Examining Obstructive Sleep Apnea Risk and Changes in Oxygen Saturation in an Outpatient Endoscopy Center

Thumbnail Image
Journal Title
Journal ISSN
Volume Title

The significant increase in obesity, which is classified as a body mass index (BMI) greater than 30 kg/m² presents potential challenges in the field of office-based anesthesia. As obesity has become more prevalent in our society, the incidence of undiagnosed or untreated obstructive sleep apnea (OSA) and the associated comorbidities have increased. Purpose: The purpose of this project was to examine the changes between pre-procedural and post-procedural oxygen saturations among patients with moderate to high OSA risk. Methods: Participants (N=316) in the pre-procedural area were screened using the STOP-BANG questionnaire prior to receiving anesthesia. The participant’s STOP-BANG score (SBS) and pre-post procedural oxygen saturations were obtained and documented. Final data was obtained using a retrospective chart review. Results: More than half of the participants’ (59.8%; n=189) were identified as having a moderate to severe risk of OSA (Mean SBS=4, SD=1.05). There was a statistically significant reduction in mean oxygen saturations for participants with moderate to severe OSA risk from pre-procedural (M=97.2%, SD=1.76%) to post-procedural (M=94.2%, SD=3.48%); t (4) = 10.45, p < .001. Discussion: The clinical significance of the findings of this study reinforces the importance of screening all patients in the pre-procedural area to identify those at increased risk of OSA. This will allow referral to sleep specialists and provide evidence-based data that can be utilized by the anesthesia providers to update exclusion criteria identifying patients that are not appropriate for office-based procedures, with the goal of limiting potential adverse events.

DNP project