Skip to Main content Skip to Navigation
Master Thesis

Impact of disturbances on invasive blood pressure signal recorded by TruWave® (Edwards) pressure-transducer and continuous cardiac output estimation by Vigileo® and MostCare® devices

Abstract : Introduction : Invasive arterial blood-pressure (BP) measurement requires a liquid-filled catheter-transducer system. Some phenomenon may disturb its mechanical properties such as bubbles in the tubing, catheter-bending, catheterobstruction, with consequently a disturbed BP waveform. This may alter not only BP measurement but also waveform-based continuous cardiac-output (CO) estimation by Vigileo® and MostCare® devices. Methods : A continuous invasive arterial BP signal was recorded in 20 patients after cardiac surgery. For each, 10 minutes of stable signal was selected and replayed on a test-bench to be recorded by Millar® sensor right into a dome, catheter and 1,50m fluid-filled tubing leading to TruWave® sensor and Vigileo® and MostCare® devices. Data (systolic, diastolic, mean, pulsatile pressure (PP), cardiac-output) were recorded without then with added disturbances (50μL bubbles, 100μL bubbles, catheter-obstruction, catheter-bending). Statistical analysis were performed using Friedman-test with post-hoc analysis if p-value under 1/1000. Results : While 50μL and 100μL bubbles and catheter-bending significantly altered BP signal recorded by TruWave® sensor, it is less obvious for catheter-obstruction. The experiments revealed 25,7% to 73,8% CO misestimations by Vigileo® depending on PP distortion and disturbance. CO estimation by MostCare®, even if undoubtedly altered when disturbances were applied to the system, did not seemed related to PP as there is no significant difference depending on PP distortion level. Conclusion : Everyday phenomena may disturb invasive BP signal and so waveform-based continuous CO estimation by Vigileo® and MostCare® devices.
Document type :
Master Thesis
Complete list of metadatas

Cited literature [25 references]  Display  Hide  Download

https://dumas.ccsd.cnrs.fr/dumas-01738136
Contributor : Jean-Hugues Morneau <>
Submitted on : Tuesday, March 20, 2018 - 11:31:24 AM
Last modification on : Wednesday, July 15, 2020 - 8:58:04 AM

File

2017GREA5022_grelier_julie(1)(...
Files produced by the author(s)

Identifiers

  • HAL Id : dumas-01738136, version 1

Citation

Julie Grelier. Impact of disturbances on invasive blood pressure signal recorded by TruWave® (Edwards) pressure-transducer and continuous cardiac output estimation by Vigileo® and MostCare® devices. Human health and pathology. 2017. ⟨dumas-01738136⟩

Share

Metrics

Record views

139

Files downloads

139