Comparing the effects of high flow nasal oxygen versus face mask oxygen on expired end tidal oxygen concentration after simulated preoxygenation of obese pregnant people

Not Applicable

Recruiting

• Conditions: Preoxygenation; Anaesthesia; Obesity; Pregnancy; Anaesthesiology - Anaesthetics; Reproductive Health and Childbirth - Childbirth and postnatal care; Respiratory - Normal development and function of the respiratory system; Diet and Nutrition - Obesity

• Registration Number: ACTRN12624000283572
• Lead Sponsor: Dr Patrick CF Tan

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Study Start: 2024-03-20
• Last Update Posted: 29 July 2024

Recruitment & Eligibility

• Status: Recruiting
• Sex: Female
• Target Recruitment: 100

Inclusion Criteria

Pregnant people with uncomplicated pregnancies greater than or equal to 36 weeks’ gestation, BMI greater than or equal to 30 kg.m-2

Exclusion Criteria

Significant nasal pathology, severe systemic disease excluding obesity (as defined by an American Society of Anesthesiologists (ASA) physical status score of 4), preeclampsia of any degree, overwhelming sepsis, in labour or multiple pregnancy

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Expired end tidal oxygen concentration[Expired oxygen concentration and waveform data will be measured by the gas analyser on our SCIO Oxi Four Plus gas monitor (Drager, Lubeck, Germany) and recorded. First breath end tidal oxygen concentration will be determined from the display and completeness of breath capture determined from interrogation of the waveform. The first end tidal oxygen concentration value from the first expired breath after respective protocols completed at the timepoint just before the capnography trace changes from plateau to downward spike with a square end tidal waveform]