Phoenix Ambulatory Blood Pressure Monitor Project
9/14/2008 Meeting Notes



* Bob: Completed simulation and ABPM requirements.
* Chris: Chen paper, conversion algorithm depends on the sensor. Legal requirements,
* Larry: Power budget.
* Jim: Lab status, talked to Ned Mohen, advisor for student branch, The face of Phoenix, Mary Jo talked to Han, student branch officer and Mary Jo has 24x7 access. Mary Jo has been using Jim Holte's lab.
* Jerry: Topic, person object type



* Bob: Simulation
P=T^2*(Exp(-aT), P=1-T^2*(Exp(-aT))
from T in [0,40] seconds.
At typical blood cell is about 7 um inside, capillaries are 12 um.
As a comparison, the diffusion equation is P=e^(-aT).
These equations were chosen because the shape fits the experimental data. The intersections of the slope to the left of the peak and to the right of the peak provide an estimate of the T value of the peak.

Chris: Is calibration the way to determine the parameters?
Mary Jo: Yes, the Chen patent.

Mary Jo Rawson
From the Chen patent
P = a+b*ln(T)
where T=elapsed time between detecting pulse at two locations.
P=(P0 - c1)/ln(T0 + c2)


Two calibration tasks:
1) Calibrate to the person
2) Calibration to the device.
Matching the signal to the pressure.

A Clinical Information Minitopic by Gerry Werth

Person Object Fractal Types
Organizations Structure Hierarchies
* Organizations can contain Organizations.
* Organizations can be Fractal
Idea: from David Taylor, Object Oriented Technology, A Managers Guide.
* Multiple Hierarchies: Sales, Product, etc.
* It contains its own kind.
* Patterns

Is a Person Fractal?
* Real Persons are Not Fractal
* Special Medial Conditions
- Pregnancy
- Multiple Personality Syndrome
* Merging Multiple Instances
- Same Real Person, but Multiple Instances in Database.

If you are modeling people, you have to resolve these issues. Do you track entities or people?


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