Non-invasive monitoring of respiratory rate, heart rate and apnea
First Claim
1. A method for estimating a respiratory rate of a patient comprising the steps of:
- receiving respiratory sound data representing respiratory sounds of the patient;
deriving a plurality of respiratory rates from said respiratory sound data with a processor using a plurality of different respiratory rate estimating methods, wherein the plurality of different respiratory rate estimating methods comprises a plurality of envelope related methods, at least one of the envelope related methods being performed in a time domain and at least another of the envelope methods being performed in a frequency domain; and
applying a heuristic to said plurality of derived respiratory rates, said heuristic selecting one of said derived respiratory rates to output for display to a clinician;
wherein said selected respiratory rate is the estimated respiratory rate.
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Abstract
A method and apparatus for estimating a respiratory rate of a patient. The method comprises the steps of recording respiratory sounds of the patient, deriving a plurality of respiratory rates from the recorded sounds using a plurality of respiratory rate estimating methods and applying a heuristic to the plurality of derived respiratory rates, the heuristic selecting one of the derived respiratory rates. The selected respiratory rate is the estimated respiratory rate. The apparatus comprises at least one sensor recording respiratory sounds of the patient, a plurality of respiratory rate processors, each of the processors comprising a respiratory rate calculating method, a heuristic means for selecting one of the calculated respiratory rates and a display means for displaying the selected respiratory as the estimated respiratory rate.
909 Citations
37 Claims
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1. A method for estimating a respiratory rate of a patient comprising the steps of:
- receiving respiratory sound data representing respiratory sounds of the patient;
deriving a plurality of respiratory rates from said respiratory sound data with a processor using a plurality of different respiratory rate estimating methods, wherein the plurality of different respiratory rate estimating methods comprises a plurality of envelope related methods, at least one of the envelope related methods being performed in a time domain and at least another of the envelope methods being performed in a frequency domain; and
applying a heuristic to said plurality of derived respiratory rates, said heuristic selecting one of said derived respiratory rates to output for display to a clinician;
wherein said selected respiratory rate is the estimated respiratory rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
- receiving respiratory sound data representing respiratory sounds of the patient;
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36. An apparatus for providing an estimated respiratory rate of a patient, the apparatus comprising:
one or more processors, the one or more processors configured to; receive respiratory sound data representing respiratory sounds of a patient; calculate respiratory rates based on the respiratory sound data using a plurality of envelope related methods, at least one of the envelope related methods comprising a time domain method and at least another of the envelope related methods comprising a frequency domain method; and select one of said calculated respiratory rates to output as an estimated respiratory rate for display to a clinician. - View Dependent Claims (37)
Specification