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02.09 12 Lead EKG- Leads 1, 2, 3, aVL, and aVF for CCRN Review

02.09 12 Lead EKG- Leads 1, 2, 3, aVL, and aVF for CCRN Review

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Laura Gasparis Vonfrolio

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Outline

Nursing Points

General

12 Lead EKG: Leads 1, 2, 3, aVL, & aVF
1. “+” or “-” regarding electrical charge of heart
  1. Positive lead = left arm, left leg
  2. Negative lead = arm
2. Lead monitoring
  1. Lead 1, aVL -> view inferior wall of heart
3. To read a hemi-block
  1. Electrical current goes through L bundle first -> through ventricular anterior septal wall -> then through right bundle
  2. ‘Deviations’ of the direction of electrical current
    1. Right axis deviation = S wave dips down far in Lead 1 and aVL
    2. Left axis deviation = S wave dips down far in Lead 2, 3, and aVF

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Emergency Care of the Cardiac Patient
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Emergency Care of the Respiratory Patient
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Shock
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EENT Disorders
Central Nervous System Disorders – Brain
Communication
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Cardiovascular

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