A Holter monitor records your heart activity nonstop for a day or two. You wear it as you go about your usual activities and overnight.
Your cardiologist, or heart doctor, may order it for you if your heartbeat is too fast or too slow, or if it feels like it skips a beat. If you have symptoms like low blood pressure, dizziness, and shortness of breath, your doctor may want you to wear one. You may have had an EKG but it didn’t show why you have these symptoms. Your heartbeat could even be normal. Or your doctor wants you to wear a Holter monitor because you’ve been diagnosed with a heart condition. That makes you more likely to have an irregular heartbeat.
Other reasons you may need a Holter monitor include:
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