False positive reduction in SPO2 atrial fibrillation detection using average heart rate and NIBP
First Claim
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1. A method of detecting atrial fibrillation in a human or animal subject, the method comprising:
- acquiring a plethysmographic waveform of a patient from a monitoring device over a period of time;
extracting a pulse from the plethysmographic waveform;
measuring a set of pulse intervals from the plethysmographic waveform;
measuring a set of features from the plethysmographic waveform;
analyzing the set of pulse intervals and the set of pulse features from the plethysmographic waveform to determine an atrial fibrillation state of the patient;
analyzing the pulse from the plethysmographic waveform, wherein analyzing the pulse from the plethysmographic waveform includes analyzing an average heart rate increase and analyzing an average heart rate variability;
acquiring and analyzing an NIBP pulse of the patient;
acquiring and analyzing a set of medical records of the patient; and
combining results from the pulse analysis, NIBP pulse analysis and the medical records analysis and confirming the atrial fibrillation state based on said results.
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Abstract
The method and system includes detecting atrial fibrillation in a patient by monitoring the blood oxygen saturation level over a period of time. The method and system produces a plethysmographic waveform from the monitored blood oxygen saturation level and analyzes the plethysmographic waveform and detected intervals and determines whether the patient is in atrial fibrillation. The method and system is preferably implemented in a software application and may be configured to report to the user on the current state of atrial fibrillation (AFIB) and a current trend.
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14 Claims
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1. A method of detecting atrial fibrillation in a human or animal subject, the method comprising:
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acquiring a plethysmographic waveform of a patient from a monitoring device over a period of time; extracting a pulse from the plethysmographic waveform; measuring a set of pulse intervals from the plethysmographic waveform; measuring a set of features from the plethysmographic waveform; analyzing the set of pulse intervals and the set of pulse features from the plethysmographic waveform to determine an atrial fibrillation state of the patient; analyzing the pulse from the plethysmographic waveform, wherein analyzing the pulse from the plethysmographic waveform includes analyzing an average heart rate increase and analyzing an average heart rate variability; acquiring and analyzing an NIBP pulse of the patient; acquiring and analyzing a set of medical records of the patient; and combining results from the pulse analysis, NIBP pulse analysis and the medical records analysis and confirming the atrial fibrillation state based on said results. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification