Pacing System Components

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Author:
jordan1128
ID:
238257
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Pacing System Components
Updated:
2013-10-02 12:47:26
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  1. 4 components of pacing system
    • -programmer¬†
    • -pulse generator
    • -lead
    • -patients heart
  2. Are programmers internchangebale
    FUCK NO!
  3. Coil that surrounds pacemaker
    telemetry coil
  4. ERT
    • Elective Replacement Time
    • (3 to 6 months of battery life)
  5. EOL
    End of Life/serivce
  6. Reed Switch
    Put maganet over and you can figure out battery statys
  7. Battery used today
    Lithium-iodie battery
  8. QMR
    switching to QMR batteries for wireless telemetry
  9. As battery ages= battery impendence
    goes up
  10. Battery Capacity measured in?
    Amp hour capcity
  11. Hermitically-Sealed Case
    Maintains a hermetic seal
  12. Where does Atrial Lead go?
    Atrial appanedge
  13. ventricle lead
    rv apex
  14. Top port is for
    atrial lead
  15. 5 basic components of lead system
    • -lead body
    • -fixation mechanism
    • -electrodes
    • -connector
    • -insulation
  16. 3 types of lead material
    • polyurethane
    • silicone rubber
    • optim
  17. 5 things that affect electrode performance
    • materials
    • polarization
    • impedance
    • pacing thresholds
    • steroids
  18. Polarization of leads
    every time you pace you will attracts ions of oppositve charge
  19. Impedence
    the sum of all forces opposing the flow of current in a circuit
  20. Impedance is measured in?

    Pacing lead impedance range?
    Ohms

    300-1800
  21. factors that influence impedance
    • -resistance of condutor coils
    • -tissue between anode and cathode
    • -electrode/myocardial interface
    • -electrode surface area
    • -size and shape of electrode
  22. High impedance lead
    • drain less current
    • device last longer

    but....more polarization
  23. low lead polarization
    low polarization so better
  24. Pacing thresholds
    minimum amount of electrical energy required to pace heart

    low threshold required less battery energy!
  25. Acute-to-chronic threshold increase
    -inflammation around newly implanted lead will increase threshold about 5 times
  26. capture
    pacemaker pulse leading to depolarization
  27. Doesn't capture
    loss of capture/non-capture
  28. Threshold stablizes after ___ and at about _____
    • 2 months
    • 2 times
  29. Importance of Steroids
    lower & shorten actue-to chornic threshold change
  30. Co-Axial Conductor Design
    two coductor wires in bipolar lead
  31. Co-Radial Conductor Design
    • intertwined
    • smaller leads
  32. Voluntary Standard #1
    attempted to impose a standrd connector size across all companies
  33. IS-1
    International Standard No.1 for leads
  34. IS-1 Compatible Header
    for leads without sealing rings
  35. 3 steps for lead inseration into header
    • Push
    • Tighten
    • Tug
  36. Sweet tip lead
    THE OLE SWEET TIP!!

    disolveable case
  37. 3 characterisitics of unipolar system
    • large pacing spikes
    • small diameter
    • committed polarity
  38. 4 characterisitcs of bipolar system
    • small pacing spikes
    • less flexable¬†
    • no muscle stimulatin
    • no myopotential inhibition

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