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Apparatus and method for identifying tidal breathing patterns

A technology of tidal breathing and equipment, applied in the field of equipment and methods for distinguishing tidal breathing patterns, capable of solving problems such as large amount of calculation

Inactive Publication Date: 2017-12-29
RESMED LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is computationally intensive and usually performed on a separate computer

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  • Apparatus and method for identifying tidal breathing patterns
  • Apparatus and method for identifying tidal breathing patterns
  • Apparatus and method for identifying tidal breathing patterns

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Embodiment Construction

[0038] Embodiments of the invention include systems, devices, classifiers, and / or methods of CSR event detection. Here, with reference to the accompanying drawings, especially Figure 1-7 The present invention will be described in detail.

[0039] CSR is a form of periodic breathing caused by unstable ventilatory control of the central nervous system. The respiratory pattern of patients with CSR is characterized by "ebb and flow" tidal volumes as respiration changes between recurrent episodes of apnea / hypopnea and hyperpnea. Recordings of nasal flow signals showed similar patterns to amplitude-modulated (AM) waves over a compressed time scale.

[0040] Tidal respiration (CSR) can be observed with direct pulmonary function tests such as nasal flow recordings or airway flow recordings. Due to the connection of the cardiac and pulmonary systems, CSR can also be identified by the oxygen saturation signal as alternating cycles of desaturation and resaturation. Therefore, the ox...

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Abstract

A method for a processor to detect the presence of tidal breathing from a respiratory signal includes acquiring data representative of the respiratory signal. The data is evaluated to detect apneic and / or hypopneic events. A cycle length histogram is determined based on the events, and a tidal breathing event is detected based on the cycle length histogram.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application 61 / 591,346, filed January 27, 2012, the disclosure of which is hereby incorporated by reference. technical field [0003] The present application relates to identifying abnormal breathing by analyzing physiological signals. The present application particularly relates to the identification of tidal respiration (Cheyne-Stokes respiration, CSR) by analyzing respiratory flow signals. The present application also relates to the training of classifiers capable of providing probability values ​​for the discrimination of CSRs. Background technique [0004] Tidal breathing (CSR) is a type of ebb and flow breathing experienced by patients during sleep. Typically, these patients have heart failure or brainstem disease (ie: stroke). The waxing and waning pattern may be caused by a combination of (i) excessive delay of the signal from the blood gas receptors ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M16/00A61B5/00
CPCA61B5/0816A61B5/0826A61B5/4818A61M16/0666A61M2016/0033A61M2230/205A61M16/0069A61M16/026A61M16/0003A61B5/087A61B5/091A61B5/7275A61B5/7282A61M2016/003A61M2205/3303A61M2205/52A61M2230/005A61M2230/40
Inventor 杰弗里·彼得·艾米特斯泰德迪内希·拉马南
Owner RESMED LTD