51 Possible Causes for Left Axis Deviation in USA

  • Familial Progressive Cardiac Conduction Defect
    Left Axis Deviation
  • Hypertrophic Cardiomyopathy
    Left Axis Deviation

    ECG: Findings also may include right or left axis deviation, conduction abnormalities, sinus bradycardia with ectopic atrial rhythm and atrial enlargement. … axis deviation of the ECG are very likely to have idiopathic HCM. … Left ventricular hypertrophy is suggested by increased amplitude QRS complexes in leads 2 and aVF or by left axis deviation with increased amplitude R waves in leads I and[1] [2]

  • Endocardial Cushion Defect
    Left Axis Deviation

    axis deviation Biventricular hypertrophy Chest X-ray Cardiomegaly with increased pulmonary vascular markings Treatment Close the atrial and/or ventricular septal defects … to right atrial shunt, three leaflets with cleft in left atrioventriular valve Cardiac Auscultation Pulmonary flow murmur Atrioventricular regurgitation Electrocardiogram Left … EKG is characterized by left axis deviation, right atrial enlargement, bi-ventricular hypertrophy and an incomplete right bundle branch block (rSR in V1 indicating right ventricular[3] [4]

  • Morbid Obesity
    Left Axis Deviation
  • Left Ventricular Outflow Obstruction
    Left Axis Deviation
  • Left Bundle Branch Block
    Left Axis Deviation
  • Cardiac Amyloidosis
    Left Axis Deviation
  • Tricuspid Atresia
    Left Axis Deviation

    axis deviation on electrocardiography and left ventricular hypertrophy (since it must pump blood to both the pulmonary and systemic systems) normal heart size PGE1 to maintain … the VSD to the right ventricle to allow access to the lungs progressive cyanosis poor feeding tachypnea over the first 2 weeks of life holosystolic murmur due to the VSD left[5]

  • Ostium Primum Atrial Septal Defect
    Left Axis Deviation

    In Primum defects left axis deviation is seen in most patients with an axis of -30 degrees and very few patients have right axis deviation.[6]

  • Atrial Septal Defect
    Left Axis Deviation

    When an ostium primum atrial defect is present, the ECG reveals left axis deviation. … In ostium primum ASD, it shows left axis deviation and right bundle branch block. … In sinus venosus ASD, it shows left axis deviation and a negative P wave in lead III.[7] [8]

Further symptoms

Similar symptoms


  1. Feline Hypertrophic Cardiomyopathy, http://maxshouse.com/hypertrophic_cardiomyopathy.htm
  2. Hypertrophic Cardiomyopathy. HCM information page, http://patient.info/doctor/hypertrophic-cardiom…
  3. Endocardial Cushion Defect, http://www.echocardiology.org/ECD.htm
  4. Atrioventricular Defect (AVSD), http://www.utmb.edu/pedi_ed/core/cardiology/pag…
  5. Tricuspid atresia, https://en.wikipedia.org/wiki/Tricuspid_atresia
  6. Ostium primum atrial septal defect, https://en.wikipedia.org/wiki/Ostium_primum_atr…
  7. Atrial Septal Defect (ASD) ECG Review - Criteria and Examples, http://www.healio.com/cardiology/learn-the-hear…
  8. Atrial Septal Defect, https://www.symptoma.com/en/info/atrial-septal-defect