Devices and methods for measuring pulsus paradoxus
First Claim
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1. A method for measuring pulsus paradoxus in a subject comprising:
- (i) collecting pulsatile cardiorespiratory data from said subject;
(ii) performing period amplitude analysis on said data;
(iii) performing power spectrum analysis on said data; and
(iv) combining the analyses of steps (ii) and (iii) to determine a measurement for pulsus paradoxus.
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Abstract
The invention relates to methods and devices for measuring pulsus paradoxus. The methods herein employ a combination of one or more forms of waveform analysis for the purpose of measuring pulsus paradoxus and diagnosing respiratory distress. The methods also combine measurements of pulsus paradoxus and physician assessments to diagnose respiratory distress. The methods also combine measurements of pulsus paradoxus and percentage oxygenated hemoglobin to diagnose respiratory distress. The devices of this invention employ pulse oximeters, arterial tonometers, finometers, or processors for the purpose of implementing the methods of the invention.
380 Citations
67 Claims
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1. A method for measuring pulsus paradoxus in a subject comprising:
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(i) collecting pulsatile cardiorespiratory data from said subject; (ii) performing period amplitude analysis on said data; (iii) performing power spectrum analysis on said data; and (iv) combining the analyses of steps (ii) and (iii) to determine a measurement for pulsus paradoxus. - 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, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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53. A method for measuring pulsus paradoxus in a subject comprising:
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(i) collecting pulsatile cardiorespiratory data from said subject; (ii) performing a first form of waveform analysis on said data; (iii) performing a second form of waveform analysis on said data; and (iv) combining the analyses of steps (ii) and (iii) to determine a measurement for pulsus paradoxus. - View Dependent Claims (54)
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55. A device for measuring pulsus paradoxus in a subject comprising:
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(i) an optical plethysmograph to collect pulsatile cardiorespiratory data from said subject; (ii) a processor to perform period amplitude analysis on said data; (iii) a processor to perform power spectrum analysis on said data; and (iv) a processor to combine the analyses of steps (ii) and (iii) to determine a measurement for pulsus paradoxus. - View Dependent Claims (56, 57, 66)
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58. A device for measuring pulsus paradoxus in a subject comprising:
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(i) an arterial tonometer to collect pulsatile cardiorespiratory data from said subject; (ii) a processor to perform period amplitude analysis on said data; (iii) a processor to perform power spectrum analysis on said data; and (iv) a processor to combine the analyses of steps (ii) and (iii) to determine a measurement for pulsus paradoxus. - View Dependent Claims (59, 60)
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61. A device for measuring pulsus paradoxus in a subject comprising:
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(i) a finometer to collect pulsatile cardiorespiratory data from said subject; (ii) a processor to perform period amplitude analysis on said data; (iii) a processor to perform power spectrum analysis on said data; and (iv) a processor to combine the analyses of steps (ii) and (iii) to determine a measurement for pulsus paradoxus. - View Dependent Claims (62, 63)
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64. A device for measuring respiratory distress in a subject comprising:
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(i) a optical plethysmograph to collect pulsatile cardiorespiratory data from said subject; (ii) a processor to calculate pulsus paradoxus from said data; (iii) a processor to calculate percentage oxygenated hemoglobin from said data; and (iv) a processor to combine the output of steps (ii) and (iii) to determine a measurement of respiratory distress. - View Dependent Claims (67)
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65. A method for measuring respiratory distress in a subject comprising:
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(i) collecting pulsatile cardiorespiratory data from said subject; (ii) estimating pulsus paradoxus using said data; (iii) estimating the percentage of hemoglobin (Hb) which is saturated with oxygen; and
;(iv) combining the analyses of steps (ii) and (iii) to determine a measurement of respiratory distress.
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Specification