Preoxygenation Using THRIVE Versus Facemask in Parturients

Preoxygenation Using THRIVE and Facemask Oxygenation in Parturients

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

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

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.