ECG - What Does It Mean And Why Should You Care?

May 29, 2023

What is ECG?

Electrocardiogram (ECG) is a test which records the electrical activities during contraction and relaxation of the heart to detect any heart-related abnormalities. These recordings are done with the help of a machine called an electrocardiograph.

Why is it relevant?

ECG of a healthy heart produces a characteristic shape. The damage to heart muscles or change in the heart rhythm impacts the heart’s electrical activities, leading to a change in the ECG shapes. These changes in the shape can be used to interpret underlying heart diseases and their risk. Hence, ECG is an important test commonly suggested in preventive healthcare.

Different types of ECG can be beneficial tools for measuring heart activities under different conditions:

  1. Resting ECG: This test is performed while resting. The patient is advised to stay still as movements of other muscles can interfere with the electric impulses generated from the heart.
  2. Ambulatory ECG: To perform this type of ECG, patients wear a portable device for at least 24 hours to record the functioning of the heart. It is helpful for patients with intermittent symptoms.
  3. Exercise Stress ECG: In this ECG, electric activities in the heart are recorded after physical activity, e.g., while you ride on a bike or walk on a treadmill.

Perspective of ECG

ECG test is advised to find any limitations in the functioning of the heart. It has become an essential tool for healthcare professionals to prevent heart attacks by evaluating heart conditions at early stages. It is performed due to symptoms related to heart disease, including pain in the chest, dizziness, palpitations, shortness of breath, and weakness. ECG can also help to find out:

  • Heart damage
  • Enlargement of the heart
  • Congenital cardiac defect
  • Poor blood supply to the heart
  • Heart inflammation
  • The heart rate and the rhythm
  • Know the effect of drugs and devices that can control the heart’s functioning
  • Position and size of different chambers of the heart

Impact and Science Behind It

It is a noninvasive test in which you are asked to lie down. The small patches known as electrodes are attached to the arms, legs and chest. These patches are connected to an electrocardiograph. The electric signals originating from the heart are recorded. It can be used as a preventive test to help diagnose heart problems early and prevent severe complications like a heart attack. These preventive tests are especially beneficial for patients with chronic diseases.

A heart rate of 60-100 beats per minute is considered normal. Also, if the heart rhythm is even and consistent, it is considered normal.


In simple words, ECG can detect heart disease and associated risks. If you have a family history of cardiac complications or display symptoms like chest pain, dizziness, irregular heartbeats, or fainting, your doctor will advise ECG to know your health.

Early diagnosis of cardiac abnormalities with the help of ECG can reduce complications and medical expenses in the future. To know more about cardiac conditions and other tests related to cardiac issues, visit Circle Health Website. You can also Call +917676312288 to know more.