Cardio

Card Set Information

Author:
Anonymous
ID:
100798
Filename:
Cardio
Updated:
2011-09-09 22:47:44
Tags:
cardio
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Description:
Intro to cardio 1
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  1. p wave
    –Atrial systole

    • –Signal from SA node spreads through
    • atria and depolarization begins

    • –Correlates with phase 0 of
    • myocardial action potential
  2. QRS complex
    • –Firing of AV node and ventricular
    • depolarization

    • –Atrial repolarization and
    • diastole

    • –Correlates with phase 1 of
    • myocardial action potential
  3. S-T segment
    –Ventricular systole

    –Contraction and ejection of blood

    • –Correlates with phase 2 of
    • myocardial action potential
  4. T wave
    –Ventricular repolarization

    • –Immediately before ventricular
    • diastole

    • –Correlates with phase 3 of
    • myocardial action potential
  5. ECG - the 5 waves
  6. Qt prolongation
    Genetic or acquired

    Caused by drugs and electrolyte abnormalities

    • –Antiarrhythmics, antipsychotics, antibiotics,
    • methadone

    –Hypokalemia, hypomagnesemia
  7. Angioplasty
    • Procedure to open blocked or narrowed coronary arteries
    • Done during the left cardiac catheterization
    • Balloon angioplasty alone or with stent placement
  8. CABG
    Coronary artery bypass grafting

    nOpen heart surgery

    nGrafts harvested from legs, chest, or arms

    nGrafts are used as a “detour” around the blocked portion of the coronary artery

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