Cardiopulmonary prognosis of prophylactic endotracheal intubation in patients with upper gastrointestinal bleeding undergoing endoscopy

Yufang Lin, Fei’er Song, Weiyue Zeng, Yichi Han, Xiujuan Chen, Xuanhui Chen, Yu Ouyang, Xueke Zhou, Guoxiang Zou, Ruirui Wang, Huixian Li, Xin Li

Figure 1. Patient selection flowchart. PEI: prophylactic endotracheal intubation; UGIB: upper gastrointestinal bleeding.