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The Camera Oximeter: A Calibration Study

This study has been completed.
Information provided by (Responsible Party):
University of British Columbia Identifier:
First received: November 16, 2012
Last updated: July 4, 2014
Last verified: July 2014
Pulse oximetry is a standard non-invasive method of measuring blood oxygen saturation (SpO2). In developing countries, pulse oximeters are rare because of expense and electricity requirements. Our ECEM group has developed the Phone Oximeter, which uses a cell phone (widely available in developing countries) to compute and analyze information from a pulse oximeter sensor. To further reduce costs, we use the integrated flashlight of a cell phone's camera to extract SpO2 (Camera Oximeter), eliminating the need for external hardware. This study aims to calibrate the Camera Oximeter by exposing 30 healthy adult volunteers to various altitudes in UBC's hypoxia chamber.

Condition Intervention Phase
Blood Oxygen Saturation Level
Heart Rate
Other: Normobaric hypoxia chamber
Phase 2

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Diagnostic
Official Title: The Camera Oximeter: A Calibration Study

Resource links provided by NLM:

Further study details as provided by University of British Columbia:

Primary Outcome Measures:
  • Oxygen saturation [ Time Frame: Across 3 hours ]
    Accurately calibrated Camera Oximeter for measuring oxygen saturation.

Secondary Outcome Measures:
  • Heart rate [ Time Frame: Across 3 hours ]
    Accurately calibrated Camera Oximeter for measuring heart rate.

  • Respiratory rate [ Time Frame: Across 3 hours ]
    Accurately calibrated Camera Oximeter for measuring respiratory rate.

Enrollment: 20
Study Start Date: January 2013
Study Completion Date: August 2013
Primary Completion Date: August 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Normobaric hypoxia chamber
Study subjects will be put into a hypoxic state by exposing them to normobaric (sea-level atmospheric pressure) hypoxia (low oxygen) by administrating an air mix containing a reduced O2 concentration. This is achieved in a hypoxia chamber where O2 concentration is gradually reduced to simulate high altitude (around 4500 m).
Other: Normobaric hypoxia chamber

  Show Detailed Description


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Non-smokers
  • UBC students age 18 and older or non-university students age 19 and older
  • No medical history of respiratory, cardiovascular and neurological problems (capable of undergoing controlled hypoxemia down to SpO2 of 70%).

Exclusion Criteria:

  • Medical history including respiratory, cardiovascular and neurological problems
  • Smokers or individuals exposed to high levels of carbon monoxide that result in elevated carboxyhemoglobin levels (interferes with oximetry readings)
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01732016

Canada, British Columbia
BC Children's Hospital
Vancouver, British Columbia, Canada, V6H 3V4
Sponsors and Collaborators
University of British Columbia
  More Information

Responsible Party: University of British Columbia Identifier: NCT01732016     History of Changes
Other Study ID Numbers: H12-02362
Study First Received: November 16, 2012
Last Updated: July 4, 2014

Keywords provided by University of British Columbia:
pulse oximeter
oxygen saturation
heart rate
accuracy processed this record on April 28, 2017