EKG

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Author:
ADDmeetsADHD
ID:
252155
Filename:
EKG
Updated:
2013-12-09 20:57:22
Tags:
heart rhythms
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Description:
breakdown
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  1. The most common abnormality in an ECG is
    tachycardia
  2. a site of electrical impulse formation outside the SA node is referred to as
    an ectopic focus
  3. describe normal electrical conduction pathway through the heart
    SA node--AV node--bundle of his--bundle branches--purkinje fibers
  4. when a cardiac cell is in a resting state it is
    fully polarized
  5. premature ventricular contraction originates in
    ventricle
  6. P wave abnormalities identified in a PJC rhythm may include
    • inverted
    • absent
    • retrograde
  7. a benign arrhythmia, associated with the influence of breathing pattern on the cardiac cycle, and characterized by slight slowing of the heart rate during expiration is
    sinus arrhythmia
  8. each small square (1mm) is equal to
    0.04
  9. forms of cardiac arrest include
    • ventricular fibrillation
    • pulseless electrical activity (PEA)
    • asystole
  10. the P wave in a PAC is
    normal
  11. a P wave in a PJC is
    abonormal
  12. the QRS in a PVC is ALWAYS
    wide
  13. Two PVCs in a row are called
    couplet
  14. the difference between PVC and a PAC is
    absence of P wave and width of QRS
  15. the characteristics pattern of atrial flutter is
    saw-toothed pattern
  16. only abnormality of 1st degree block is
    elongated PR interval >0.2 seconds
  17. wenckeback is characterized by
    PR interval gets longer with each complex and QRS is eventually dropped
  18. heart blocks
    are only managed if patient is symptomatic
  19. the definitive treatment for ventricular fibrillation is
    immediate defibrillation
  20. asystole
    must be confirmed in more than one lead

    has no waves or complexes

    may be defibrillated as last ditch effort
  21. 60 cycle interference may be caused by
    fluorescent lighting

    iv pumps

    electrically powered mechanical ventilators
  22. the only valid criteria for assessing perfusion of cardiac contractions are
    pulses and/or blood pressure
  23. escape ectopy is most commonly a result of
    a slow underlying rate
  24. the most ominous of ectopic beats is
    PVC
  25. multifocal PVCs are an indication of
    irritability in more that one area of the ventricle

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