A Holter monitoring (24 to 48 hour ECG) is a diagnostic procedure test of the heart. It shows heart rhythm over one or more days. No ionising radiation when done without X-ray guidance.
General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.
A Holter monitoring (24 to 48 hour ECG) is a diagnostic procedure test of the heart. It shows heart rhythm over one or more days. No ionising radiation when done without X-ray guidance. What it shows: Heart rhythm over one or more days. generated by SI from cited sources · general information, not a diagnosis · consult a health professional
Heart rhythm over one or more days.
Palpitations, unexplained fainting.
Follow the centre's instructions; most need no special preparation.
No ionising radiation when done without X-ray guidance.
24 to 48 hours. General information, not a diagnosis. Results must be interpreted by a qualified health worker.
Diagnostic procedure
Consult a doctor to interpret results — a single test does not make a diagnosis.
Uses your location once to list the nearest facilities. Nothing is stored.
What does a holter show?
Heart rhythm over one or more days.
Why is a holter done?
Palpitations, unexplained fainting.
How do I prepare for a holter?
Follow the centre's instructions; most need no special preparation.
Does a holter use radiation?
No ionising radiation when done without X-ray guidance.
How long does a holter take?
24 to 48 hours
Why is Holter monitoring (24 to 48 hour ECG) done?
Palpitations, unexplained fainting.
How do I prepare for Holter monitoring (24 to 48 hour ECG)?
Follow the centre's instructions; most need no special preparation.
Is Holter monitoring (24 to 48 hour ECG) safe in pregnancy?
No ionising radiation when done without X-ray guidance.
SI text CC BY 4.0; RadiologyInfo.org (ACR/RSNA) and MedlinePlus linked as references only, no text copied.