title: [Changes in respiratory and circulatory function during sequential invasive-noninvasive mechanical ventilation].
abstract: OBJECTIVE
  To investigate the change of respiratory and circulatory function in COPD during sequential invasive-noninvasive mechanical ventilation.
  
  
  METHODS
  12 COPD patients with type II respiratory failure were ventilated via endotracheal intubation. When pulmonary infection was under control (the appearance of "PIC Window"), all patients were extubated and received mask ventilation. The parameters of hemodynamics oxygenation and esophageal pressure were measured during endotracheal ventilation and mask ventilation (3 hrs after extubation).
  
  
  RESULTS
  The change of respiratory and circulatory parameters were not significantly different between invasive mechanical ventilation and noninvasive mechanical ventilation (P > 0.05).
  
  
  CONCLUSIONS
  The respiratory and circulatory function of COPD patients remained stable during sequential invasive-noninvasive mechanical ventilation.
authors.affiliation: Beijing Chaoyang Hospital-Beijing Institute of Respiratory Medicine, Capital University of Medical Science, Beijing 100020, China.
authors.forename: M
authors.initials: M
authors.lastname: Shang
authors.forename: C
authors.initials: C
authors.lastname: Wang
authors.forename: H
authors.initials: H
authors.lastname: Dai
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006439:Hemodynamics; D006801:Humans; D008297:Male; D008875:Middle Aged; D029424:Pulmonary Disease, Chronic Obstructive / Q000503:physiopathology*; D012119:Respiration; D012121:Respiration, Artificial