1 / 27

Peripheral Edema Sensor

Peripheral Edema Sensor. Jovan Popovich Mike Moeller Biomedical Engineering. Project Goal. To develop a diagnostic method for testing peripheral edema using impedance analysis methods. Presentation Overview. Background on Edema Current Assessment Technique Proposal of Impedance Analysis

nysa
Download Presentation

Peripheral Edema Sensor

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. Peripheral Edema Sensor Jovan Popovich Mike Moeller Biomedical Engineering

  2. Project Goal To develop a diagnostic method for testing peripheral edema using impedance analysis methods

  3. Presentation Overview • Background on Edema • Current Assessment Technique • Proposal of Impedance Analysis • Background of Technique • Related Products/methods • Overview of Current Project • Testing Methods and Considerations • Challenges • Future Work

  4. Edema Edema: excess fluid build-up in the interstitial tissue from homeostatic imbalance Affects 4.4 Million People in the United States

  5. Causes of Edema • Congestive Heart Failure • Right Side • Kidney disease/damage • Loss of protein • High salt concentration • Liver disease • Drop in albumin level • Blood Clots and Tumors

  6. Effects of Edema • Poor blood circulation • Increased local pressure • Loss of vessel elasticity • Painful Swelling • Problems with Constricting Clothes/Shoes • Difficulty in Walking

  7. Current Medical Assessment of Edema • With no diagnostic device for tracking edema levels • Currently it is viewed only as an all-or-nothing symptom

  8. Project Goal: Continuous Physiological Monitor Provides Physician with a better insight as to when and why a patient’s symptoms are occurring • Need for a Chronic Edema Sensor • Indication of type of disorder • Reveal severity of problem • Reveal triggers and possible causes • Show what effects medication has http://www.data-input.de/media/elektroden-anleitung-fuss.jpg

  9. Impedance Analysis • Cell/Tissue have unique Dielectric properties • Frequency dependent response • Technique has been used for Biosensing Applications • Potential for miniaturization and portable devices

  10. Body Composition Monitor • Determines: • Total body fat • Skeletal muscle • Resting metabolism • Body mass index • Uses full body analysis instead of localized tests

  11. Measurement Setup • Two Electrode Technique • LCR Meter: integrates both characteristics • Four Electrode Technique • Requires advanced measurement tool

  12. Impedance Analysis Equipment • LCR Meter for preliminary testing • Measurements: 100Hz, 120Hz, 1kHz, 10kHz, 100kHz • Yields resistance values (ohms), and phase angle • Impedance Analyzer • Measurement signals: up to MHz range • Yields tabulated impedance and phase values • Also can show temperature (ohmic heating)

  13. Electrodes • Skin Impedance • Precise impedance characteristics: Zskin-electrode = Zelectr. + Zcont. + Zskin • Location • Good Contact • Electrode Material

  14. Overall Testing Considerations • Electrode Characteristics • Tissue Analogue Testing • Efficacy/Reproducibility of data • Trial Testing

  15. Anticipated Challenges • Correct Estimation of skin contact impedance • Interpreting and correlating data to Edema symptoms • Sensitivity • Finding participants for clinical trials

  16. Material Costs

  17. Research Schedule

  18. Project Summary • Bioimpedance analysis to measure peripheral edema • Develop reliable, repeatable testing method • Electrode Design • Signal • Time Course • Eventually Consideration: portable sensor • Data used for feedback on patient symptom severity and patient/drug response

  19. Research Personnel Advisors/Contacts Prof. Mansoor Nasir • Research Advisor Prof. Kenneth Cook • Tech. consultant Researchers Michael Moeller • Research mech. design & placement • Data Collection • Report: background writing Jovan Popovich • Research further in BIA • Data Interpretation • Report: data plotting, discussion

  20. References • http://www-rohan.sdsu.edu/~ens304l/electrodes.jpg • http://www.medicalnewstoday.com/articles/159111.php • http://www.med724.com/product-p/mmm-2231-pack.htm?site=google_base • http://www.medicinenet.com/edema/page5.htm • http://www.skintact.com/46.0.html

  21. Questions

  22. Questions

  23. Questions

  24. Questions

  25. Questions

  26. Consideration: Sensor Device

  27. Measurement Setup

More Related