Right QRS Axis

Criteria

• QRS axis > 90 °
• QRS axis <= 180 °

Causes

• Right Ventricular Hypertrophy
  Right axis deviation can be caused by right ventricular hypertrophy.
• Right Ventricular Strain
  Right axis deviation can be caused by acute right ventricular strain
• Left Posterior Fascicular Block
  Right axis deviation can be caused by a left posterior fascicular block.
• Pulmonary Embolism
  Right axis deviation can be caused by a pulmonary embolism.
• Myocardial infarction
  Right axis deviation can be caused by a lateral MI.
• Chronic Obstructive Pulmonary Disease
  Right axis deviation can be caused by a chronic lung disease.
• Hyperkalemia
  Right axis deviation can be caused by hyperkalemia.
• Sodium Channel Blocker Toxicity
  Right axis deviation can be caused by sodium channel blockade.
• Wolff Parkinson White Syndrome
  Right axis deviation can be caused by Wolff Parkinson White syndrome.
• Dextrocardia
  Right axis deviation can be caused by dextrocardia.
• Premature Ventricular Complex
  Right axis deviation can be caused by a ventricular ectopic beat.
• Atrial Septal Defect
  Right axis deviation can be caused by a Secundum ASD.
• Paediatric
  Right axis deviation can be normal in a paediatric ECG.
• Normal ECG
  Right axis deviation can be normal in a vertically orientated heart of a tall, thin patient.

Abbreviation

• Right Axis

Synonyms

See Also