What is ECG? Why it is very important ?

What is ECG (Electrocardiogram)?

An ECG (Electrocardiogram) is a simple, non-invasive test that records the electrical activity of the heart. It helps in detecting abnormal heart rhythms, heart diseases, and other cardiac conditions by showing how the heart beats over time.

💓 The ECG produces a graph with waves (P, QRS, T) that represent different phases of the heartbeat.

Why is ECG Important?

ECG is crucial in diagnosing and monitoring heart conditions because it helps to:

✅ Detect Heart Attacks (Myocardial Infarction) – Identifies signs of past or current heart attacks.

✅ Check for Arrhythmias (Irregular Heartbeats) – Helps diagnose fast, slow, or abnormal rhythms.

✅ Assess Heart Function in Chest Pain – Determines if the chest pain is heart-related or due to other causes.

✅ Identify Blockages in Blood Flow – Detects ischemia (reduced blood supply to the heart).

✅ Monitor Heart Health After Surgery or a Pacemaker Implant – Ensures proper heart function.

✅ Evaluate Effects of Medications – Some heart medications can affect the heart rhythm.

When Should You Get an ECG?

You may need an ECG if you experience:

🔴 Chest pain or discomfort

🔴 Shortness of breath

🔴 Dizziness or fainting

🔴 Irregular heartbeat (palpitations)

🔴 Unexplained fatigue

Types of ECG Tests

1️⃣ Resting ECG – Done while lying down in a relaxed state.

2️⃣ Stress ECG (Treadmill Test – TMT) – Performed during physical activity to check heart function under stress.

3️⃣ Holter Monitor (24-48 Hours ECG) – A portable ECG worn for a day or more to record continuous heart activity.