ECG

Also known as: Electrocardiogram, EKG

Heart No sample — electrodes on chest and limbs
Patient Friendly Summary

An ECG is a 10-second movie of your heart's electrical system. Don't be alarmed by scary-sounding machine printouts like 'abnormal ECG' — many are false alarms that a doctor can dismiss in seconds.

What this test means

The ECG traces each heartbeat's electrical wave. It shows heart rate, rhythm, and patterns that can suggest strain, old or ongoing injury, and electrolyte effects.

Why it is done

It is done for chest pain, palpitations, giddiness, before surgery, and in routine health checks.

Understanding your value

If your value is high

Abnormal patterns can be seen with rhythm problems, heart strain, or injury — many minor variations are harmless and need only a doctor's reading.

If your value is low

A normal ECG is reassuring but does not rule out every heart condition — some problems show only during symptoms or exertion.

About the normal range

ECG machines print automatic interpretations that are often over-cautious. The cardiologist's reading is what counts.

When to consult a doctor

Always have ECGs read by a doctor. Ongoing chest pain with an abnormal ECG is an emergency — go to a hospital immediately.

Frequently Asked Questions

It is done for chest pain, palpitations, giddiness, before surgery, and in routine health checks. Your doctor will decide if this test is right for your situation.

Abnormal patterns can be seen with rhythm problems, heart strain, or injury — many minor variations are harmless and need only a doctor's reading. This needs clinical correlation — always discuss your report with your doctor.

A normal ECG is reassuring but does not rule out every heart condition — some problems show only during symptoms or exertion. This needs clinical correlation — always discuss your report with your doctor.

A single value rarely tells the whole story. Results need to be read together with your symptoms, history, and other tests. Please consult your doctor for a proper interpretation.

Quick Facts

  • TestECG
  • Short formsElectrocardiogram, EKG
  • Sample typeNo sample — electrodes on chest and limbs
  • CategoryHeart

Related Terms

Normal Range Borderline

Specialists

Cardiology General Medicine

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Disclaimer: This information is for patient education only and does not replace medical advice, diagnosis, or treatment. Always consult a qualified doctor.