1 / 20

Cardiac Catheterisation

Cardiac Catheterisation. Lancashire & South Cumbria Cardiac Network. Involves the introduction of hollow shaped plastic tubes into the chambers of the heart and surrounding vessels Under x-ray control Aim – to diagnose & treat heart disease. Procedures.

susane
Download Presentation

Cardiac Catheterisation

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Cardiac Catheterisation Lancashire & South Cumbria Cardiac Network

  2. Involves the introduction of hollow shaped plastic tubes into the chambers of the heart and surrounding vessels • Under x-ray control • Aim – to diagnose & treat heart disease

  3. Procedures • Angiography – injection radio-opaque dye to establish blood flow, contractility and establish anatomical stenosis and abnormalities • Intra-cardiac pressure recordings – to establish pressure status within individual chambers/vessels • Oximetry – to establish level of oxygen saturation across chambers/vessels • Cardiac output measurements – to establish cardiac output and calculation of shunts and vascular resistances

  4. Techniques - LHC • Sones • Brachial artery ‘cut-down’ • Bed rest not required • Judkins • Seldinger method • Vessel/nerve damage less likely • Femoral or radial

  5. Technicians Role • What are the common duties carried out by the technician for diagnostic/intervention procedures within the catheter laboratory?

  6. Catheter definitions • Catheter • French size • Lumen • Length • Guide wire • Bolus • Flow • Radio-opaque • Radio-translucent

  7. Catheter characteristics • List as many characteristics as possible

  8. Instrumentation system • Catheter • Pressure line • Transducer • Pressure monitoring system

  9. System criteria • Stability • Sensitivity • Adequate frequency response

  10. Pressure line & transducer kit • Heparinised 0.9% saline • Maintain sterility • fluid filled – air free • Zero & calibration • Prevents backflow of blood

  11. Transducer • Mechanical to electrical • Strain gauge – wheatstone bridge technology • Strain defined as fractional change in length RESISTANCE  LENGTH

  12. Pressure Vent to air

  13. Electrical circuit R1 R3 R4 R2 V Resistances are equal – no current flows R1 & R2  and R3 & R4  - current flows

  14. Arrangement of the equipment • Name as many reference points as possible

  15. Pressure ranges • Left sided pressures what range? • Right sided pressures what range?

  16. calibration • Ensure scale and linked sensitivity is correct calibration zero INCORRECT ADJUSTED

  17. Damping • Reduction in amplitude & frequency of pressure waveform UNDERDAMPED OVERDAMPED CORRECT

  18. Causes of Damping • List the reasons for damping during cardiac catheterisation • (1) • (2) • (3)

  19. Overshoot & Sensitivity • Caused by compliance characteristics of the pressure system • Inclusion of ROSE will eliminate overshoot • ROSE ?

  20. ANY QUESTIONS?

More Related