Whats pacing and why do I have it?
A. Almost all implantable cardioverter-defibrillators have built in circuitry to pace the heart, in addition to familiar “zapping” function to correct V-Tach or V-Fib, when the heart beats too fast. The pacing function starts if the heart beats too slowly. That happens to many of us, especially when we sleep, because some of the anti-arrhythmic medicines we take do slow down the heart beat. Newer ICD models will actually try to pace you out of a dangerous arrhythmia, before giving you a full powered therapy.
