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Preoxygenation Using THRIVE Versus Facemask in Parturients

Not Applicable
Completed
Conditions
Preoxygenation
Registration Number
NCT03772574
Lead Sponsor
University of British Columbia
Brief Summary

This study aims to determine the duration for pre-oxygenation using THRIVE and facemask for parturients.

Detailed Description

We aim to determine the duration required for THRIVE and facemask preoxygenation in parturients for them to achieve ETO2 \>90%.

Recruitment & Eligibility

Status
COMPLETED
Sex
Female
Target Recruitment
91
Inclusion Criteria
  • Pregnant patients ≥36 weeks gestation.
  • Non-laboring patients admitted for elective Cesarean delivery under neuraxial anesthesia or induction of labor.
  • American Society of Anesthesiologists (ASA) class 2.
Exclusion Criteria
  • Any medical conditions that are likely to affect gas exchange.
  • Obstructed nasal passage.
  • Unable to tolerate a tight fitting facemask.
  • Body Mass Index ≥40 kg/m2.
  • Patients who are in active labor (i.e. cervical dilation ≥4cm).
  • Patients who are unable to give informed consent.

Study & Design

Study Type
INTERVENTIONAL
Study Design
PARALLEL
Primary Outcome Measures
NameTimeMethod
Preoxygenation DurationMaximum 8 minutes

Duration to achieve EtO2 \>=90% after tidal volume breathing using THRIVE and facemask pre-oxygenation.

Secondary Outcome Measures
NameTimeMethod
Proportion to Reach EtO2 of 90 Percent at 7 Minutes7 minutes of preoxygenation
Proportion to Reach End Tidal Oxygen (ETO2) of 90 Percent at 3 Minutes3 minutes of pre-oxygenation
Proportion to Reach EtO2 of 90 Percent at 4 Minutes4 minutes of preoxygenation
Proportion to Reach EtO2 of 90 Percent at 5 Minutes5 minutes of preoxygenation
Proportion to Reach EtO2 of 90 Percent at 8 Minutes8 minutes of preoxygenation
Comfort Score1 minute after data collection

Patients were asked to rate their comfort with the device on a 5 point Likert Scale: (1=completely uncomfortable, 2=slightly uncomfortable, 3=neutral, 4=slightly comfortable, 5= completely comfortable)

Proportion to Reach EtO2 of 90 Percent at 6 Minutes6 minutes of preoxygenation
Acceptability Score1 minute after data collection

Acceptability was measured with a 5-point Likert Score (1= unacceptable, 2=slightly unacceptable,3=neutral, 4=slightly acceptable, 5=acceptable).

Trial Locations

Locations (1)

BC Women's Hospital

🇨🇦

Vancouver, British Columbia, Canada

BC Women's Hospital
🇨🇦Vancouver, British Columbia, Canada
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