DYSRHYTHMIAS

Abnormal cardiac rhythms which are due to the following:

1. Tissue Ischemia
2. Hypoxemia
3. SNS and PNS influences
4. Lactic acidosis
5. Hemodynamic abnormalities
6. Drug toxicity
7. Electrolyte imbalances

• These are due to abnormal automaticity, abnormal duction or both.
• The most common complication and most major cause of death among clients with MI.
• The most common dysrhythmia in MI is Premature Ventricular Contractions (PVC.
• PVC's of 6 or more per minute is life-threatening.

Pathophysiology of PVC:

COMMON DYSRHYTHMIAS AFTER MI:
1. Sinus

• Sinus Tachycardia
• Sinus Bradycardia
• Sinus Dysrhythmia
• Sick Sinus Syndrome

2. Atrial

• Premature atrial contraction
• Paroxysmal atrial tachycardia
• Atrial Flutter
• Atrial Fibrillation

3. Ventricular

• Premature ventricular contractions
• Ventricular Bigeminy
• Ventricular fibrillation
• Ventricular tachycardia

4. Conduction defects

• First Degree AV Block
• Second Degree AV Block
• Third Degree AV Block