Contactless Vital Signs Measurement

Video Plethysmography for Contactless Vital Signs Measurement: A Pilot Study

This pilot study will determine the feasibility and effectiveness of implementing video plethysmography (PPG) for contactless vital signs and str5ess index measurements from surgical patients in preoperative care. Our primary objective is to determine the feasibility and validity of using video PPG to collect contactless BP, HR and RR measurements when compared medical-grade instruments. Our secondary objective is to validate the use of video PPG in measuring HRV and stress index when compared to a validated stress questionnaire.

Study Overview

• Status: Completed
• Conditions: Vital Signs Monitoring; Blood Pressure, Heart Rate, Respiratory Rate, Heart Rate Variability, Stress Index, Vital Signs Monitoring
• Intervention / Treatment: Device: Video PPG

Detailed Description

The huge impact of the COVID-19 pandemic on global healthcare systems has given rise to an increased need for virtual care. This pilot study will determine the feasibility and effectiveness of implementing video plethysmography (PPG)for contactless vital signs measurements such as blood pressure (BP), heartrate (HR), respiratory rate (RR) and heart rate variability (HRV) from surgical patients in preoperative care. We also aim to validate the use of video PPG in measuring HRV and stress index when compared to a validated stress questionnaire.

This study aims to assess how video PPG technology can be implemented in a clinical and telemedicine. If proven to be effective, this technology can be integrated into any smartphone or tablet and will allow users to monitor their vital signs with just a 1.5-minute video.

• Study Type: Observational
• Enrollment (Actual): 216

Contacts and Locations

Study Locations

• Canada
  • Ontario
    • Toronto, Ontario, Canada, M5T2S8
      • 399 Bathurst St.,Toronto Western Hopsital, Preadmission Clinic, Dept. of Anesthesia
    • Toronto, Ontario, Canada
      • University Health Network, Toronto Western Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

• Sampling Method: Non-Probability Sample

Study Population

Patients scheduled to undergoing elective inpatient surgery under general and/or regional anesthesia

Description

Inclusion Criteria:

• patients undergoing elective ambulatory surgery with general and/or regional anesthesia;
• 18 years or older;
• able to comprehend study instructions in English

Exclusion Criteria:

• refusal to consent for the study

Study Plan

How is the study designed?

Design Details

• Observational Models: Other
• Time Perspectives: Prospective

Number of groups / cohorts

1

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
Contactless vital signs and stress measurement.; Contactless vital signs and stress measurement. Eligible participants will agree to have a 1.5-minute facial video recorded using an iPad. Video will be processed through a specialized algorithm to obtain BP, HR, RR, HRV and stress index. measurements.	Device: Video PPG; Contactless vital signs and stress measurement using video PPG technology. An iPad will be used to record a video of the participant's, which can then be converted to vital signs using a specialized algorithm.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Vital signs measurement	Blood pressure will be measured by using both video PPG and standard medical grade blood pressure machine preoperatively	24 hours
Vital signs measurement	Heart rate will be measured by using both video PPG and standard medical grade blood pressure machine preoperatively.[	24 hours
Vital signs measurement	Breathing rate will be measured by using both video PPG and standard medical grade blood pressure machine preoperatively	24 hours
HRV and stress index pressure	4. HRV and stress index pressure will be measured by video PPG, stress index will be measured with a validated questionnaire	24 hours

Collaborators and Investigators

• Sponsor: University Health Network, Toronto
• Investigators: Principal Investigator: Frances Chung, MBBS FRCPC, University Health Network, Toronto Western Hospital

Study record dates

Study Major Dates

• Study Start (Actual): February 11, 2022
• Primary Completion (Actual): December 15, 2023
• Study Completion (Actual): December 15, 2023

Study Registration Dates

• First Submitted: December 10, 2021
• First Submitted That Met QC Criteria: December 10, 2021
• First Posted (Actual): December 21, 2021

Study Record Updates

• Last Update Posted (Actual): December 19, 2023
• Last Update Submitted That Met QC Criteria: December 18, 2023
• Last Verified: December 1, 2023

More Information

Terms related to this study

• Keywords: vital signs
• Other Study ID Numbers: 21-6075

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