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

NCT04771663 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 24

Last updated 2026-03-11

No results posted yet for this study

Summary

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.

Conditions

Interventions

OTHER

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

The experiment consists of two separate phases. In one phase, the volunteers inhale one of the mixtures for five minutes. After enough time of recovery, the volunteers undergo the other phase in which they inhale the other mixture of gases. Both phases of the measurement will begin with a two-minute stabilization phase, during which the physiological values of the volunteer will be checked. During the experiment, non-invasive SpO2 measurements will be performed continuously on the individual fingers of both volunteer hands throughout the experiment.

Sponsors & Collaborators

  • Czech Technical University in Prague

    lead OTHER

Principal Investigators

  • Karel Roubík · Czech Technical University in Prague, FBMI

Study Design

Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
SINGLE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Max Age
60 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2020-11-05
Primary Completion
2021-02-15
Completion
2025-10-15

Countries

  • Czechia

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04771663 on ClinicalTrials.gov