Holter: Average Rate Guidelines (Bradycardia-Normal-Tachycardia) by Mario Blitzman
Important details to be considered in the Holter reports:
Holter monitoring is an ambulatory 24 hours ECG, that means the interpretation will differ with the basic ECG in many different aspects.
For example in normal ECG, when the patient is lying down, we expect heart rates between 60 to 80 bpm, remember the patient is awake and relaxed during the recording.
In the Holter study, we explain to the patient to do normal activities. For this reason normal parameters will be different compared with 12 leads ECG. Sudden changes in heart rates are product of variable physical activities, stress or maybe cardiac disorders.
Assuming an average patient sleeps 8 hours and is awake the other 16 hours, and considering as normal average values of : (awake) 60-100bpm and (asleep) 50-80bpm, the normal average rates for a period of 24 hours are approximately:
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