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Programmable Biofeedback Chest Exerciser

Programmable Biofeedback Chest Exerciser. Group 23: Eileen Bock, Lauren Cassell, Margaret Gipson, Laurie McAlexander Advisors: Douglas Sawyer, M.D., Ph.D. Paul King, Ph.D. What is Heart Failure?. Symptoms Shortness of breath Fatigue Chest pain Irregular heartbeat. Statistics

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Programmable Biofeedback Chest Exerciser

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  1. Programmable Biofeedback Chest Exerciser Group 23: Eileen Bock, Lauren Cassell, Margaret Gipson, Laurie McAlexander Advisors: Douglas Sawyer, M.D., Ph.D. Paul King, Ph.D.

  2. What is Heart Failure? • Symptoms • Shortness of breath • Fatigue • Chest pain • Irregular heartbeat • Statistics • Affects 5 million Americans • 550,000 new cases/year • 50% mortality rate within 4 years of diagnosis • Pathology • Heart doesn’t pump nutrients to tissues efficiently • Heart can’t develop pressure to eject needed stroke volume

  3. Treatments for Heart Failure • Medications • Diuretics: decrease blood volume • Vasodilators: dilate blood vessels • Nitrates: dilate blood vessels • Surgery • LVAD: acts as a pump • Heart transplant • Pacemaker: restores regular heartbeat • Exercise

  4. Using Exercise to Improve Symptoms • Benefits of exercise • Improves vascular function • Improves heart’s ability to contract • Reduces adrenaline levels • Improves muscle function • Reduces arrythmia risk • Benefits of deep breathing • Targets muscles of chest wall • As effective as other forms of exercise • Not as difficult

  5. Current Devices • Incentive Spirometer • Patient breathes in through mouthpiece to move piston. • Inconveniences: • Must be stationary during use • Large, awkward shape • Regimen: 10 times every hour while awake

  6. Current Devices • Pneumotrace • Measures respiration changes • Strain gauge transducer attached to belts • Inconveniences: • Must be lying down to use • Multiple belts and large measurement device

  7. Current Devices • RESPeRATE • Main purpose is to lower blood pressure • Inconveniences: • Must wear headphones • Must carry additional device • Regimen: No more than 15 minutes, 3 to 4 times a week

  8. Current Devices • VivoMetrics LifeShirt • Garment worn continuously • Constantly records respiration data • Inconveniences: • Large device • Uncomfortable to wear • Conspicuous

  9. Approach • Bridge • Differential amplifier • Strain gage • Voltage threshold detector

  10. Innovative Features • Portable – PDA • Discrete • Biofeedback system • Alerts patient when regimen is not being followed • Can be turned off for privacy • Allows physician to monitor progress

  11. January 15, 2007 Adjustable inelastic band Elastic section Strain gauge Voltage source DAQ system Motor for vibration January 29, 2007 Portable power source PDA for digital output Design

  12. Testing Part 2 • Previous 10 subjects will return and wear device for 3 hours • Subject survey Part 1 • 10 subjects wear the device for 1 hour each • Subject will perform breathing exercises and various common activities • Subject survey

  13. Testing Part 3 • Clinical testing: requires another IRB protocol submission • 2 control groups, 1 experimental group • Measure improvement of negative inspiratory force with incentive spirometer

  14. Resources • REST1 Impedance Pmeumograph by UFI. http://www.ufiservingscience.com/ DSRsp11.html • "How to Use an Incentive Spirometer". The Cleveland Clinic Foundation. <http://www.clevelandclinic.org/health/health-info/docs/0200/0239.asp?index= 4302& src=news>. • "Anaesthesia Products," Lifeline Systems Pvt. Ltd. <http://www.lifelinedelhi.com/ catheter-mount.html> • "RESPeRATE High Blood Pressure and Hypertension." Buyamag. <http://www.buyamag.com/high_blood_pressure_hypertension.php>. • "Smart textiles at Hightex 2005". Hightex 2005. <http://www.hightex2005.com/smart_textiles.htm>. • “Learning to Whistle”. November 2005. <http://learningtowhistle.blogspot.com/2005_11_01_learningtowhistle_archive.html>.

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