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Accuracy of Oximeters With Hypoxia and Methemoglobin or Carboxyhemoglobin

This study has been completed.
Information provided by (Responsible Party):
Mespere Lifesciences Inc. Identifier:
First received: April 12, 2012
Last updated: October 2, 2014
Last verified: October 2014
Accuracy of the oximeter.

Condition Intervention
Healthy Volunteers Device: Mespere Oximeter Device: Radiometer OSM-3 Co-Oximeter

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: Accuracy of Oximeters With Hypoxia and Methemoglobin or Carboxyhemoglobin

Further study details as provided by Mespere Lifesciences Inc.:

Primary Outcome Measures:
  • Venous Oxygen Saturation Accuracy Verification against Co-Oximeter [ Time Frame: approximately 1 hour ]

Biospecimen Retention:   Samples With DNA
Whole blood

Enrollment: 9
Study Start Date: September 2014
Study Completion Date: October 2014
Primary Completion Date: September 2014 (Final data collection date for primary outcome measure)
Groups/Cohorts Assigned Interventions
Healthy volunteers
9 subjects (male and female)
Device: Mespere Oximeter
Mespere oximeter provides non-invasive venous blood oxygen saturation.
Device: Radiometer OSM-3 Co-Oximeter
OSM-3, a Radiometer manufactured hemoximeter, is intended for the photometric determination of hemoglobin.

Detailed Description:

The conventional pulse oximeter has been a standard in clinical care for non-invasive hemodynamic monitoring, which only measures the arterial blood oxygenation. There are many clinical situations where tissue hypoxia may exist despite normal values obtained by conventional pulse oximeter. This can be cause by inadequate monitoring of oxygen demand (i.e. venous oxygen saturation) of the tissues.

The existing method for venous blood oxygenation monitored is either through an invasive fiber optic catheter, or intermittently by blood sampling and CO-oximetry. However, catheterization can be costly and can include inherent risks. Therefore, due to the inherent risks of catheterization, venous oximetry is limited only to those critically ill patients. The clinical application of venous oximetry is numerous, including severe sepsis and septic shock, severe trauma and hemorrhagic shock, and heart failure and cardiac arrest.

More complete information on patient hemodynamics can be provided by non-invasively monitoring of venous blood oxygenation.


Ages Eligible for Study:   21 Years to 49 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Healthy volunteers between the ages of 21 and 49 years of either gender, and a range of skin tones

Inclusion Criteria:

  • Healthy volunteers between the ages of 21 and 49 years of either gender

Exclusion Criteria:

  • smokers
  • pregnancy
  • any chronic medical condition including heart disease, hypertension, pulmonary disease, liver or kidney disease
  • obesity
  • evidence of abnormal neck vein anatomy
  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: NCT01583634

United States, California
University of California, San Francisco, Induced Hypoxia Lab
San Francisco, California, United States, 94143
Sponsors and Collaborators
Mespere Lifesciences Inc.
Principal Investigator: Philip E Bickler, MD, PhD University of California, San Francisco
  More Information

Responsible Party: Mespere Lifesciences Inc. Identifier: NCT01583634     History of Changes
Other Study ID Numbers: MLS STP-9100001
Study First Received: April 12, 2012
Last Updated: October 2, 2014 processed this record on September 19, 2017