The Copmparison of Accuracy of PtcCO2 and in PetCO2 in COPD Patients

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Total Enrollment

100 participants

Study Classification

OBSERVATIONAL

Study Start Date

2019-08-10

Study Completion Date

2020-06-01

Brief Summary

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The pathophysiological characteristics of COPD is irreversible airflow restriction which may influence the gas exchange and cause the abnormal PaO2 and PaCO2. Assessment of the partial arterial pressure of carbon dioxide (PaCO2 ) is the 'gold standard' for the evaluation of the adequacy of alveolar ventilation.Method used mostly nowadays : arterial puncture which is accurate but is invasive 、painful、 non-dynamic and there is risk of infection and tissue、nerve damage. Noninvasive measurement methods (Most commonly used)： end-tidal CO2（ ETCO2）、 transcutaneous CO2(TcCO2). They all can monitor the PaCO2 dynamically、 noninvasively, but is existence of controversy of the accuracy. So the investigators want to compare the accuracy of these two noninvasive methods for assessment of PaCO2.

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Detailed Description

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Conditions

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COPD

Study Design

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Observational Model Type

OTHER

Study Time Perspective

CROSS_SECTIONAL

Study Groups

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stable COPD group

include COPD patients with stable state

No interventions assigned to this group

AECOPD group

include COPD patients with acute exacerbation

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* COPD patients

Exclusion Criteria

* hemodynamics is unstable;
* any other lung disease despite COPD；
* other diseases influencing experiments: Cognitive impairment disease、 mouth and nose trauma.

Minimum Eligible Age

20 Years

Maximum Eligible Age

100 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No