Ch02c - Chapter2,Part3 Cardiology Part3:12LeadECG Topics ECGRecording ECGLeads AxisDeviation TheNormal12LeadECG DiseaseFindings

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    Chapter 2, Part 3 Cardiology
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    Part 3: 12-Lead ECG  Monitoring and Interpretation
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    Topics Reviewing the Cardiac Conductive System ECG Recording ECG Leads Mean QRS Axis Determination Axis Deviation The Normal 12-Lead ECG Disease Findings Conduction Abnormalities Prehospital ECG Monitoring
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    Reviewing the Cardiac Conductive System SA Node Intranodal  Pathways AV Junction AV Fibers Bundle of His Septum Bundle  Branches Purkinje  System
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    ECG Recording  (1 of 4) ECG Recording Basic Principles An ECG is a recording of the heart’s electrical  activity. Electrical current moving toward the positive  electrode causes positive deflection. Electrical current moving away from the  positive electrode causes negative deflection. The stronger the current, the stronger (higher)  the deflection.
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    ECG Recording  (2 of 4)
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    ECG Recording  (3 of 4)
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    ECG Recording  (4 of 4)
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    ECG Leads  (1 of 8) ECG Leads Bipolar (two electrodes of opposite polarity {+ and  -} are used). Leads I, II, and II Unipolar or Augmented Limb leads (one +  electrode and the two other combined leads are  used) Leads aVR, aVL, and aVF Precordial (looks at the horizontal plane of the  heart, as well as the left ventricle and apex) V 1 , V 2 , V 3 , V 4 , V 5 , V 6
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    ECG Leads  (2 of 8)
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    ECG Leads  (3 of 8)
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    ECG Leads  (4 of 8) Bipolar Limb  Leads Lead I Lead II Lead III Einthoven’s  Triangle
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    ECG Leads  (5 of 8) Unipolar or  Augmented  Limb Leads Lead aVR Lead aVL Lead aVF
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    ECG Leads  (6 of 8) The Hexaxial and Semicircle Reference  Systems
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    ECG Leads  (7 of 8) The Hexaxial and Semicircle Reference  Systems
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    ECG Leads  (8 of 8) Precordial  Leads Lead V 1 Lead V 2 Lead V 3 Lead V 4 Lead V 5 Lead V 6
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This note was uploaded on 03/25/2010 for the course PAR 100 taught by Professor Alan during the Spring '10 term at Miramar College.

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Ch02c - Chapter2,Part3 Cardiology Part3:12LeadECG Topics ECGRecording ECGLeads AxisDeviation TheNormal12LeadECG DiseaseFindings

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