Cardiac Arrhythmia

ECG ( electrocardiography)
- consist of 12 conventional electrode systems - 6 limb leads and 6 chest leads
- is a trace showing variations in potential over time arising from the heart


Normal ECG

• P-wave =
  
• PR segment
  
• QRS complex
  
• ST segment
  
• T wave

• TP interval

Arrhythmia

-Refer to any change in the normal rate or rhythm of the heart.

Sinus trachycardia
Sinus bradycardias