NCT07014501

Study on the Correlation Mechanism and Application of Genetic Susceptibility, Hemoglobin Adaptation Changes, and Extubation Success Rate in Stroke Patients With Tracheotomy at Different Altitudes

• Status: Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 717 (estimated)
• Sponsor: The Second Affiliated Hospital of Kunming Medical University · Academic / Other
• Sex: All
• Age: 18 Years – 75 Years
• Healthy volunteers: Not accepted

Summary

Patients with brain injuries caused by various reasons often need tracheotomy to improve breathing, but this procedure can cause the air to lose its nasal regulation, increase the risk of lung infections, and reduce their quality of life. Tracheal extubation is crucial for patient recovery. Environmental factors in high-altitude areas have a significant impact on human cardiovascular function, including changes in blood oxygen caused by low oxygen environments and cardiovascular adaptability of long-term residents. There is limited research on the impact of high altitude on the success rate of tracheal extubation in brain injury. The research team conducted a retrospective study on 501 patients who underwent tracheotomy at the Second Affiliated Hospital of Kunming Medical University and found that high GCS scores and hemoglobin concentrations were beneficial for extubation. The increase in hemoglobin concentration among high-altitude residents may be an adaptive response to hypoxia, and the research team speculates that this may become a protective factor for successful extubation. However, some argue that altitude sickness and adaptive genetic changes may counteract each other. Simonson's team found that the decline of hemoglobin concentration in Tibetans was related to specific gene expression, indicating that the genetic adaptability of high altitude residents had a unique relationship with hemoglobin concentration. Therefore, the research team speculates that people living in highlands for a long time are more adaptable to hypoxic environments than those living in lowlands. Under severe stress (hypoxia), people living in highlands for a long time may have lower sensitivity to pulmonary blood flow redistribution or oxygen delivery compared to those living in lowlands. This study is a multicenter observational study, with sub centers listed as follows: Jiangchuan District People's Hospital, Huaning County People's Hospital, Baoshan Second People's Hospital, Huize County People's Hospital, Mengla County People's Hospital, Tonghai County People's Hospital, Jinghong City First People's Hospital, Xuanwei City First People's Hospital, Qiubei County People's Hospital, Fengqing County People's Hospital, Weixin County People's Hospital, Yulong County People's Hospital, Yanshan County People's Hospital, Xundian County People's Hospital, Shizong County People's Hospital, Luxi County People's Hospital, Yunnan Province Northeast Yunnan Central Hospital, Luoping County People's Hospital, Xinping County General Hospital, Suijiang County People's Hospital, Nanhua County Hospital, Guangnan County People's Hospital County People's Hospital, Jianshui County People's Hospital, Simao District People's Hospital of Pu'er City, Funing County People's Hospital, Xinping County Traditional Chinese Medicine Hospital Xundian County First People's Hospital and Jingdong County People's Hospital.

Conditions

• Stroke
• Tracheotomy Patients

Interventions

Type	Name	Description
OTHER	High altitude	Altitude above 3500 meters.
OTHER	Medium altitude	Altitude between 3500 meters and 1500 meters.
OTHER	Low altitude group	Altitude below 1500 meters.

Timeline

• Start date: 2025-01-01
• Primary completion: 2027-12-31
• Completion: 2028-05-29
• First posted: 2025-06-11
• Last updated: 2025-06-11

Locations

1 site across 1 country: China