What is ECG?

An ECG (Electrocardiogram) is a test that records the heart's electrical activity over time using electrodes placed on the skin. It is used to assess the heart's function and detect abnormalities.

What ECG Detects:

• Heart rhythm problems: Arrhythmias like atrial fibrillation or tachycardia.
• Heart attacks: Ongoing or past myocardial infarction.
• Ischemia: Reduced blood flow to the heart.
• Structural issues: Heart enlargement or hypertrophy.
• Electrolyte imbalances: Abnormal potassium or calcium levels.
• Conduction problems: Delays or blocks in electrical pathways.

12-Lead ECG Details

Lead Placement:

Limb Leads:

• RA (Right Arm): Right wrist or upper arm.
• LA (Left Arm): Left wrist or upper arm.
• RL (Right Leg): Right ankle (ground lead).
• LL (Left Leg): Left ankle.

Chest (Precordial) Leads:

• V1: Fourth intercostal space, right of the sternum.
• V2: Fourth intercostal space, left of the sternum.
• V3: Midway between V2 and V4.
• V4: Fifth intercostal space, midclavicular line.
• V5: Same horizontal line as V4, anterior axillary line.
• V6: Same horizontal line as V4, midaxillary line.