Cardiac Section

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Author:
Anonymous
ID:
128174
Filename:
Cardiac Section
Updated:
2012-01-16 13:47:38
Tags:
cardiac nursing CAD
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Description:
for exam one
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  1. PVC stands for
    Premature Ventricular Contraction.
  2. PVC definition
    Three or more successive PVCs are called nonsustained ventricular tachycardia.

    These can be common
  3. Atrial Flutter
    Rapid atrial depolarization
  4. PAC stands for
    premature atrial contraction
  5. PACs are
    when atrium fires impulse before the next one comes, and is usually followed by a pause. There are rarely other symptoms associated with this. Can be caused by stress or inflammation
  6. SVT stands for
    Supraventrical Tachycardia
  7. SVT is
    • may be normal
    • P waves may not be visible
    • PSVT = intermittent
  8. Atrial Fibrillation
    • The most common dysrhthmia
    • Atrium is depolarized randomly
  9. With AFib, pt is at risk for
    pulmonary embolis
  10. Normal QRS Duration
    0.04-0.1
  11. Normal PR interval
    0.12-0.2
  12. Analyzing P waves
    • Are They present?
    • DO they occur regularly?
    • Is there one P wave for each QRS?
    • Are they smooth, rounded, and upright?
    • Are they all similar looking?
  13. ECG rhythm analysis
    • Determine HR
    • Determine Heart Rhythm
    • Analyze P waves
    • Measure PR interval
    • Measure QRS duration
    • interpret rhythm
  14. Sinus arrhythmia
    • pretty normal
    • results from changes in intrathoracic pressure while breathing
    • PP and RR intervals vary by more than 0.12 seconds
  15. Memory Method
    • 300
    • 150
    • 100
    • 75
    • 60
    • 50
    • 43
    • 37
    • 33
    • 30
  16. QT Interval
    • total time for ventricals to depolarize and repolarize
    • QRS-Twave
  17. U wave
    late ventricular repolarization
  18. T wave
    represents ventricular repolarization
  19. ST segment
    early ventricular repolarization
  20. J point
    represents the junction where QRS ends and ST starts
  21. Abnormal Q wave
    represents necrosis
  22. Q wave
    ventricular septal depolarization
  23. QRS complex
    ventricular depolarization
  24. PR interval
    • measured from P wave to end of PR segment
    • normally measures 0.12 to 0.2 seconds
  25. PR segment
    • isoel line
    • when impulse is going through AV node
  26. p wave
    atrial depolarization

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