Method for generating a signal corresponding to the respiration

Details Method for generating a signal corresponding to the respiration Method for generating a signal corresponding to the respiration

1993-08-23

1994-10-18

Pfaffle, K. M.

Surgery

Truss

Pad

128734, 607 9, 607 20, A61B 50205

Patent

active

053558944

ABSTRACT:
For generating a signal corresponding to the respiration volume per unit of time of a patient, a signal component correlated with the respiration is filtered out of a measured impedance signal acquired in the region of the heart of the patient, and the zero-axis crossings of this signal component are detected and the maximum values respectively arising in between two successive pairs of zero-axis crossings are identified in terms of amplitude. These maxima are added during a prescribed time interval to form a value corresponding to the respiration volume per unit of time.

REFERENCES:
patent: 4733667 (1988-03-01), Olive et al.
patent: 4901725 (1990-02-01), Nappholz et al.
patent: 5044365 (1991-09-01), Webb et al.
patent: 5137019 (1992-08-01), Pederson et al.
patent: 5197467 (1993-03-01), Steinhaus et al.
patent: 5201808 (1993-04-01), Steinhaus et al.
"Methods of Filtering the Heart-Beat Artefact From the Breathing Waveform of Infants Obtained by Impedance Pneumography," Wilson et al., Med. & Biol. Eng. & Comp., vol. 20, No. 3, May 1992, pp. 293-298.

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