Clinical Endoscopy

Original Article

Development of a predictive model for hypoxia due to sedatives in gastrointestinal endoscopy: a prospective clinical study in Korea: Jung Wan Choe, Jong Jin Hyun, Seong-Jin Son, Seung-Hak Lee; Clin Endosc 2024;57(4):476-485. Published online April 12, 2024; DOI: https://doi.org/10.5946/ce.2023.198

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Background
/Aims: Sedation has become a standard practice for patients undergoing gastrointestinal (GI) endoscopy. However, considering the serious cardiopulmonary adverse events associated with sedatives, it is important to identify patients at high risk. Machine learning can generate reasonable prediction for a wide range of medical conditions. This study aimed to evaluate the risk factors associated with sedation during GI endoscopy and develop a predictive model for hypoxia during endoscopy under sedation.
Methods
This prospective observational study enrolled 446 patients who underwent sedative endoscopy at the Korea University Ansan Hospital. Clinical data were used as predictor variables to construct predictive models using the random forest method that is a machine learning algorithm.
Results
Seventy-two of the 446 patients (16.1%) experienced life-threatening hypoxia requiring immediate medical intervention. Patients who developed hypoxia had higher body weight, body mass index (BMI), neck circumference, and Mallampati scores. Propofol alone and higher initial and total dose of propofol were significantly associated with hypoxia during sedative endoscopy. Among these variables, high BMI, neck circumference, and Mallampati score were independent risk factors for hypoxia. The area under the receiver operating characteristic curve for the random forest-based predictive model for hypoxia during sedative endoscopy was 0.82 (95% confidence interval, 0.79–0.86) and displayed a moderate discriminatory power.
Conclusions
High BMI, neck circumference, and Mallampati score were independently associated with hypoxia during sedative endoscopy. We constructed a model with acceptable performance for predicting hypoxia during sedative endoscopy.

Citations

Citations to this article as recorded by

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Review

New sedatives and analgesic drugs for gastrointestinal endoscopic procedures: Jae Min Lee, Yehyun Park, Jin Myung Park, Hong Jun Park, Jun Yong Bae, Seung Young Seo, Jee Hyun Lee, Hyung Ku Chon, Jun-Won Chung, Hyun Ho Choi, Jun Kyu Lee, Byung-Wook Kim, Endoscopic Sedation Committee of the Korean Society of Gastrointestinal Endoscopy; Clin Endosc 2022;55(5):581-587. Published online August 29, 2022; DOI: https://doi.org/10.5946/ce.2021.283

Abstract PDF PubReader ePub

Procedural sedation has become increasingly common in endoscopy. Sedatives and analgesics induce anxiolysis and amnesia. In addition, an appropriate level of sedation is necessary for safe procedures including therapeutic endoscopy. Midazolam and propofol are the most commonly used drugs in sedative endoscopy. In recent years, the need to ascertain the safety and effectiveness of sedation has increased in practice. Therefore, new sedatives and analgesic drugs for optimal sedative endoscopy, have recently emerged. This article reviews the characteristics of sedatives and analgesics, and describes their clinical use in gastrointestinal endoscopy.

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