This presentation is about cardiac arrhythmias and their classification.

1. ‫الرحیم‬ ‫الرحمن‬ ‫هللا‬ ‫بسم‬

2. Cardiac Arrhythmias
Classification

3. Cardiac Arrhythmias
 Any abnormal alteration in either rate or rhythm of cardiac
contraction is termed as cardiac arrhythmia.

4. Classification
Disturbances of Impulse Formation Disturbances of Impulse Conduction
• Disturbances of sinus mechanism
• Sinus tachycardia
• Sinus bradycardia
• Sinus arrhythmia
• Disturbance of atria
• Atrial premature contraction
• Atrial fibrillation
• Atrial flutter
• Paroxysmal supraventricular tachycardia (PSVT)
• Disturbance of atrioventricular (AV) node
• Junctional ectopic
• Junctional rhythm
• Junctional tachycardia
• Disturbance of ventricles
• Ventricular ectopic
• Ventricular tachycardia
• Ventricular fibrillation (VF)
• Sinoatrial blocks
• AV nodal blocks
• First degree block
• Second degree block
- Wenckebach (Mobitz type 1) block
Mobitz type II block
• Complete or third degree block
• Bundle blocks
• Right bundle branch block
• Left bundle branch block
• Left anterior hemi block
• Left posterior hemi block

5. Sinus Arrhythmia
 Definition-This is a phasic alteration in the heart rate in
relation to breathing. The heart rate increases in inspiration
and decreases in expiration.
 Significance-This is the most common arrhythmia. It is a
normal phenomenon and is a manifestation of normal
autonomic nervous activity.