service (typically 2-3 years before actual depletion), you will be scheduled for generator replacement — a simpler procedure than the original implant, as the leads are reused. You will also receive a warning at device checks. The battery does not die suddenly — there is ample warning and planning time.

Understand the device keeping your heart safe.

Complete device education — the guide your implant team should have given you.

Get Cardiac Devices Guide — $37