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Identify the axis: Normal axis Right axis deviation Left axis deviation Extreme right axis deviation

Identify the axis: Normal axis Right axis deviation Left axis deviation Extreme right axis deviation

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Identify the axis:

Normal axis
Right axis deviation
Left axis deviation
Extreme right axis deviation
The image shows a standard 12-lead electrocardiogram (ECG) tracing. The leads I, II, and III, along with aVR, aVL, and aVF, are depicted on a graph with time represented on the horizontal axis and voltage on the vertical axis. Each small box on the graph typically represents 0.04 seconds horizontally and 0.1 mV vertically. - **Lead I**: Displays the electrical activity between the right arm and left arm electrodes. - **Lead II**: Shows electrical activity between the right arm and left leg electrodes. It is often used in cardiac monitoring due to its clear depiction of P waves. - **Lead III**: Illustrates the electrical activity between the left arm and left leg electrodes. - **aVR (augmented Vector Right)**: Measures the voltage from the heart to the right arm. - **aVL (augmented Vector Left)**: Measures the voltage from the heart to the left arm. - **aVF (augmented Vector Foot)**: Measures the voltage from the heart to the left leg. The tracing includes regular P waves, QRS complexes, and T waves, indicating electrical depolarization and repolarization of the atria and ventricles, which are vital for heart function assessment.
Transcribed Image Text:The image shows a standard 12-lead electrocardiogram (ECG) tracing. The leads I, II, and III, along with aVR, aVL, and aVF, are depicted on a graph with time represented on the horizontal axis and voltage on the vertical axis. Each small box on the graph typically represents 0.04 seconds horizontally and 0.1 mV vertically. - **Lead I**: Displays the electrical activity between the right arm and left arm electrodes. - **Lead II**: Shows electrical activity between the right arm and left leg electrodes. It is often used in cardiac monitoring due to its clear depiction of P waves. - **Lead III**: Illustrates the electrical activity between the left arm and left leg electrodes. - **aVR (augmented Vector Right)**: Measures the voltage from the heart to the right arm. - **aVL (augmented Vector Left)**: Measures the voltage from the heart to the left arm. - **aVF (augmented Vector Foot)**: Measures the voltage from the heart to the left leg. The tracing includes regular P waves, QRS complexes, and T waves, indicating electrical depolarization and repolarization of the atria and ventricles, which are vital for heart function assessment.
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