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Identification and quantification of a ventilatory disturbance causing incorrect measurement of arterial acid-base status

A ventilatory barrier, arterial technique, applied in diagnostic recording/measurement, medical science, blood characterization devices, etc., that can address issues such as the extent and quantification of effects that are poorly understood

Pending Publication Date: 2021-11-30
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although artefacts regarding the effects of ventilation on arterial blood are well known, such as hyperventilation, hypoventilation, etc., the extent and quantification of these effects is poorly understood

Method used

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  • Identification and quantification of a ventilatory disturbance causing incorrect measurement of arterial acid-base status
  • Identification and quantification of a ventilatory disturbance causing incorrect measurement of arterial acid-base status
  • Identification and quantification of a ventilatory disturbance causing incorrect measurement of arterial acid-base status

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Embodiment Construction

[0058] The present invention is a method and corresponding computer system for identifying the extent to which a transient change in ventilation has modified a measure of arterial acid-base state. An element of the invention is a comparison of calculated and measured arterial acid-base states.

[0059] In general, artefacts are known to exist regarding effects on arterial blood from ventilation etc., however, the extent and quantification are poorly understood.

[0060] In particular, in situations where the patient has a sudden transient increase or decrease in ventilation, O2 consumption and CO 2 resulting in the assumption of constant ratios, see figure 1 . A sudden increase in ventilation will cause CO 2 exhale quickly. Since arterial blood volume is relatively small, CO in arterial blood 2 A rapid exhalation will be rapidly seen as an arterial PCO 2 , but no substantial change in arterial oxygen levels. When having a reduced PCO 2 When the arterial blood passes th...

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Abstract

The present invention relates to a computer-implemented method for identification of the degree to which a transient disturbance in ventilation causes changes in measurement of arterial acid-base status.

Description

technical field [0001] The present invention relates to a computer-implemented method for identifying the extent to which a transient disturbance in ventilation results in a change in a measure of arterial acid-base state. The method employs calculated arterial values ​​of acid-base status obtained from analysis of venous blood, as well as measured values ​​of arterial acid-base status. The difference between calculated and measured values ​​is used to quantify the addition or removal of carbon dioxide, which is necessary to account for transient disturbances in arterial acid-base status due to changes in ventilation. The invention also relates to a corresponding data processing system, and a corresponding computer program product for execution on a computer. Background technique [0002] Patients with acute respiratory disease often require arterial blood gases to measure both oxygenation and acid-base status values ​​of arterial blood, including pH and partial pressure of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/145A61M16/00
CPCA61B5/14542A61B5/14539
Inventor B·格拉弗森L·莎斯特里L·P·汤姆森S·E·里斯
Owner OBI