N/A N=80 Other

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

Morbid Obesity · Surgery

Bottom Line

View on ClinicalTrials.gov: NCT03021551 ↗

Enrolled (actual)

Serious AEs

0.0%

Results posted

Apr 2022

Primary outcome: Primary: Utility of ORi Providing Added Warning Time — 46.5; 87.0 seconds

Study Design & Population

Study type: Interventional
Phase: N/A
Interventions: Rainbow sensor (Device)
Age: Adult, Older Adult · 18+ yrs
Sex: All
Sponsor: Masimo Corporation
Primary completion: Jul 2018

Outcome Measures

Outcome	Result	p-value
PRIMARY Utility of ORi Providing Added Warning Time	46.5; 87.0	—

Summary

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.

Eligibility Criteria

Inclusion Criteria

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

Exclusion Criteria

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

View full record on ClinicalTrials.gov →

Data sourced from ClinicalTrials.gov (NCT03021551). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.