Implantable cardioverter-defibrillators (ICDs) are designed to treat
potentially life-threatening ventricular arrhythmias, which are often recorded
as dangerously high heart rates (tachycardia). The ICD is programmed to
discharge at a specific rate, reducing potentially dangerous
arrhythmias.
People with ICDs who are eligible for exercise training should be
knowledgeable and comfortable with the benefits and limitations of their
devices and have no abnormal heart rhythms or rates. Ask your
doctor before beginning a new exercise program.
Whenever possible, people with ICDs should be monitored by
electrocardiography (ECG, EKG) telemetry during exercise. Also, it is important
to know and understand that ICDs are set to discharge at a specific heart rate.
Therefore, your target heart rate during exercise should be at least 10 to 15
beats below the ICD discharge heart rate.
Using RPE as an alternative measure
Rating of perceived exertion (RPE) is a valuable and reliable
indicator in monitoring your exercise tolerance. It is usually used as part of
an organized cardiac rehab program and may be valuable for those who have
trouble monitoring their heart rate. It is probably most useful to first learn
about RPE with a health professional (such as an exercise physiologist or
trainer), and then you may be able to use it when you exercise on your own. For
more information, see
monitoring your rating of perceived exertion
(RPE).