An Electrocardiogram (ECG) is a simple, non-invasive diagnostic test that records the electrical activity of the heart. Every heartbeat is triggered by an electrical impulse, and the ECG captures these impulses as wave patterns. These patterns help doctors assess heart rhythm, rate, and the presence of structural or functional abnormalities.
ECG is one of the most commonly used cardiac tests because it provides rapid information about heart health. It is especially valuable in detecting arrhythmias, heart attacks, conduction defects, and effects of electrolyte imbalance or medications on the heart.
Why Is This Test Recommended?ECG is recommended for individuals experiencing chest pain, palpitations, dizziness, fainting, shortness of breath, or unexplained fatigue. It is also routinely done before surgeries, during health checkups, and for patients with diabetes, hypertension, or known heart disease.
What Do the Results Indicate?Abnormal ECG findings may indicate ischemic heart disease, previous or ongoing heart attack, irregular heart rhythms, heart enlargement, or electrolyte disturbances. Normal results suggest stable electrical heart function but do not always rule out heart disease.
How Is the Test Performed and Prepared For?Small electrodes are placed on the chest, arms, and legs. The test takes only a few minutes and does not require fasting. Patients should remain still and relaxed during the recording.
Frequently Asked Questions (FAQs)Is ECG painful? – No
Can ECG detect a heart attack? – Often
Does a normal ECG mean a healthy heart? – Not always
Is ECG safe during pregnancy? – Yes
Is repeat testing common? – Yes
