Objective 2 and 3.txt

  1. Atrial depolarization
    P wave
  2. Ventricular depolarization
    QRS complex
  3. Ventricular repolarization
    T wave
  4. Depolarization
    when normally negative charged cells in the heart develop a positive charge; electrical activation of cell caused by influx of NA into cell while K exits cell
  5. When Q wave is abnormally present
    it represents myocardial necrosis
  6. U wave
    late ventricular repolarization
  7. QT interval
    total time required for ventricular depolarization and repolarization
  8. Repolarization
    reentry of K into cell while Na exits
  9. PR segment
    time required for the impulse to travel through the AV node where it is delayed and through the bundle of His, bundle branches and Purkinje fibers just before vent depolar
  10. PR interval
    time required for atrial depolar as well as impulse through the conduction system and Purkinje fiber network
  11. 12 lead EKG
    12 leads (views) of the heartÂ’s electrical activity. Six are limb leads-placed on four extremities in the frontal plane. Remaining are placed on the chest (precordial) in the horizontal place.
  12. The difference between a rhythm strip and a 12 lead EKG is that a rhythm strip records the same lead or leads all the way across the EKG paper. A 12 lead EKG records information from all 12 leads across the EKG paper divided into short, 2.5 second periods so that all 12 leads can fit on one page. Rhythm strips are better for evaluation of the rate and rhythm and 12 lead are better for determination of electrical axis, hypertrophy and assessing signs of ischemia and infarction.
  13. Continuous monitoring
    usually tele or ICU
  14. Rhythm analysis
    determine rhythm, detect dysrhythmias, identify possible causes, etiology and effect
  15. Steps to interpreting a rhythm strip
    HR, rhythm, P waves, PR interval, QRS duration, interpret rhythm
  16. Bradycardia med
    atropine and isoproterenol
  17. A fib, SVT or vtac
    amiodarone, adenosine, verapamil
  18. Vtach without pulse or vfib
    amiodarone, lidocaine and epinephrine
  19. Risk for development of a dysrhythmia
    Metaoblic alkalosis, COPD and stent placement
  20. A client who is to undergo cardioversion needs to be on anticoagulant therapy 4-6 weeks prior to procedure
  21. What should be documented after defib
    EKG rhythm, energy settings, condition of skin where electrodes were
  22. If heart rate is 46, what might be used for this client
    pacemaker insertion
Card Set
Objective 2 and 3.txt
Objective 2 and 3