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2. Right axis deviation - Wikipedia

   en.wikipedia.org/wiki/Right_axis_deviation

   If lead b is positive, the electrical heart axis can be estimated to lie within the quadrant between axis of lead a and lead b. A simple tool to quickly identify axis deviation (Figure 3) is the popular mnemonic; Reaching for Right Axis Deviation and Leaving for Left Axis Deviation. This refers to the appearance of leads I and II.

3. 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 ...

4. 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°.

5. Vectorcardiography - Wikipedia

   en.wikipedia.org/wiki/Vectorcardiography

   Independently, the SA was a stronger risk indicator of cardiac mortality compared to the other cardiovascular and ECG risk factors analyzed. [11] The Women's Health Initiative study concluded that a wide SA was the strongest predictor for incident coronary heart failure risk and a dominant risk factor for all cause mortality compared to several ...

6. QRS complex - Wikipedia

   en.wikipedia.org/wiki/QRS_complex

   Schematic representation of a normal sinus rhythm ECG wave. Diagram showing how the polarity of the QRS complex in leads I, II, and III can be used to estimate the heart's electrical axis in the frontal plane. The QRS complex is the combination of three of the graphical deflections seen on a typical electrocardiogram (ECG or EKG). It is usually ...

7. Electrocardiography - Wikipedia

   en.wikipedia.org/wiki/Electrocardiography

   Electrocardiography is the process of producing an electrocardiogram (ECG or EKG [a]), a recording of the heart's electrical activity through repeated cardiac cycles. [4] It is an electrogram of the heart which is a graph of voltage versus time of the electrical activity of the heart [ 5 ] using electrodes placed on the skin.

8. Automated ECG interpretation - Wikipedia

   en.wikipedia.org/wiki/Automated_ECG_interpretation

   Automated ECG interpretation is the use of artificial intelligence and pattern recognition software and knowledge bases to carry out automatically the interpretation, test reporting, and computer-aided diagnosis of electrocardiogram tracings obtained usually from a patient.

9. Wiggers diagram - Wikipedia

   en.wikipedia.org/wiki/Wiggers_diagram

   A Wiggers diagram, named after its developer, Carl Wiggers, is a unique diagram that has been used in teaching cardiac physiology for more than a century. [1] [2] In the Wiggers diagram, the X-axis is used to plot time subdivided into the cardiac phases, while the Y-axis typically contains the following on a single grid: Blood pressure. Aortic ...