Abstract

In the present study, the purpose was to investigate the effect of oxygen therapy applied with a double nasal cannula on desaturation and respiratory complications in cases planned for gastrointestinal endoscopy. A total of 300 patients with ASA I-II, between the ages of 18-65, who were scheduled to undergo gastrointestinal endoscopy, were included in the study. Following routine monitoring, the patients were randomized into 3 groups using the envelope method. Group TK5 (n=100) was administered 5 liters/minute (L/min) preoxygenation with a nasal oxygen cannula for 5 minutes during the procedure and afterwards, 5 L/min oxygen in the same manner. Group TK15 (n=100) was administered 15 L/min preoxygenation with a nasal oxygen cannula for 5 minutes during the procedure and afterwards, 15 L/min oxygen in the same manner. Group CK30 (n=100): 30 L/min preoxygenation with a double nasal oxygen cannula for 5 minutes, and 30 L/min oxygen in the same manner during and after the procedure. The incidence of desaturation was found to be significantly lower in GTK15 (7%) and GCK30 (2%) compared to GTK5 (31%) (p

Key words: Gastrointestinal endoscopy, sedation, respiratory complications, oxygen administration