Cardiovascular EMSP244

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Author:
ProStudent
ID:
255945
Filename:
Cardiovascular EMSP244
Updated:
2014-01-11 17:12:02
Tags:
cardiovascular
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Description:
EMTP Class
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  1. _______ blood returns to heart via ______  ______
    • deoxygenated
    • vena cava
  2. Deoxygenated blood pumped to ________ via _____  _____
    • lungs
    • pulmonary arteries
  3. _____ blood returns to _____ via pulmonary veins
    • oxygenated
    • heart
  4. Describe coronary circulation
    • left main coronary artery
    • right main coronary artery

    left main coronary artery divides into circumflex and left anterior descending
  5. Left anterior descending (LAD) supplies the _____ and _____  _____
    • septum
    • ventricular walls
  6. If LAD is blocked a majority of the _____  _____ will become ischemic
    left ventricle
  7. Right coronary artery (RCA) supplies the _____ _____ and _____  _____.  It also becomes the _____  _____  _____. RCA supplies blood to the _____ _____ and _____  _____.
    • right atrium
    • right ventricle
    • posterior descending artery
    • sinus node
    • atrioventricular node
  8. Coronary veins deposits blood directly into the _____  _____.
    right atria
  9. The cells of the heart have unique properties including _____  _____  and _____.
    • automaticity
    • excitability
    • contractility
  10. The strength of cardiac contraction
    • Inotropy
    • (i-no-im strong)
  11. Influence on the heart rate
    Chronotropy
  12. Dromotropy
    the excitability  or willingness of the hear to conduct an impulse
  13. Without _____  _____ the heart may lose up to 25% of cardiac output.
    atrial kick
  14. Action Potential

    Phase 4 _____
    Phase 0 _____ moves inside cell
    Phase 1 sodium moves _____ of the cell
    Phase 2 _____ moves in
    Phase 3 _____ moves _____
    • resting
    • sodium
    • out
    • calcium
    • calcium; out
  15. During this time the cells of the heart are not able to respond to stimulus
    absolute refractory period
  16. Explain relative refractory period
    A small period of time when the heart cells may respond to electrical stimulus if it is of sufficient size
  17. The sinus node is innervated by the _____ and _____ nervous system.
    • sympathetic
    • parasympathetic
  18. Slows down conduction to allow for atrial kick
    atrioventricular node
  19. Acts as secondary pacemaker for the heart
    atrioventricular node
  20. The primary pacemaker that controls the heart
    sinus node
  21. Capable of acting as the third and final pacemaker site
    purkinje network
  22. Traveling toward positive lead results in a _____ deflection

    Traveling away from positive lead results in a _____ deflection
    • upright (positive)
    • negative
  23. P-R interval
    • 0.12-0.2 seconds long
    • 3-5 small boxes
  24. p wave represents
    atrial depolarization
  25. qrs complex
    depolarization of right and left ventricles
  26. repolarization
    • resting
    • diastole
  27. depolarization
    • contracting
    • systole
  28. t wave
    repolarization of ventricles
  29. Five steps to reading ecg
    • 1. rate
    • 2. rhythm
    • 3. p waves (y or n)
    • 4. p-r interval
    • 5. qrs complex
  30. normal qrs complex
    • <0.12 seconds
    • < 3 small boxes
  31. If p-r interval is prolonged a _____ exists
    block
  32. Inferior infarction
    Leads II, III, aVF
  33. Septal infarction
    Leads V1, V2
  34. Anterior infarction
    Leads V3, V4
  35. Lateral infarction
    Leads I, aVL, V5, V6
  36. I-lateral     aVR            V1-septal   V4-anterior
    II-inferior   aVL-lateral   V2-septal   V5-lateral
    III- inferior aVF-inferior  V3-anterior V6-lateral
    LII-LI-SSAALL

    • Lateral-I
    • Inferior-II 
    • Inferior-III
    • ----------------------
    • Lateral-aVL
    • Inferior-aVF
    • -----------------------
    • Septal-V1
    • Septal-V2
    • Anterior-V3
    • Anterior-V4
    • Lateral-V5
    • Lateral-V6

    LII-LI-SSAALL

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