Pharyngeal oxygen delivery device sustains manikin lung oxygenation longer than high-flow nasal cannula

• DOI: 10.1080/08998280.2023.2274702
• Publication Date: 2023-11-14T13:13:39Z
• Authors: Jeramie B. Hanson; John R. Williams; Emily H. Garmon; Phillip M. Morris; Russell K. McAlli...; Courtney N. Shaver; William C. Culp
• Keywords: oropharyngeal airway; pharyngeal oxygen delivery device; high-flow nasal cannula; Continuous oxygen delivery; Neurosurgery; 610; supraglottic oxygenation; 03 medical and health sciences; 0302 clinical medicine; Internal Medicine; Medical Specialties; Medicine and Health Sciences

Hypoxemia during a failed airway scenario is life threatening. A dual-lumen pharyngeal oxygen delivery device (PODD) was developed to fit inside a traditional oropharyngeal airway for undisrupted supraglottic oxygenation and gas analysis during laryngoscopy and intubation. We hypothesized that the PODD would provide oxygen as effectively as high-flow nasal cannula (HFNC) while using lower oxygen flow rates.We compared oxygen delivery of the PODD to HFNC in a preoxygenated, apneic manikin lung that approximated an adult functional residual capacity. Four arms were studied: HFNC at 20 and 60 liters per minute (LPM) oxygen, PODD at 10 LPM oxygen, and a control arm with no oxygen flow after initial preoxygenation. Five randomized 20-minute trials were performed for each arm (20 trials total). Descriptive statistics and analysis of variance were used with statistical significance of P < 0.05.Mean oxygen concentrations were statistically different and decreased from 97% as follows: 41 ± 0% for the control, 90 ± 1% for HFNC at 20 LPM, 88 ± 2% for HFNC at 60 LPM, and 97 ± 1% (no change) for the PODD at 10 LPM.Oxygen delivery with the PODD maintained oxygen concentration longer than HFNC in this manikin model at lower flow rates than HFNC.