Sublingual Tonometry to Assess Tissue Perfusion in Patients With Chronic Obstructive Pulmonary Disease (COPD) (subton)

University of Szeged (SZTE)

Status: Completed

Conditions: Healthy Subjects; COPD

Treatments: Device: sublingual silicon capillary

Study type: Interventional

Funder types: Other

Identifiers

NCT01169506

nagymaci54

Details and patient eligibility

About

Sublingual positioning of a silicon capillary system is applied. After 15 min, while the individual is in resting position with closed mouth and normal tidal breathing through the nose is performed, the silicon capillary system is connected to a capnometer and CO2 tension is measured.

The investigators hypothesis is that this setup offers a non-invasive assessment of ventilatory efficiency with similar accuracy as arterial PCO2.

Full description

We have developed a new silicon capillary system for sublingual monitoring of CO2 tension in order to assess tissue perfusion. This set up is non-invasive, cheaper than previous tonometry devices and easier to apply in clinical routine. We have recruited patients with stable COPD and healthy individuals.

Sublingual tonometry results were evaluated after 15 min of tidal breathing with a capnometer for CO2 tension. Corresponding end tidal CO2 (PETCO2)and arterial blood gas values (pH, PaCO2, PaCO2) were also investigated.

Enrollment: 66 patients

Sex: All

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• COPD patients with stable disease

Exclusion criteria

• acute exacerbation of COPD

Trial design

Primary purpose: Diagnostic

Allocation: Non-Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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66 participants in 1 patient group

COPD patients and healthy individuals

Experimental group

Treatment:

Device: sublingual silicon capillary