INTRODUCTION
critically ill, fatigue
RESPIRATORY FAILURE, THORACIC, CRITICALLY ILL
Invasive mechanical ventilation is an important intervention for patients with respiratory failure, in which the weaning process accounts for 42% of total mechanical ventilation time.The 2017 American Thoracic Society guidelines for weaning critically ill patients from mechanical ventilationPrevious studies have found that T‐piece ventilation was more demanding than PSV, and although the former is closer to the respiratory load after weaning, its prolonged implementation can easily lead to ventilator fatigue. The standard low‐level PSV method recommends administering 5–8 cmH