A pacemaker monitors and regulates abnormal heart rhythms with low-energy pulses, while an ICD provides higher-energy shocks to reset the heart during sudden cardiac arrest. Both devices have leads that connect to the heart, but ICD leads can deliver defibrillation shocks to treat life-threatening arrhythmias unlike pacemaker leads which only pace the heart.

1. Difference Between A
Pacemaker and an ICD
Jason Rockhold
Certified Device Specialist

2. What is a pacemaker?
popsci.com
http://stanfordhospital.org/clinicsmedServices

3. What is an ICD
• ICD = Implantable Cardiac Defibrillator
• Delivers up to 850 V and 40 Joules
• Resets the Heart
• Sudden Cardiac Arrest
• Also Has Pacemaker
en.wikipedia.org

4. Pacemaker Leads
machine-history.com

5. ICD Leads
washingtonhra.com