Variability of SpO2 Measurements Depending on the Choice of Finger for Sensor Placement (FinSpO2)

Czech Technical University in Prague

Status: Invitation-only

Conditions: Hypercapnia; Hypoxia

Treatments: Other: Breathing a mixture of O2, N2 and CO2 and monitoring SpO2 on each finger

Study type: Interventional

Funder types: Other

Identifiers

NCT04771663

CzechTU

Details and patient eligibility

About

The aim of the project is to experimentally determine the effect of the choice of finger for the placement of a pulse oximeter sensor on the results of measuring peripheral blood oxygen saturation (SpO2) in a healthy person with short-term hypoxia and hypercapnia.

Full description

The aim of the project is to experimentally determine the effect of the choice of finger for the placement of a pulse oximeter sensor on the results of measuring peripheral blood oxygen saturation (SpO2) in a healthy person with short-term hypoxia and hypercapnia. This is an intervention prospective study that will take place at the Faculty of Biomedical Engineering, especially on FBMI students. The experiment consists of two phases, in which in the first phase, the volunteers will inhale the hypoxic mixture for five minutes after the stabilization phase. In the second phase, volunteers inhale a hypoxic and hypercapnic mixture. During the experiment, non-invasive SpO2 measurements will be performed continuously on individual fingers of both volunteer hands.

Enrollment: 40 estimated patients

Sex: All

Ages: 18 to 60 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Passing the initial examination, which will determine the following data: finger circumference, heart rate, blood pressure and blood oxygen saturation

Exclusion criteria

• post-traumatic conditions of the upper limbs affecting the perfusion of the fingers or injuries or skin diseases on the fingers.
• pneumothorax or a condition after cardiovascular surgery.
• anemia, bradycardia, hemoglobinopathy or other diseases of the cardiovascular system, pregnancy, diabetes, hypotension or hypertension.

Trial design

Primary purpose: Basic Science

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Single Blind

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40 participants in 2 patient groups

Hypoxic

Experimental group

Description:

In this phase, participants inhale the hypoxic mixture for five minutes.

Treatment:

Other: Breathing a mixture of O2, N2 and CO2 and monitoring SpO2 on each finger

Hypoxic and Hypercapnic

Experimental group

Description:

In this phase, participants inhale the hypoxic and hypercapnic mixture for five minutes.

Treatment:

Other: Breathing a mixture of O2, N2 and CO2 and monitoring SpO2 on each finger