Ventilation adequacy test

A technology of ventilation volume and hypoventilation, which is applied in the fields of pharmaceutical devices, diagnostic recording/measurement, medical science, etc., and can solve problems such as undetected hypoventilation

Active Publication Date: 2016-10-26
RESMED LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] (c) The patient may have undergone limited diagnostic testing and hypoventilation was not detected because, for example, he did not enter a sleep state in which hypoventilation was present (eg, supine sleep)

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Embodiment Construction

[0053] Such as figure 1 As shown, embodiments of the present invention may include a ventilation assessment device or apparatus 102 having a controller 104 having one or more processors for implementing specific ventilation assessment methods, such as those detailed herein. described algorithm. In some embodiments, ventilation assessment may provide a determination of ventilation adequacy, such as by determining hyperventilation or hypoventilation events. The ventilation assessment optionally may also provide information for making such a determination, for example by generating or analyzing a ventilation histogram. An example of a graphical ventilation histogram 110 is shown in figure 1 is shown in . The device or device may include an integrated chip, memory and / or other control instructions, data or information storage media. For example, program instructions implementing the evaluation method may be encoded on an integrated chip of a memory of a device or device to for...

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Abstract

An automated method for assessing ventilatory adequacy assessment of a patient's respiration is provided. In some embodiments, a ventilation histogram may be determined from measurements of patient respiratory flow. Based on the histogram or the associated ventilation data, the occurrence of hypoventilation or hyperventilation can be detected. For example, data associated with ventilation histograms can be used to calculate kurtosis coefficients and / or skewness coefficients and estimate them as indicators of hypoventilation or hyperventilation. The number of peaks and other characteristics of a ventilation histogram, such as a bimodal ventilation histogram, can be evaluated to detect the occurrence of hypoventilation or adequacy. The detection method can be implemented by a dedicated computer or detection device for measuring the breathing air flow, or by a respiratory therapy device that provides respiratory therapy based on the detection of ventilation adequacy.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of the filing date of US Provisional Patent Application 61 / 466,560, filed March 23, 2011, the contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to methods and apparatus for detecting adequacy or insufficiency of respiratory ventilation, eg normal patient ventilation, hyperventilation or hypoventilation. Background technique [0004] One form of pressure therapy commonly used by patients with obstructive sleep apnea (OSA) is continuous positive airway pressure (CPAP), which is applied by a blower (compressor) via attached hose and mask. Positive pressure can be used to prevent the patient's airway from collapsing during inspiration, thereby preventing recurrent apnea or apnea-hypopnea and its sequelae. This respiratory therapy device supplies clean breathable gas (usually air, with or without supplemental oxygen) at therape...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/00A61M16/00
CPCA61B5/083A61B5/087A61M2016/0027A61M2016/0039A61M2205/15A61M2205/18A61M2205/3553A61M2205/502A61M2230/435A61B5/7264A61M16/0069A61M16/024A61M16/0051A61M16/0057
Inventor 杰弗里·P·亚米斯德迪内希·拉马南
Owner RESMED LTD
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