Normal ECG

Defining Criteria

• Should have P ,Q, R,S and T waves

• P wave should be followed by QRS complex , and QRS complex followed by T wave

• P - R intervel should be between 3 to 5 small boxes

• QRS complex should be narrow ,ie betweeen 1-3 small boxes

• R -R intervel should be regular

• Heart rate should be Between 50 to 100

• Should have pulse