ECG Test in Shree Vaishnavi Heart Centre – Best Multi Speciality Clinic in Bangalore

Electrocardiogram (ECG) Test in BTM layout, Bangalore

Home » Electrocardiogram (ECG) Test in BTM layout Bangalore

Electrocardiogram (ECG) Test in Bangalore

Contact Shree Vaishnavi Heart Centre for Electrocardiogram (ECG) Test in Bangalore.

Electrocardiogram (ECG) Test Test in Bangalore

Electrocardiography (ECG or EKG ) is the process of recording the electrical activity of the heart over a period of time using electrodes placed over the skin. These electrodes detect the tiny electrical changes on the skin that arise from the heart muscle’s electrophysiologic pattern of depolarizing and repolarizing during each heartbeat. It is very commonly performed to detect any cardiac problems.

In a conventional 12-lead ECG, ten electrodes are placed on the patient’s limbs and on the surface of the chest. The overall magnitude of the heart’s electrical potential is then measured from twelve different angles (“leads”) and is recorded over a period of time (usually ten seconds). In this way, the overall magnitude and direction of the heart’s electrical depolarization is captured at each moment throughout the cardiac cycle.[5] The graph of voltage versus time produced by this non-invasive medical procedure is an electrocardiogram.

There are three main components to an ECG: the P wave, which represents the depolarization of the atria; the QRS complex, which represents the depolarization of the ventricles; and the T wave, which represents the repolarization of the ventricles. It can also be further broken down into the following:

  • O is the origin or datum point preceding the cycle
  • P is the atrial systole contraction pulse
  • Q is a downward deflection immediately preceding the ventricular contraction
  • R is the peak of the ventricular contraction
  • S is the downward deflection immediately after the ventricular contraction
  • T is the recovery of the ventricles
  • U is the successor of the T wave but it is small and not always observed
Electrocardiogram (ECG) Test Test in Bangalore

During each heartbeat, a healthy heart has an orderly progression of depolarization that starts with pacemaker cells in the sinoatrial node, spreads throughout the atrium, passes through the atrioventricular node down into the bundle of His and into the Purkinje fibers, spreading down and to the left throughout the ventricles. This orderly pattern of depolarization gives rise to the characteristic ECG tracing. To the trained clinician, an ECG conveys a large amount of information about the structure of the heart and the function of its electrical conduction system. Among other things, an ECG can be used to measure the rate and rhythm of heartbeats, the size and position of the heart chambers, the presence of any damage to the heart’s muscle cells or conduction system, the effects of heart drugs, and the function of implanted pacemakers.

Electrocardiogram (ECG) Test Test in Bangalore.

What Is an Electrocardiogram (ECG)?
What to expect when undergoing this test

The electrocardiogram, also referred to as ECG, 12-lead ECG, or EKG, is a non-invasive diagnostic test that evaluates your heart’s electrical system to assess for heart disease. It uses flat metal electrodes placed on your chest to detect the electrical charges generated by your heart as it beats, which are then graphed. Your doctor can analyse the patterns to get a better understanding of your heart rate and heart rhythm, identify some types of structural heart disease, and evaluate cardiac efficiency.

Purpose of Test

An ECG detects your heart’s electrical rhythm and produces what’s known as a tracing, which looks like squiggly lines. This tracing consists of representations of several waves that recur with each heartbeat, about 60 to 100 times per minute. The wave pattern should have a consistent shape. If your waves are not consistent, or if they do not appear as standard waves, this is indicative of heart disease.

There are a variety of characteristic changes that occur with different heart concerns, and your doctor can look at your ECG wave patterns to see if they are suggestive of certain types of heart disease.

Many doctors order an ECG as part of a yearly medical examination to screen for heart disease. This may apply to you if:

  • You have had heart disease in the past
  • You have a medical condition that predisposes you to heart disease, such as hypertension, diabetes, high cholesterol, or inflammatory disease
  • You have other significant risk factors for cardiac disease

An ECG may also be recommended if you have signs or symptoms of heart disease, such as chest pain, shortness of breath, lightheadedness, dizziness, or fainting spells. Likewise, if you have signs of a TIA or stroke, such as vision changes, numbness, weakness, or communication problems, you are also likely to need an ECG because some types of heart disease can cause a stroke.
If you have heart disease, you may need periodic ECG testing to evaluate whether your disease is worsening and to monitor the treatment effects of your heart medications.

An ECG is also required prior to any type of heart surgery, including surgery for pacemaker placement. A pre-operative screening ECG is required prior to any surgical procedure that involves general anesthesia because heart disease increases the risk of adverse events from general anesthesia and because this helps your anesthesiologists as they plan your anesthetic medications and surgical monitoring.

Conditions that can be detected by ECG

There are a number of conditions that can be detected when your doctor checks your pulse, such as tachycardia (rapid heart rate), bradycardia (slow heart rate), and arrhythmia (irregular heart rate). EKG wave patterns not only verify these alterations in heart rhythm, certain changes in the shape of the waves provides information about the specific type of heart disease and which region in the heart is affected.


  • The ECG reveals the heart rate and rhythm only during the few seconds it takes to record the tracing. If an arrhythmia (heart rhythm irregularity) occurs only intermittently, an ECG might not pick it up, and ambulatory monitoring may be required.
  • The ECG is often normal or nearly normal with many types of heart disease, such as coronary artery disease.
  • Sometimes, abnormalities that appear on the ECG turn out to have no medical significance after a thorough evaluation is done.

Contact Shree Vaishnavi Heart Centre for Electrocardiogram (ECG) Test in Bangalore

Check our List of Top Doctors in BangaloreSpecialties at Shree Vaishnavi Heart Centre.

Click here to Book an Appointment for Electrocardiogram (ECG) Test in Bangalore