Cardiac output monitor using fuzzy logic blood pressure analysis

Details Cardiac output monitor using fuzzy logic blood pressure analysis Cardiac output monitor using fuzzy logic blood pressure analysis

1998-02-06

1999-12-28

O'Connor, Cary

Surgery

Diagnostic testing

Cardiovascular

128920, 600300, A61N 500

Patent

active

060074914

ABSTRACT:
A method of monitoring cardiac output. The method uses a blood pressure waveform as input. The waveform is digitized and various blood pressure features are extracted. The features are used as inputs to a fuzzy logic model, where each input is fuzzified by determining its degree of confidence as a member of one or more fuzzy membership regions. A rule base is applied to the defuzzified inputs to obtain a fuzzy stroke volume index. This output is defuzzied and used to calculate cardiac output.

REFERENCES:
patent: 5390679 (1995-02-01), Martin
patent: 5685316 (1997-11-01), Schookin et al.
patent: 5797850 (1998-08-01), Archibald et al.

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