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281 Possible Causes for Left Axis Deviation

  • Left Anterior Fascicular Block

    The two current criteria for diagnosis of left anterior fascicular block (LAFB) were evaluated; they are marked left axis deviation (LAD) and a delay in the time of inscription[ncbi.nlm.nih.gov] It is caused by only the anterior half of the left bundle branch being defective. It is manifested on the ECG by left axis deviation.[en.wikipedia.org] It is caused by only the anterior half of the left bundle branch being defective. It is manifested on the ECG by left axis deviation .[ipfs.io]

  • Left Bundle Branch Block

    Left bundle branch block is usually associated with normal or left axis deviation.[ncbi.nlm.nih.gov] Left bundle branch block is usually associated with normal or left axis deviation. Rarely the ECG shows a LBBB with changing QRS morphology and changing axis deviation.[ncbi.nlm.nih.gov] An electrocardiogram revealed left axis deviation (LAD) in 1988 and slightly prolonged PQ intervals in 1993.[ncbi.nlm.nih.gov]

  • Ostium Primum Atrial Septal Defect

    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.[en.wikipedia.org] 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.[ipfs.io] Each ECG showed persisting left axis deviation with no new conduction abnormalities.[circ.ahajournals.org]

  • Endocardial Cushion Defect

    Abstract Three groups of patients are identified in the series of secumdum atrial septal defect with left axis deviation in an analysis of 910 patients of secundum atrial[ncbi.nlm.nih.gov] Left axis deviation Biventricular hypertrophy Chest X-ray Cardiomegaly with increased pulmonary vascular markings Treatment Close the atrial and/or ventricular septal defects[echocardiology.org] Complete: ostium primum atrial septal defect, canal type ventricular septal defect, common atrioventricular valve Incomplete: two separate atrioventricular valve orifices, left[echocardiology.org]

  • Left Ventricular Hypertrophy

    […] atrial involvement - terminal deflection of P wave in V1 is 1 box wide, and 1 box deep or more (3 points) Left axis deviation - QRS axis is -30 degrees or more negative ([merckmanuals.com] Left axis deviation.[lifeinthefastlane.com] […] wave in the limb leads greater than or equal to 20 mm; or S wave in V1 or V2 greater than or equal to 30 mm; or R wave in V5 or V6 greater than or equal to 30 mm (3 points) Left[merckmanuals.com]

  • Tricuspid Atresia

    CXR : decreased pulmonary blood flow and oligemic lung field ECG : left axis deviation PGE1 to maintain patent ductus arteriosus modified Blalock-Taussig shunt to maintain[en.wikipedia.org] Cardiomegaly and increased pulmonary vascular markings on the chest x-ray film and left axis deviation with left ventricular hypertrophy on the ECG are usually present.[ncbi.nlm.nih.gov] axis deviation due to hypoplastic right ventricle and enlarged left ventricle Pathognomic findings in setting of cyanosis: Tall p-waves (indicating atrial hyperplasia) Left[pedclerk.bsd.uchicago.edu]

  • Atrial Septal Defect

    When an ostium primum atrial defect is present, the ECG reveals left axis deviation.[healio.com] 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.[symptoma.com] Electrocardiography In ostium secundum ASD, the electrocardiogram shows right axis deviation and right bundle branch block.[symptoma.com]

  • Hypertrophic Cardiomyopathy

    ECG: Findings also may include right or left axis deviation, conduction abnormalities, sinus bradycardia with ectopic atrial rhythm and atrial enlargement.[patient.info] Common electrocardiographic findings include ST-T wave abnormalities and left ventricular hypertrophy, axis deviation (right or left), conduction abnormalities (P-R prolongation[symptoma.com]

  • Left Ventricular Dilatation

    Biatrial enlargement Left ventricular hypertrophy or biventricular enlargement Left bundle branch block ( RBBB can also occur). Left axis deviation.[lifeinthefastlane.com] There are some signs of left atrial enlargement — leftward deviation of the P wave axis (positive P waves in I and aVL, inverted in III and aVF) and prolongation of the terminal[lifeinthefastlane.com] Right axis deviation suggests associated right ventricular hypertrophy (i.e. biventricular enlargement ).[lifeinthefastlane.com]

  • Aortic Valve Stenosis

    References: [3] [7] [4] Diagnostics ECG Nonspecific for AS Signs of left ventricular hypertrophy (e.g., left axis deviation , positive Sokolow-Lyon index ) Chest x-ray Findings[amboss.com] […] of left ventricular hypertrophy , such as left ventricular enlargement and rounded heart apex, usually only in decompensated aortic stenosis, and possibly left atrial enlargement[amboss.com]

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