Verified By Apollo Cardiologist October 7, 2020
9722Electrocardiogram (ECG or EKG) is used by doctors to check a person’s heart rate and rhythm. This test helps doctors detect a heart attack, heart disease, any abnormal heart rhythms, or an enlarged heart that may result in heart failure.
It records the heart’s electrical activity through tiny electrode patches attached to the skin of the person’s arms, legs, and chest. ECG is a safe, quick, and painless testing technique that helps doctors to-
An ECG machine is a piece of standard equipment in every operating room and ambulances. Some smart gadgets also have an ECG testing facility.
If you have any symptoms related to heart problems, your doctor may recommend conducting an ECG test. The different types of ECG tests that can be conducted include –
In a standard ECG testing, small electrode patches are attached to the skin of the chest, legs, and arms of the person, which captures the reading of the heart’s electrical activity. This is a painless and non-invasive testing technique used to detect the heart rhythm at any point in time.
This is a small, wearable device that provides a continuous reading of the ECG recording. The device is used to capture the reading for 24 to 48 hours. This test is conducted after performing the conventional ECG test for checking the heart rhythm.
This is a type of heart monitoring device that provides recordings of your heart rhythms continuously for up to three years. It enables the recording of your heart’s electrical signals through remote monitoring with a tiny device inserted just beneath the chest’s skin.
This portable device is similar to the Holter monitor, which records the heart rhythm only at certain times for a few minutes. This can be worn for longer than a Holter monitor. Each time you observe any symptoms related to cardiac problems, a single push of a button will record and store the heart’s electrical activity for a few minutes, which the physician can later study.
This test detects any possible risk of getting a condition known as heart arrhythmia, resulting in cardiac arrest. While the test is similar to a standard ECG, it makes use of more advanced technology for analyzing such risks.
Your doctor may recommend an ECG if you experience any of the following symptoms –
However, if you have a family history of cardiac disease, your doctor might recommend an electrocardiogram as a screening test, even if you do not show any symptoms of heart problems.
ECG testing is usually done under professional medical supervision in a clinic or hospital. Here is what you will experience before, during, and after an echocardiogram –
· Before an ECG
You will need to change into a hospital gown. If your body’s area where the electrodes need to be placed has hair, the technician will shave the hair so that the electrodes stick to the body. Once you are ready, you will be asked to lie on a bed or examining table.
· During an ECG
During the examination, up to 12 sensors can be attached to your limbs and chest. The electrodes contain adhesive pads with wires connected to a monitor, recording the electrical signals as your heartbeats. A computer captures the reading and displays it on the monitor screen or paper.
While you are allowed to breathe normally during the test, you need to lie still for a few minutes while the testing is being done. Moving or talking during the test might produce distorted results.
· After an ECG
There are no restrictions imposed after the testing is complete. You can resume your normal activities after the ECG test has been done.
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An ECG is a completely safe procedure with no risk of getting an electrical shock during the testing. During the testing process, the electrodes do not produce any electricity and record only the electrical activity of your heart.
Your doctor will review the ECG recordings, usually on the same day as the test, to identify any complications with your heart, including:
The ECG makes use of standard terminology across different hospitals and countries for diagnosing test reports. The doctor will determine the type of ECG testing that will be appropriate in your case after checking your present health condition. If there is any abnormality in the ECG test report, your doctor may prescribe other additional tests to decide the future course of action.
Frequently Asked Questions (FAQs):
1. What is a normal ECG reading?
Each ECG cycle has 5 waves: P, Q, R, S, T corresponding to different phases our the heart activities. While the P wave represents normal atrium (upper heart chambers) depolarization, the QRS complex (one single heart beat) corresponds to depolarization of the left and right ventricles (lower heart chambers) and the T wave represents re-polarization (or recovery) of the ventricles. To interpret ECG, you needs to focus on the heart rate (frequency), shape, size and regularity of each individual waves and the timing as well as interaction between waves.
2. How accurate is the ECG for diagnosing a heart attack?
An ECG is an important test in suspected heart attacks. Heart attacks can be classified by measuring an ECG called the ST segment. This corresponds to the damage area inflicted on the heart.
3. Can ECG help to detect blocked arteries?
Your doctor might use electrocardiogram testing for determining or detecting abnormal heart rhythm caused by poor blood supply to the heart due to coronary arteries being blocked. The ECG can also determine whether you have had a heart attack before.
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