Oxygen Reserve Index: Utility as Early Warning for Desaturation in Morbidly Obese Patients

Completed

Conditions studied: Morbid Obesity, Surgery

In brief

The Oxygen Reserve Index (ORi) is a reference that could help clinicians with their assessments of normoxic and hyperoxic states by scaling the measured absorption information between 0.00 and 1.00. An ORi of 0.00 corresponds to partial pressure of oxygen (PaO2) values of 100 mmHg and below and an ORi of 1.00 corresponds to PaO2 values of 200 mmHg and above. This is clinical study designed to evaluate the clinical utility of the Oxygen Reserve Index (ORI) as an early warning for arterial hemoglobin desaturation during the induction of general anesthesia and tracheal intubation in obese patients undergoing elective surgical procedures.

Key facts

Study ID

NCT03021551

Run by

Masimo Corporation

People needed

80

Starts

2016-09-15

Expected to finish

2018-07-20

Last updated by the study team

2022-04-19

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Age greater than 18 years
• BMI>30, <40 m/kg2
• Control group only: BMI >18.5 m/kg2, <25 m/kg2
• Scheduled for an elective surgical procedure requiring general anesthesia and endotracheal intubation

You may not qualify if…

• Age less than 18 years
• Adults unable to give primary consent
• Pregnancy
• Prisoners

Where it is running

• UC Davis Health — Sacramento, California, United States

Full record on ClinicalTrials.gov

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