Arrhythmias - Differential Diagnosis Algorithm
May present as: palpitations, dizziness, syncope, chest discomfort
Cardiac Causes:
- Structural
• Valve disease
• Cardiomyopathy
- Electrical Conduction Abnormalities
• Ectopic foci
• Accessory pathway
• Scar tissue (previous MI)
Non-Cardiac Causes:
- High Output State:
• Anemia
• Fever/infection
• Pregnancy
- Metabolic:
• Hypoglycemia
• Thyrotoxicosis
• Pheochromocytoma
- Drugs:
• Alcohol
• Caffeine
• Sympathomimetics
• Anticholinergics
• Cocaine
- Psychiatric:
• Panic Attack
• Generalized Anxiety Disorder
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