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Hemoglobin display and patient treatment

  • US 8,571,619 B2
  • Filed: 05/19/2010
  • Issued: 10/29/2013
  • Est. Priority Date: 05/20/2009
  • Status: Active Grant
First Claim
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1. A patient monitoring system comprising:

  • a noninvasive sensor for emitting energy into a patient measurement site and detecting the energy attenuated by the patient measurement site;

    a processing board comprising;

    an instrument manager including a memory buffer; and

    a FFT module in communication with the instrument manager;

    wherein the instrument manager is adapted to determine a first plurality of total hemoglobin readings over a first time period and to determine a second plurality of total hemoglobin readings over a second time period using the attenuated energy detected by the sensor and to store the first and second plurality of total hemoglobin readings in the memory buffer;

    wherein the FFT module is adapted to perform a Fourier transform on the first and second plurality of total hemoglobin readings stored in the memory buffer and to determine a variation between of the outputs of the Fourier transform of the first and second total hemoglobin readings;

    and wherein the instrument manager is adapted to trigger an alarm if the variation reaches a certain threshold.

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