Electrocardiogram (ECG)

An Electrocardiogram (ECG) is a medical test that records the electrical activity of the heart over a period of time. It helps in diagnosing various heart conditions like arrhythmias, myocardial infarctions, and other abnormalities.

How Does an ECG Work?

Electrodes are placed on the chest, arms, and legs to detect electrical impulses generated by the heart. These signals are displayed as waveforms, helping doctors assess heart function.

Understanding ECG Readings

• P-Wave: Represents atrial depolarization (atria contraction).
• QRS Complex: Represents ventricular depolarization (ventricle contraction).
• T-Wave: Represents ventricular repolarization (ventricle relaxation).

Importance of ECG

• Detects arrhythmias and heart abnormalities.
• Helps diagnose heart attacks.
• Assists in monitoring heart diseases and treatment effects.

Types of ECG

• Resting ECG: Performed while the patient is at rest.
• Holter Monitor: Worn for 24-48 hours to record heart activity.
• Stress ECG: Conducted while the patient is exercising.