Patent ID: 8457707
Filing Date: 2013-06-04
Classification: A61B,G16H

Abstract:
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.