Effect of Gel Nail Application on Pulse Oximetry Measurements in Healthy Individuals

June 7, 2026 updated by: Gamze BOZKUL, Tarsus University
The aim of this study was to determine the effect of gel nail application on pulse oximetry measurements in healthy subjects. This study was planned as a prospective, self-controlled clinical research to determine the effect of gel nail application on SpO2 and pulse values in healthy people. The population of the study will consist of women who had gel nail application in a private beauty centre between July 2023 and July 2024. The minimum required sample size was calculated as 162 in G*Power (3.1.9.2) programme (α=0.05 (two-way), 1-β=0.95). The data will be collected with the data collection form prepared in line with the literature.First, the age and smoking status of participants who meet the research criteria will be recorded on the data collection form. Then, the finger to which the gel nail polish will be applied and the control finger will be determined by drawing lots between the index fingers. Based on the result of this draw, gel nail polish will be applied to the left index finger of each participant, while the right index finger will be used as the control. Following the application of gel nail polish, SpO₂ and heart rate (HR) measurements will be obtained simultaneously from the left and right index fingers using pulse oximeters (POs). All measurements will be performed under standardized conditions: (1) participants will rest for at least 5 minutes before measurements, (2) their hands will be positioned at heart level, (3) ambient lighting and room temperature will be kept constant, and (4) participants will be instructed to remain still during measurements. These procedures will be applied consistently to all participants in order to minimize variability and enhance data reliability. The data obtained from the study will be analysed using SPSS (Statistical Package for Social Sciences) for Windows 26.0 software.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

The aim of this study was to determine the effect of gel nail application on pulse oximetry measurements in healthy subjects. This study was planned as a prospective, self-controlled clinical research to determine the effect of gel nail application on SpO2 and pulse values in healthy people. The population of the study will consist of women who had gel nail application in a private beauty centre between July 2023 and July 2024. The minimum required sample size was calculated as 162 in G*Power (3.1.9.2) programme (α=0.05 (two-way), 1-β=0.95). The data will be collected with the data collection form prepared in line with the literature.On this form, the age of the individual, the color of the gel nail, smoking status, and the SpO2 and pulse values measured by pulse oximetry. First, the age and smoking status of participants who meet the research criteria will be recorded on the data collection form. Then, the finger to which the gel nail polish will be applied and the control finger will be determined by drawing lots between the index fingers. Based on the result of this draw, gel nail polish will be applied to the left index finger of each participant, while the right index finger will be used as the control. Following the application of gel nail polish, SpO₂ and heart rate (HR) measurements will be obtained simultaneously from the left and right index fingers using pulse oximeters (POs).

All measurements will be performed under standardized conditions: (1) participants will rest for at least 5 minutes before measurements, (2) their hands will be positioned at heart level, (3) ambient lighting and room temperature will be kept constant, and (4) participants will be instructed to remain still during measurements. These procedures will be applied consistently to all participants in order to minimize variability and enhance data reliability. The data obtained from the study will be analysed using SPSS (Statistical Package for Social Sciences) for Windows 26.0 software. Mean and standard deviation will be used in the evaluation of the data. Statistical significance will be accepted as p<0.05 (95% confidence interval).

Study Type

Interventional

Enrollment (Actual)

162

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • No communication problems,
  • With full left-hand fingernails,
  • No structural problems such as clubbing,
  • Body temperature ≥ 36- <37.5 ºc,
  • SpO2 value ≥ 95%,
  • Capillary refill ≤ 2 seconds,
  • Who volunteered to participate in the research,
  • No psychiatric or physical illness that prevents communication,
  • Without circulatory problems such as Reynauld syndrome and peripheral arterial disease,
  • Without anaemia,
  • No respiratory diseases such as chronic obstructive pulmonary disease and asthma
  • Becoming a woman

Exclusion Criteria:

  • Communication problems,
  • Incomplete left fingernails,
  • Structural problems like sticky fingers,
  • Body temperature ≥ 36- < 37.5 ºc,
  • SpO2 value <95%,
  • Capillary refill >2 seconds,
  • Not volunteering to participate in the research,
  • Psychiatric or physical illness that prevents communication,
  • With circulatory problems such as Reynauld syndrome and peripheral arterial disease,
  • Anaemia
  • Respiratory diseases such as chronic obstructive pulmonary disease and asthma
  • Not being of the female gender

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Supportive Care
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: EXPERIMENTAL AND CONTROL GROUP

First, the age and smoking status of participants who meet the research criteria will be recorded on the data collection form. Then, the finger to which the gel nail polish will be applied and the control finger will be determined by drawing lots between the index fingers. Based on the result of this draw, gel nail polish will be applied to the left index finger of each participant, while the right index finger will be used as the control. Following the application of gel nail polish, SpO₂ and heart rate (HR) measurements will be obtained simultaneously from the left and right index fingers using pulse oximeters (POs).

All measurements will be performed under standardized conditions: (1) participants will rest for at least 5 minutes before measurements, (2) their hands will be positioned at heart level, (3) ambient lighting and room temperature will be kept constant, and (4) participants will be instructed to remain still during measurements. These procedures will be applied consiste
Other: Gel nail application
The finger to which the gel nail polish will be applied and the control finger will be determined by drawing lots between the index fingers. Based on the result of this draw, gel nail polish will be applied to the left index finger of each participant, while the right index finger will be used as the control. Following the application of gel nail polish, SpO₂ and heart rate (HR) measurements will be obtained simultaneously from the left and right index fingers using pulse oximeters (POs).
Other Names:
  • Control group: Non-applied nail

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
SpO2 value
Time Frame: 3 months
Data collection form: Following the application of gel nail polish, SpO₂ measurements will be obtained simultaneously from the left and right index fingers using pulse oximeters (POs).
3 months
Pulse value
Time Frame: 3 months
Data collection form: Following the application of gel nail polish, heart rate (HR) measurements will be obtained simultaneously from the left and right index fingers using pulse oximeters (POs).
3 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Tarsus University

Collaborators

Mustafa Kemal University
Mersin University
Necmettin Erbakan University

Investigators

  • Principal Investigator: Gülay Altun Uğraş, Assoc. Dr., Mersin University
  • Principal Investigator: Ayşenur Serbest Baz, Lecturer, Mustafa Kemal University
  • Principal Investigator: Serpil Yüksel, Assoc.Dr., Necmettin Erbakan University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

July 1, 2023

Primary Completion (Actual)

March 30, 2024

Study Completion (Actual)

July 1, 2024

Study Registration Dates

First Submitted

October 17, 2023

First Submitted That Met QC Criteria

October 17, 2023

First Posted (Actual)

October 26, 2023

Study Record Updates

Last Update Posted (Actual)

June 10, 2026

Last Update Submitted That Met QC Criteria

June 7, 2026

Last Verified

June 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

  • TU-BOZKUL-004

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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