Cardiovascular Medicine Book

Approach

Atrial Fibrillation

Bradycardia

Information Resources

Miscellaneous

Symptoms

Tachycardia

Coronary Artery Disease Chapter related topics

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Myocardial Disorders Chapter related topics

Obstetrics Chapter related topics

Pericardial Disorders Chapter related topics

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Atrial Fibrillation EKGAka: Electrocardiogram in Atrial Fibrillation

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  1. Electrocardiogram
    1. No discrete atrial activity
      1. Discrete P Waves absent
      2. Atrial Fibrillation waves (f waves) seen
        1. Small irregular waves at rate of 150-300 bpm
        2. Difficult to detect at high atrial rates (fine)
    2. Ventricular response 160-200 bpm
      1. Irregularly irregular rhythm
      2. Inconsistent R-R interval
    3. No history of AV nodal blocking drugs
  2. Differential Diagnosis of Atrial Fibrillation Causes
    1. Acute coronary ischemia
      1. Left QRS Axis
      2. Left P Wave Axis
    2. Acute Pulmonary Disease
      1. Right QRS Axis
      2. Right P Wave Axis
    3. Mitral Stenosis
      1. Right QRS Axis
      2. Left P Wave Axis
    4. Lone Atrial Fibrillation
      1. Normal or Left QRS Axis
      2. Normal or Left P Wave Axis
    5. Thyrotoxicosis
      1. Normal QRS Axis
      2. Normal P Wave Axis
    6. Holiday Heart
      1. Normal QRS Axis
      2. Normal P Wave Axis
    7. Atrial Flutter
      1. Prominent saw tooth waves
      2. Atrial rate slower than Atrial Fibrillation

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