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Congenital heart disease monitor

  • US 8,457,707 B2
  • Filed: 09/19/2007
  • Issued: 06/04/2013
  • Est. Priority Date: 09/20/2006
  • Status: Active Grant
First Claim
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1. A congenital heart disease monitor comprising:

  • a sensor including a plurality of light emitters configured to emit optical radiation having a plurality of wavelengths into a tissue site and a detector configured to detect the optical radiation after attenuation by pulsatile blood flowing within the tissue site;

    a patient monitor configured to drive the sensor, receive a sensor signal corresponding to the detected optical radiation and to generate at least one of a visual output and an audio output responsive to the sensor signal; and

    a digital signal processor within the patient monitor programmed to derive an oxygen saturation from sensor data responsive to the sensor signal,wherein the oxygen saturation is measured first at a baseline tissue site using the sensor including the plurality of light emitters and the detector and second at a comparison tissue site using the same sensor including the same plurality of light emitters and detector,wherein the processor is configured to determine a difference in oxygen saturation measurements between the baseline tissue site and the comparison tissue site, the difference measured over a time interval so as to determine a trend, the processor further configured to compare a trend slope to a trend threshold; and

    wherein at least one of the outputs indicates a potential congenital heart disease condition according to results of the comparison.

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