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346 Possible Causes for Left Axis Deviation

  • 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] deviation is generally found in primum ASD, but an RSR pattern (M pattern) in V1 is characteristic.[ipfs.io] Each ECG showed persisting left axis deviation with no new conduction abnormalities.[circ.ahajournals.org]

  • 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]

  • Endocardial Cushion Defect

    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 septal defect[ncbi.nlm.nih.gov] 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[heart.bmj.com] 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]

  • 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]

  • 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]

  • 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]

  • Congenital 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]

  • Anomalies of Coronary Artery Origin

    His electrocardiogram revealed normal sinus rhythm at a rate of 80 beats/min, left axis deviation, left atrial abnormality, and T-wave inversion in lead V 6 .[read.nxtbook.com]

  • 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] Criteria Abnormal left axis deviation [3] (usually between –45 and –60 ) [4] qR pattern (small q, tall R) in the lateral limb leads I and aVL rS pattern (small r, deep S)[ipfs.io]

  • Hyperkalemia

    Left axis deviation. Absent P waves. Example 6 Hyperkalaemia: Sine wave appearance with severe hyperkalaemia (K 9.9 mEq/L). Example 7 Hyperkalaemia: Huge peaked T waves.[lifeinthefastlane.com]

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