Holter

Holter Monitoring – Why Is It Done?

Holter monitoring is a portable device that continuously records the heart’s electrical activity, usually for 24–48 hours or longer, while you go about your normal activities.

It is done to:

  • Detect irregular heartbeats (arrhythmias)
  • Investigate palpitations, dizziness, or fainting
  • Identify heart rhythm problems that may not appear during a routine ECG
  • Monitor the effectiveness of heart rhythm treatment

Holter monitoring is painless and helps doctors understand how your heart rhythm behaves throughout the day and night.