首页>
外国专利>
Method and apparatus for discriminating between valid and artifactual pulse waveforms in pulse oximetry
Method and apparatus for discriminating between valid and artifactual pulse waveforms in pulse oximetry
展开▼
机译:在脉搏血氧饱和度测定法中区分有效和人为脉冲波形的方法和装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method and apparatus for use in pulse oximetry for discriminating between valid pulse waveforms and artifactual pulse waveforms. Systolic upstroke times for valid pulse waveforms are in a consistent, narrow range which varies only slightly from subject to subject. This narrow range, which may be defined empirically for each subject or established by a default setting applicable to all subjects, defines a predetermined range of systolic upstroke times indicative of valid pulse waveforms. The systolic upstroke time of each pulse waveform is compared against the predetermined range, and pulse waveforms are deemed valid only if their systolic upstroke times are within the predetermined range. Only arterial oxygen saturation levels based on validated pulse waveforms are accepted. The present invention may also be used to validate the heart rate and/or R-R, intervals of an ECG, and for discriminating between sleep and wakefulness in a monitored subject.
展开▼