The incidence of hypoxemia during gastrointestinal endoscopy sedation is high, but there is still a lack of perfect prediction model of hypoxemia, which often leads to unpredictable respiratory complications. In order to ensure the safety of gastrointestinal endoscopy sedation and make emergency plans in advance, a better diagnostic model is urgently needed to help assess the risk of hypoxemia in patients undergoing the process and make early intervention measures. Facial photography is a simple and feasible measure that can show the facial soft tissue and structure of bone. The purpose of this study is to explore whether facial photography combined with other clinical indicators can build a prediction model of hypoxemia during gastrointestinal endoscopy sedation.
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Measurement of facial features
Timeframe: 1 day During the process of anesthesia assessment