Possible Causes for Left Axis Deviation in USA

  • Atrial Septal Defect
    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.[1]

  • Left Anterior Fascicular Block
    Right Axis Deviation Left Axis Deviation

    axis deviation. […] The major clinical signs which indicate the occurrence of LAFB include: Left axis deviation under -60° Small Q, in leads I and aVL, and R waves in lead aVF, II, III (with […] These criteria are summed up as follows: Left axis deviation, which normally ranges between -45 and -90 degrees QRS duration appears normal or a little bit longer than normal[2]

  • Left Ventricular Hypertrophy
    Left Axis Deviation

    axis deviation and left ventricular strain and left atrial enlargement.  […] men) and 20 mm (women) Sokolow Lyon voltage: S in V1 and R in V5 or V6 = or > 35 mm R in AVL = or > to 11 mm There may be repolarization changes such as QRS prolongation, left[3]

  • Morbid Obesity
    Left Axis Deviation

    Morbid obesity or clinically severe obesity is a condition characterized by body mass index (BMI) over 40 kg/m2, and involves serious health consequences. Morbid obesity is associated with a number of comorbidities that enhance the risk of mortality. Weight problems with symptoms of associated complications are the…[4]

  • Chronic Obstructive Pulmonary Disease
    Right Axis Deviation Left Axis Deviation

    Symptoms and signs may include: Fatigue Dyspnea  Paroxysmal nocturnal dyspnea (PND) Chest tightness Wheezing Cough with sputum (mucoid and/or purulent) Fever Chest pain Workup consists of a detailed history, tests and physical examination. Laboratory Tests Complete blood count Arterial blood gases Serum…[5]

  • Left Ventricular Outflow Obstruction
    Left Axis Deviation
  • Hypertrophic Cardiomyopathy
    Left Axis Deviation

    Hypertrophic cardiomyopathy (HCM) is a genetic disorder characterized by left ventricular hypertrophy without an identifiable cause. Most patients have little or no disability and a normal life expectancy. Higher rates of morbidity or mortality are linked to the complications of the disorder, sudden cardiac death,…[6]

  • Congenital Aortic Valve Stenosis
    Left Axis Deviation

    Congenital aortic valve stenosis is the inborn obstruction of blood flow through the aortic valve, most often associated with abnormal valve morphology: aortic bicuspid or unicuspid valve. It can be associated with other cardiac malformations and the condition, in the majority of cases, becomes symptomatic sooner or…[7]

  • Endocardial Cushion Defect
    Right Axis Deviation Left Axis Deviation

    An endocardial cushion defect, also known as the atrioventricular septal defect, encompasses several congenital heart disease forms of abnormal atrioventricular septation and formation of a single atrioventricular valve. Cyanosis is principally seen in milder forms, whereas congestive heart failure and even death may…[8]

  • Ostium Primum Atrial Septal Defect
    Right Axis Deviation Left Axis Deviation

    The ostium primum atrial septal defect consists of the absence of the interatrial septum in the atrioventricular canal portion, which causes interatrial left to right shunting. The malformation may occur by itself or in association with an inlet ventricular septal defect, as part of an atrioventricular septal defect.…[9]

Further symptoms


  1. Atrial Septal Defect, Symptoma
  2. Left Anterior Fascicular Block, Symptoma
  3. Left Ventricular Hypertrophy, Symptoma
  4. Morbid Obesity, Symptoma
  5. Chronic Obstructive Pulmonary Disease, Symptoma
  6. Hypertrophic Cardiomyopathy, Symptoma
  7. Congenital Aortic Valve Stenosis, Symptoma
  8. Endocardial Cushion Defect, Symptoma
  9. Ostium Primum Atrial Septal Defect, Symptoma