enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Left ventricular hypertrophy - Wikipedia

    en.wikipedia.org/wiki/Left_ventricular_hypertrophy

    Left ventricular mass can be further estimated based on geometric assumptions of ventricular shape using the measured wall thickness and internal diameter. [7] Average thickness of the left ventricle, with numbers given as 95% prediction interval for the short axis images at the mid-cavity level are: [8] Women: 4 – 8 mm; Men: 5 – 9 mm

  3. Left axis deviation - Wikipedia

    en.wikipedia.org/wiki/Left_axis_deviation

    The hexaxial reference system is a diagram that is used to determine the heart's electrical axis in the frontal plane.. In electrocardiography, left axis deviation (LAD) is a condition wherein the mean electrical axis of ventricular contraction of the heart lies in a frontal plane direction between −30° and −90°.

  4. Premature ventricular contraction - Wikipedia

    en.wikipedia.org/wiki/Premature_ventricular...

    Premature ventricular contraction in an ECG (arrows) of a dog, caused by dilated cardiomyopathy. Premature ventricular contractions occur in healthy persons of any age, but are more prevalent in the elderly and in men. [3] In a very significant proportion of people they occur spontaneously with no known cause. [citation needed]

  5. Dilated cardiomyopathy - Wikipedia

    en.wikipedia.org/wiki/Dilated_cardiomyopathy

    When left bundle-branch block (LBBB) is accompanied by right axis deviation (RAD), the rare combination is considered to be highly suggestive of dilated or congestive cardiomyopathy. [29] [30] Echocardiogram shows left ventricular dilatation with normal or thinned walls and reduced ejection fraction.

  6. Hexaxial reference system - Wikipedia

    en.wikipedia.org/wiki/Hexaxial_reference_system

    The hexaxial reference system is a diagram that is used to determine the heart's electrical axis in the frontal plane. The hexaxial reference system, better known as the Cabrera system, is a convention to present the extremity leads of the 12 lead electrocardiogram, [1] that provides an illustrative logical sequence that helps interpretation of the ECG, especially to determine the heart's ...

  7. Mitral regurgitation - Wikipedia

    en.wikipedia.org/wiki/Mitral_regurgitation

    Animation of a mitral valve regurgitation in a dog, left apical view An echocardiogram is commonly used to confirm the diagnosis of MR. [ 16 ] Color doppler flow on the transthoracic echocardiogram (TTE) will reveal a jet of blood flowing from the left ventricle into the left atrium during ventricular systole .

  8. Left bundle branch block - Wikipedia

    en.wikipedia.org/wiki/Left_bundle_branch_block

    The axis may be normal but may be deviated to the left or right. [4] There are also partial blocks of the left bundle branch: "left anterior fascicular block" (LAFB) [5] and a "left posterior fascicular block" (LPFB). [5] This refers to the block after the bifurcation of the left bundle branch.

  9. Electrical alternans - Wikipedia

    en.wikipedia.org/wiki/Electrical_alternans

    Electrical alternans is an electrocardiographic phenomenon of alternation of QRS complex amplitude or axis between beats and a possible wandering base-line. It can be seen in cardiac tamponade and severe pericardial effusion and is thought to be related to changes in the ventricular electrical axis due to fluid in the pericardium, as the heart essentially wobbles in the fluid filled ...