Surgical operation is the first choice for most patients who suffer from early non-small cell lung cancer. The risk of ordinary thoracic surgery is between intermediate and high risk. Due to the high incidence of postoperative pulmonary complications after thoracic surgery, preoperative cardiopulmonary reserve assessment is extremely necessary and important. In recent years, lots of assessment tools are clinically used, including pulmonary function tests, arterial blood gas analysis, breath-holding test and 6-minute walk test. In addition, cardiopulmonary exercise test is used extensively. This article reviews the current status of preoperative cardiopulmonary reserve assessment in thoracic surgery to guide clinical decisions, reduce postoperative complications and improve outcomes.

Objective:To systematically search, extract, summarize, and analyze the best evidence for perioperative gastrointestinal function management in patients with gynecological benign diseases undergoing laparoscopy, providing evidence-based basis for the implementation of relevant evidence.Methods:According to the 6S evidence pyramid model, all evidence on perioperative gastrointestinal function management in patients with gynecological benign diseases undergoing laparoscopy in domestic and foreign databases was retrieved layer by layer from top to bottom, including clinical practice guidelines, evidence summary, clinical decision-making, expert consensus, systematic reviews and so on. The search period was from database establishment to December 31, 2021. Two researchers independently conducted literature screening and quality evaluation, extracting, concluding, and summarizing evidence based on the topic. Eight experts determined the recommended strength of evidence.Results:A total of 21 articles were ultimately included, including two clinical decision-making, one evidence summary, two guidelines, three expert consensuses, two systematic reviews, one Meta-analysis, 9 randomized controlled trials, and one quasi experimental study. Through a discussion between two researchers, a total of 20 pieces of evidence on perioperative gastrointestinal function management in patients with gynecological benign diseases undergoing laparoscopy were extracted and summarized, including preoperative preparation, intraoperative measures, and postoperative nursing (early eating, posture and activity, multimodal analgesia, traditional Chinese medicine prevention and treatment measures, chewing gum, and drinking coffee) .Conclusions:Medical and nursing staff can adopt evidence-based practical recommendations for perioperative gastrointestinal function management in patients undergoing laparoscopy for gynecological benign diseases, so as to promote the recovery of gastrointestinal function.