What is ECG rhythm? why do ECG important for heart patients?

What is ECG rhythm? why do ECG important for heart patients?


The electrocardiogram (ECG) rhythm records the electrical signals in your heart. It is a simple and painless test that can be used to quickly diagnose heart problems and monitor your heart health.


Electrocardiogram (ECG) rhythm is one of the simplest and oldest cardiac investigations available.

Although it can provide a wealth of useful information and is an important part of the cardiovascular assessment.



ECG electrode placement:



surface ECGs can be obtained quickly and easily at the bedside and are based on relatively simple electrophysiological concepts.

Yet it is difficult for junior doctors to understand them. Before ECG If you have a resting ECG, there is nothing else to do before taking the test.

If you have a workout ECG, make sure you are wearing comfortable clothes and shoes that you can exercise.

Avoid eating or drinking caffeine for two hours before the test because it can also help your heart rhythm.

Electrocardiography (ECG / EKG) is the primary diagnostic method in cardiology. It monitors the electrical activity of the heart (as an electrocardiogram) as measured from the surface of the body and allows its evaluation.

ECG tests are mostly non-invasive using electrodes placed on the skin. However, it is also possible to measure the ECG either from the esophagus wall or on the right side of the heart.

Since the electrical activity of the heart is important for its mechanical activity, the ECG has an important diagnostic role in many heart diseases.

In addition, we can detect disturbances arising from additional cardiac causes (eg, thyroid dysfunction, ionic dysbalance). However, an ECG test is not sufficient to make a complete diagnosis.


How does it work?


During the ECG, 12 sensors (electrodes) are attached to your chest and organs. Adhesive patches with wires connecting the electrodes to the monitor.

They record electrical signals that cause your heartbeat. A computer records information and displays it in waves on a monitor or paper.

Your doctor will review the information heart diseases#ecg#blood pressurerecorded by the ECG machine and if you have any problems with your heart.


Heart rate :


Generally, heart rate can be measured by checking your pulse. The ECG can help you accurately calculate if your pulse is difficult or too fast or too irregular.

The ECG can help your doctor diagnose an abnormally rapid heart rate (tachycardia) or an abnormally slow heart rate (bradycardia).


Heart Rhythm:


An ECG shows heart rhythm manipulation (arrhythmia). These conditions can occur when any part of the heart’s electrical system is malfunctioning.

In other cases, drugs such as beta-blockers, cocaine, amphetamines, and over-the-counter cold and allergy medicines can induce arrhythmia.

 ECG in myocardial infarction:


The ECG can show evidence of a previous heart attack or progression. The patterns in the ECG indicate what part of your heart is damaged, as well as the extent of the damage. Blood and oxygen are right for the heart.

Decreasing the blood flow to the heart muscle, such as the chest pain of ECG unstable angina, when you have symptoms can help your doctor determine whether chest pain is present.


Structural Abnormalities:


ECG can provide evidence of enlargement of the chambers or walls of the heart, heart defects, and other heart problems.

ECG can diagnose irregular heart rhythms or myocardial infarction:


  • Abnormally rapid or irregular heart rhythms Abnormally slow heart rhythms Abnormal circulation of cardiac impulses, which may indicate underlying cardiac or metabolic disorders.ECG MACHINE
  • Proof of myocardial infarction (myocardial infarction)
  • Evidence of a developing severe heart attack.
  • Evidence of severe impairment of blood flow to the heart during an episode of threatening heart attack (unstable angina).
  • Adverse effects on the heart from various heart diseases or systemic diseases (high blood pressure, thyroid conditions, etc.)
  • Negative effects on the heart from certain lung conditions (emphysema, pulmonary embolus [blood clots] Some congenital heart abnormalities Evidence of abnormal blood electrolytes (potassium, calcium, magnesium).
  • Evidence of inflammation of the heart or its lining (myocarditis, pericarditis).


An electrocardiogram (ECG) is a graphic record of electrocardiography. The ECG curve consists of P, Q, R, S, T, and sometimes U waves.

There are very important breaks and sections between the waves for the interpretation of the ECG.

Each ECG description should start with a description of the heart rhythm (regularly or irregularly, sinus or non-sinus rhythm) and frequency.


You may need an ECG if you have any of the following signs and symptoms:


  • Chest pain Dizziness,
  • mild headache or confusion Heart palpitations 
  • The fastest pulse Shortness of breath
  • Weakness, fatigue, or decline in exercise ability.