ECG rhythms

I. Supraventricular

• Normal Sinus
• Sinus Dysrhythmia
• Sinus Bradycardia (<60)
• Sinus Tachycardia (100-160)
• Premature Atrial Contractions
• Multifocal atrial tachycardia (100-180)
• A. Flutter (250-350)
• Atrial Fibrillation
• Paroxysmal supraventricular tachycardia (aka SVT or PSVT)

II. Junctional

• (40-60)
• DDx: CHF, HF, myocarditis, hyperkalemia, Digoxen Toxicity

III. Ventricular

• Premature ventricular contraction
• Accelerated Idioventricular Rhythms (AIVR)
• Ventricular Tachycardia
• Torsades de Pointes
• Ventricular Fibrillation

IV. Conduction Disturbances

• AV Block
  • First Degree
    • Prolonged PR interval (>200msec) but constant and always conducts
  • Second Degree
    • Type I
    • Mobitz I (Wenckeback)
      • Progressive prolongation with intermittent dropped QRS complexes
      • Progressively shortening RR intervals
    • Type II
    • Mobitz II
      • PR interval is constant with intermittent P waves not conducting QRS complexes
      • Surrounding RR intervals are constant
  • Third Degree
    • Complete Heart Block - no AV conduction
    • Dissociation between P waves and QRS complexes

V. Preterminal

• PEA
• Asystole

VI. Preexcitation Syndromes

• WPW

See Also

• Antiarrhythmics
• ACLS (Main)
• ECG (Main)
• Life in the Fast Lane: http://lifeinthefastlane.com/ecg-library/basics/