Study on painless gastroscopy and POCD of smoking patients under general anesthesia

The number of smoking patients receiving anesthesia and surgical treatment is increasing day by day. It will be useful for medical advancement to explore whether smoking is an independent risk factor for postoperative cognitive impairment. A double‐blind, parallel, and controlled study was conducted on 112 patients who fulfilled the criteria for inclusion in this study and planned to undergo painless gastroscopy under general anesthesia. The baseline mini‐mental state examination (MMSE) scores and basic information were collected. The changes in the MMSE scores after waking up and 3 days after anesthesia were observed, and the adverse events (respiratory adverse reactions, circulatory fluctuations, and adverse reactions, drug use, etc.) were analyzed by logistic regression. The baseline level of each group is consistent, which is worth studying. The MMSE score of the smoking group after anesthesia was significantly different from that of the control group (p < 0.05), but there was no significant difference between the two groups 3 days after anesthesia. Among them, the differences in adverse events between the two groups were in terms of hiccup, postoperative cough, and SpO(2) < 90% (p < 0.05). Regression analysis indicates that smoking after anesthesia leads to the occurrence of postoperative cough. Smoking is probably an independent risk factor for post‐operative cognitive dysfunction (POCD) in early postoperative patients.