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Method, arrangement and computer program product for respiratory gas monitoring of ventilated patients

一种呼吸气体、通气机的技术，应用在呼吸器、评估呼吸器官、药物的器械等方向，能够解决测量不准确的风险大等问题

Inactive Publication Date: 2013-09-11
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As discussed above, when it comes to infants and high frequency ventilation, ETCO 2 Greater risk of inaccurate measurements

Method used

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  • Method, arrangement and computer program product for respiratory gas monitoring of ventilated patients
  • Method, arrangement and computer program product for respiratory gas monitoring of ventilated patients
  • Method, arrangement and computer program product for respiratory gas monitoring of ventilated patients

Examples

Experimental program
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Embodiment Construction

[0052] figure 2 One embodiment of a method for improving the accuracy of respiratory gas measurements of a ventilated subject is shown. It is assumed here that the patient / subject is ventilated (step 200) at a substantially fixed breathing rate, and that the patient / subject is subjected to ETCO 2 Measurement (step 201). For example, ETCO can be measured at the end of each exhalation of the subject 2 value. Ventilation rates are typically very high, such as 150 breaths per minute, because of the improved ETCO 2 The mechanism of the accuracy of the measurements is mainly expected for high respiration rates, where the reliability of the measurements is more easily compromised than at low respiration rates. It is further assumed that the subject's mean airway pressure remains substantially constant at a particular breathing rate, ie, the ventilator settings are constant such that when the subject breathes at a particular rate, the mean airway pressure will change.

[0053] F...

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PUM

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Abstract

The invention relates to a method, an arrangement and a computer program product for respiratory gas monitoring of ventilated patients. A method, device, and computer program product for improving accuracy of a respiratory gas measurement from a subject ventilated at a predetermined respiration rate through a ventilator. A respiratory gas measurement value is acquired within a first expiration period of the subject, thereby to obtain a first measurement value 32. The ventilator is paused for a pause period 31 within a second expiration period of the subject and a respiratory gas measurement is performed within the pause period, thereby to obtain a second measurement value 33. A correction factor 45 is then determined based on the first measurement value 32 and the second measurement value 33 and the correction factor is employed to correct subsequent respiratory gas measurement values obtained from the subject at the predetermined respiration rate, thereby to improve the accuracy of the measurement.

Description

technical field [0001] The present disclosure generally relates to patient monitoring. More specifically, the present invention relates to monitoring breathing gas levels of a mechanically ventilated patient / subject. The monitored breathing gas is typically carbon dioxide. Background technique [0002] carbon dioxide (CO 2 ), which is a by-product of cellular metabolism, diffuses from the cells into the vascular system and is carried to the lungs by the venous circulation, where carbon dioxide diffuses in the alveolar capillary membranes and is exhaled from the body. Capnometry refers to the (non-invasive) measurement and display of the concentration of carbon dioxide in breathing gases, while capnometry refers to the CO 2 Wave machine. A capnometer measures exhaled CO at the end of a breath 2 The concentration, often referred to as the end-tidal CO 2 (ETCO 2 ). ETCO 2 Expressed as CO in breathing gas 2 proportional pressure or partial pressure. Normal values ​​ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/08
CPCA61B5/0816A61B5/0836A61B5/72A61M16/1055A61M2202/0208A61M2205/502A61M2230/432A61M2230/435A61M2230/437A61M16/085A61M16/1065A61M16/107A61M16/024
Inventor H.维耶蒂厄-奥加R.科丰
Owner GENERAL ELECTRIC CO
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