nctId: NCT06359106 id: 2024.3.1 briefTitle: Effects of Different Inhaled Oxygen Concentrations on Lung Function in Older Patients After Laparoscopic Gastrointestinal Surgery Under General Anesthesia overallStatus: RECRUITING date: 2024-05-10 date: 2025-12-31 date: 2025-12-31 date: 2024-04-11 date: 2024-04-25 name: China Medical University, China class: OTHER briefSummary: This was a multicenter, prospective, parallel-grouping, randomized controlled clinical study comparing low FiO2 (40%) and high FiO2 (80%) levels in older patients undergoing laparoscopic gastrointestinal surgery. conditions: Oxygenation Index studyType: INTERVENTIONAL phases: PHASE4 allocation: RANDOMIZED interventionModel: PARALLEL primaryPurpose: TREATMENT masking: TRIPLE whoMasked: PARTICIPANT whoMasked: INVESTIGATOR whoMasked: OUTCOMES_ASSESSOR count: 1098 type: ESTIMATED name: 80% Oxygen name: 40% Oxygen measure: Oxygenation Index measure: pH value in blood gas analysis 48 hours after the operation measure: oxygen inhalation time measure: inspired oxygen concentration measure: oxygen uptake rate measure: 7 days pulmonary complications measure: 30-day Mortality measure: PaCO2 in blood gas analysis 48 hours after the operation measure: Lactic acid in blood gas analysis 48 hours after the operation sex: ALL minimumAge: 65 Years stdAges: OLDER_ADULT facility: Fourth Affiliated Hospital of China Medical University status: NOT_YET_RECRUITING city: Shenyang state: Liaoning zip: 110001 country: China name: Ayong Tian role: CONTACT lat: 41.79222 lon: 123.43278 facility: the First Hospital of China Medical University status: RECRUITING city: Shenyang state: Liaoning zip: 110001 country: China name: Wenfei Tan, M.D.,Ph.D role: CONTACT phone: 024-83283100 email: winfieldtan@hotmail.com lat: 41.79222 lon: 123.43278 facility: Beijing Friendship Hospital, Capital Medical University status: NOT_YET_RECRUITING city: Beijing country: China name: Yun Wang role: CONTACT lat: 39.9075 lon: 116.39723 facility: Sichuan Provincial People's Hospital status: NOT_YET_RECRUITING city: Chendu country: China name: Qian Shi role: CONTACT facility: Chifeng Municipal Hospital status: NOT_YET_RECRUITING city: Chifeng country: China name: Jiannan Song role: CONTACT lat: 42.26833 lon: 118.96361 facility: First Affiliated Hospital of Chongqing Medical University status: NOT_YET_RECRUITING city: Chongqi country: China name: Ke Wei role: CONTACT lat: 27.00943 lon: 117.18179 facility: Dalian Third People's Hospital status: NOT_YET_RECRUITING city: Dalian country: China name: Shiling Zhao role: CONTACT lat: 38.91222 lon: 121.60222 facility: First Affiliated Hospital, Dalian Medical University status: NOT_YET_RECRUITING city: Dalian country: China name: Yong Luan role: CONTACT lat: 38.91222 lon: 121.60222 facility: First Affiliated Hospital of Harbin Medical University status: NOT_YET_RECRUITING city: Harbin country: China name: Kun Wang role: CONTACT lat: 45.75 lon: 126.65 facility: Harbin Medical University Cancer Hospital status: NOT_YET_RECRUITING city: Harbin country: China name: Fei Han role: CONTACT lat: 45.75 lon: 126.65 facility: First Hospital, Jilin University status: NOT_YET_RECRUITING city: Jilin country: China name: Xuesong Song role: CONTACT lat: 43.85083 lon: 126.56028 facility: Affiliated Hospital of Shandong University of Traditional Chinese Medicine status: NOT_YET_RECRUITING city: Jinan country: China name: Yongliang Chi role: CONTACT lat: 36.66833 lon: 116.99722 facility: First Medical University and Shandong Provincial Qianfoshan Hospital status: NOT_YET_RECRUITING city: Jinan country: China name: Jianbo Wu role: CONTACT lat: 36.66833 lon: 116.99722 facility: First Affiliated Hospital of Kunming Medical University status: NOT_YET_RECRUITING city: Kunming country: China name: Jianlin Shao role: CONTACT lat: 25.03889 lon: 102.71833 facility: Affiliated Hospital of Qingdao University status: NOT_YET_RECRUITING city: Qingdao country: China name: Wei Feng role: CONTACT lat: 36.06488 lon: 120.38042 facility: Liaoning Cancer Hospital and Institute status: NOT_YET_RECRUITING city: Shenyang country: China name: Zeqing Huang role: CONTACT lat: 41.79222 lon: 123.43278 facility: Shenzhen People's Hospita status: NOT_YET_RECRUITING city: Shenzhen country: China name: Chaoran Wu role: CONTACT lat: 22.54554 lon: 114.0683 facility: First Hospital of Hebei Medical University status: NOT_YET_RECRUITING city: Shijia Zhuang country: China name: Li Wang role: CONTACT lat: 34.17775 lon: 109.84894 facility: Second Hospital of Hebei Medical University status: NOT_YET_RECRUITING city: Shijia Zhuang country: China name: Lining Huang role: CONTACT lat: 34.17775 lon: 109.84894 facility: Tianjin Fifth Central Hospital status: NOT_YET_RECRUITING city: Tianjin country: China name: Shimin Shan role: CONTACT lat: 39.14222 lon: 117.17667 facility: YANBIAN University Hospital（Yanbian Hospital） status: NOT_YET_RECRUITING city: Yanbian country: China name: Yongshan Nan role: CONTACT hasResults: False