For some people, a slow heart rate is normal and never causes any symptoms.
But if your heart beats slowly enough that your brain and other organs don't get enough oxygen and nutrients, your body may quickly tell you something is awry.
Symptoms may include:
Call 911 if you experience:
It's very important to tell your doctor how you're feeling — even if symptoms are mild. The way a slow heart rate affects your ability to do things will help determine if and when you need a pacemaker or other advanced treatment. These symptoms could also be caused by aging or other medical conditions such as anemia or hypothyroidism (a thyroid that doesn't produce enough thyroid hormone).
If untreated, bradycardia can lead to complications, including congestive heart failure, stroke and, in some cases, sudden death. So if you have concerns, speak up.