The Efficacy of Postoperative Application of HFNC at Acute Phase for Minimally Invasive Esophagectomy Surgery Patients

The HFNC used in this study can supply more than 40-60 L/min of oxygen flow, which is many times higher than the traditional nasal cannula. In addition, HFNC provides heating and moisturizing functions, so the patients 'nasal and oropharyngeal cavities do not dry out. This way, the patients can wear HFNC continuously for many days. Furthermore, when the patients close their mouths, HFNC can create a PEEP of 6-8 cmH2O, which helps with lung expansion after chest surgeries and lowers the risk of pneumonia related to lung collapses.