Principles of Biomedical Systems & Devices Principles of ... - Rowan

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Indirect Measurements Auscultatory Method PBS&D – Fall 2004 – Polikar http://engineering.rowan.edu/~polikar/CLASSES/ECE404 Most commonly used technique for listening sounds and/or indirectly (non-invasively) measuring blood pressure is the auscultatory method For NIBP, one listens to the Korotkoff sounds Typically less then 200 Hz, where human hearing is not very acute, time consuming, but remarkably accurate Brachial artery
Indirect Measurements Oscillometric Method PBS&D – Fall 2004 – Polikar http://engineering.rowan.edu/~polikar/CLASSES/ECE404 More commonly used in automated systems, less accurate The vibrations of the artery wall due to blood spurting are measured. Easy to obtain systolic and MABP, however, there is no clear indication of the diastolic pressure. Proprietary algorithms are used, instead
Page 1 and 2: Principles Principles of of Biomedi
Page 3 and 4: Blood Pressure PBS&D - Fall 2004 -
Page 5 and 6: Blood Pressure Classification PBS&D
Page 7 and 8: Extravascular Sensors PBS&D - Fall
Page 9 and 10: Blood Pressure Transducers PBS&D -
Page 11 and 12: Arterial/Venous BP transducers PBS&
Page 13 and 14: Dynamic Properties of the Measureme
Page 15 and 16: Bandwidth Requirements PBS&D - Fall
Page 17 and 18: Heart Sounds PBS&D - Fall 2004 - Po
Page 19: Heart Sounds PBS&D - Fall 2004 - Po
Page 23: Indirect Measurements Ultrasonic (D

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