Phoenix Ambulatory Blood Pressure Monitor Project
11/11/2007 Meeting Notes


Attendees

Discussion

* Larry Beaty: has been wearing the A&D Sphygmomanometer. El asked if it was accurate. Larry said it produces both a Korotkoff and acoustic measurement and they may differ by 5-8 mmHg. El asked how they satisfy the ANSI requirements. Bob asked if they satisfy the requirements. If they don't make claims, they do not have requirements. Chris noted that the accuracy standards specified the patient was a rest for 10 minutes.
* Met Resty Namata (MS candidate in bioinformatics) and Maria Metty (BS candidate in business, considering medical school).

 

Requirements Layer-by-Layer by Chris Adams

Sensors
* Phenomena
- DPB
- SBP
- HR
- Blood Flow
- Physical Activity

What is a description of what would measure this?
* Measure the change in the size of the wrist, caused by change in the size of artery. Two signals from Piezoelectric to combine to an A-to-D convert, and clock. Store the D signal that is stored with timestamp into a chip register (circular FIFO), loosely called a processor. This provides a sensor that produces blood pressure.

Result: we described a framework for understanding the relationship between sensors and measurement, and a problem with modeling approach (multiple centers and simultaneously perform architecture and design).

 

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