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Jan Drews 1 Article
Impact of a simple non-invasive nasal mask device on intraprocedural hypoxemia in overweight individuals undergoing upper gastrointestinal endoscopy with sedation provided by a non-anesthesiologist provider
Jan Drews, Jonas Harder, Hannah Kaiser, Miriam Soenarjo, Dorothee Spahlinger, Peter Wohlmuth, Sebastian Wirtz, Ralf Eberhardt, Florian Bornitz, Torsten Bunde, Thomas von Hahn
Clin Endosc 2024;57(2):196-202.   Published online June 27, 2023
DOI: https://doi.org/10.5946/ce.2023.010
Graphical AbstractGraphical Abstract AbstractAbstract PDFPubReaderePub
Background
/Aims: Hypoxemia is a common side effect of propofol sedation during endoscopy. Applying mild positive airway pressure (PAP) using a nasal mask may offer a simple way to reduce such events and optimize the conditions for diagnostic and therapeutic upper gastrointestinal endoscopies.
Methods
We compared overweight patients (body mass index >25 kg/m2) with a nasal PAP mask or standard nasal cannula undergoing upper gastrointestinal endoscopies by non-anesthesiologists who provided propofol sedation. Outcome parameters included the frequency and severity of hypoxemic episodes.
Results
We analyzed 102 procedures in 51 patients with nasal PAP masks and 51 controls. Episodes of hypoxemia (oxygen saturation [SpO2] <90% at any time during sedation) occurred in 25 (49.0%) controls compared to 8 (15.7%) patients with nasal PAP masks (p<0.001). Severe hypoxemia (SpO2 <80%) occurred in three individuals (5.9%) in both groups. The mean delta between baseline SpO2 and the lowest SpO2 recorded was significantly decreased among patients with nasal PAP mask compared to controls (3.7 and 8.2 percentage points difference, respectively). There were significantly fewer airway interventions performed in the nasal PAP mask group (15.7% vs. 41.2%, p=0.008).
Conclusions
Using a nasal PAP mask may be a simple means of increasing patient safety and ease of examination.
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