Background
hypoxia, airway obstruction, obese, apnea
GASTROINTESTINAL DISEASES, OBESE, HYPOVENTILATION, DISEASE, AIRWAY OBSTRUCTION, HYPOXIA, SLEEP APNEA SYNDROME, RESPIRATORY DEPRESSION
Sedation for endoscopy is becoming increasingly common as a means of diagnosing and treating gastrointestinal diseases, increasing patient comfort and compliance, and improving the efficiency of disease diagnosis and treatment [In obese patients, the oxygen reserve capacity is poor, and a few patients have sleep apnea syndrome, which can easily cause posterior tongue drop in general intravenous anesthesia and lead to upper airway obstruction, respiratory depression, SpOUsing pulse oximetry alone can significantly delay the detection of apnea or hypoventilation, especially if the patient receives supplemental oxygen [Currently, there is no consensus on whether capnography can effectively reduce the occurrence of hypoxia during endoscopy. Beltz et al. [In this study, we explored whether intra-operative capnography could effectively reduce the incidence of hypoxia in patients undergoing sedation for EGD and colonoscopy, limiting the subjects to mildly obese patients who are more prone to intra-operative hypoxia.