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Capnography with decision support system architecture

A technology of carbon dioxide and level, applied in the direction of pharmaceutical equipment, diagnostic recording/measurement, instruments, etc., can solve problems such as complex processing, information loss, incorrect waveform segmentation, etc.

Active Publication Date: 2018-05-11
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Capnographic waveform analysis provides richer information from the capnogram, but requires complex processing such as detection of respiratory periods, amplitude and period normalization, and segmentation of the capnographic waveform into regions within each respiratory period
These complex analyzes introduce many possible error mechanisms, such as incorrect waveform segmentation or loss of information during normalization operations

Method used

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  • Capnography with decision support system architecture
  • Capnography with decision support system architecture
  • Capnography with decision support system architecture

Examples

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Embodiment Construction

[0017] In some embodiments disclosed herein, a parameter quality index is calculated to quantitatively assess respiratory rate (RR) and end-tidal CO as assessed from capnography. 2 (etCO 2 ) reliability. Also partly based on etCO 2 Parameter Quality Index (etCO 2 PQI) and RR Parameter Quality Index (RR PQI) to calculate Respiratory Wellness Index (RWI). These parameter quality indices allow medical staff to use conventional tools, especially RR and etCO 2 to interpret capnograms, but provide metrics (quality control indices) to assist medical staff in assessing RR and etCO 2 Is it reliable data for making clinical decisions.

[0018] Additionally, in some embodiments, at least in part using CO 2 Value count vs. (grouped) CO 2 Horizontal histogram to calculate the parameter quality index. The histogram is calculated during a time interval covering several breaths. For example, in one exemplary embodiment, the histograms are acquired at 30 second intervals, which corre...

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Abstract

A capnograph device (10) includes a carbon dioxide measurement component (20) and an electronic processor (30) programmed to generate a capnogram (40) comprising carbon dioxide level sample values measured as a function of time. End-tidal carbon dioxide (etC02) is determined from the capnogram, and an etC02 parameter quality index (etC02 PQI) (44) is computed using one or more quantitative capnogram waveform metrics computed from the capnogram. A respiration rate (RR) value is also determined from the capnogram, and a RR PQI (46) computed using the RR value and the etC02 PQI. A respiratory well-being index (RWI) (50) may be computed from the etC02 and RR values and the etC02 and RR PQI values. In some embodiments the one or more capnogram waveform metrics are computed from a capnogram histogram generated from the capnogram.

Description

technical field [0001] The following generally relates to the field of capnography, the field of medical monitoring, and related fields. Background technique [0002] Capnography devices monitor the carbon dioxide (CO 2 ) concentration or partial pressure. Capnography is often used in conjunction with mechanically ventilated patients to assess respiratory status. A skilled anesthesiologist is able to evaluate the capnogram (that is, the CO as measured by the capnography device 2 Trendline) to assess respiratory health. [0003] Capnography is increasingly used as a more general vital sign for assessing patient health. For example, capnography can be used to monitor a patient who is breathing spontaneously and not undergoing mechanical ventilation using a lateral flow capnography device configuration in which breathed air is sampled via a nasal cannula in cooperation with a dedicated sampling pump. In these broader contexts, medical personnel with limited expertise in an...

Claims

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Application Information

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IPC IPC(8): A61B5/083A61B5/097G01N33/497A61M16/04
CPCA61B5/0836A61B5/097A61B5/7235A61B5/7271A61M2230/432G01N33/497A61B5/742A61M16/021G06F17/18
Inventor J·奥尔L·M·布鲁尔P·B·贡内松
Owner KONINKLJIJKE PHILIPS NV
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