A Holter monitor is a portable electrocardiogram (ECG) and is used to continuously monitor a patient’s heart for the duration of 24-72 hours. The duration of the monitor is dependent on both your symptoms and the doctor’s evaluation for finding a suitable diagnosis. This is typically used for ongoing symptoms of palpitations, dizziness, presyncope or syncope evaluation. It is also used to diagnose several types of arrythmias.
Holter monitors are also used to assess: