STUDY OBJECTIVE: Our objective was to compare the efficacy of ultrahigh frequency ventilation (UHFV) (frequencies > 3 Hz) with respect to oxygenation, airway pressures, and hemodynamic parameters in patients with adult respiratory distress syndrome (ARDS) who were not responding to conventional ventilation. DESIGN: We used a prospective, multicenter, nonrandomized study design in which each patient served as his own control. SETTING: Three university-affiliated, tertiary-care medical centers participated. PATIENTS: Persons aged 16 to 79 years old with ARDS and unresponsive to conventional ventilation, as defined by a Food and Drug Administration (FDA) approved protocol, were included. INTERVENTIONS: Ninety patients who were not responding to conventional ventilation were changed to UHFV using a microcomputer-controlled device. MEASUREMENTS AND RESULTS: The patient's blood gas, hemodynamic, and airway pressure variables were measured just before, and at 1 and 24 h after the switch to UHFV. We demonstrated clinically significant improvements in arterial oxygen tension (PaO2) and reductions in peak and mean inspiratory pressures. CONCLUSIONS: In a multicenter study, UHFV improved respiratory gas exchange and reduced airway pressure variables at both 1 h and 24 h after the onset of UHFV when compared with conventional ventilation just prior to the change and without hemodynamic deterioration, in patients with severe ARDS.
STUDY OBJECTIVE: Our objective was to compare the efficacy of ultrahigh frequency ventilation (UHFV) (frequencies > 3 Hz) with respect to oxygenation, airway pressures, and hemodynamic parameters in patients with adult respiratory distress syndrome (ARDS) who were not responding to conventional ventilation. DESIGN: We used a prospective, multicenter, nonrandomized study design in which each patient served as his own control. SETTING: Three university-affiliated, tertiary-care medical centers participated. PATIENTS: Persons aged 16 to 79 years old with ARDS and unresponsive to conventional ventilation, as defined by a Food and Drug Administration (FDA) approved protocol, were included. INTERVENTIONS: Ninety patients who were not responding to conventional ventilation were changed to UHFV using a microcomputer-controlled device. MEASUREMENTS AND RESULTS: The patient's blood gas, hemodynamic, and airway pressure variables were measured just before, and at 1 and 24 h after the switch to UHFV. We demonstrated clinically significant improvements in arterial oxygen tension (PaO2) and reductions in peak and mean inspiratory pressures. CONCLUSIONS: In a multicenter study, UHFV improved respiratory gas exchange and reduced airway pressure variables at both 1 h and 24 h after the onset of UHFV when compared with conventional ventilation just prior to the change and without hemodynamic deterioration, in patients with severe ARDS.
Authors: Ali M Rashid; Charles Williams; Jason Noble; Omar M Rashid; Kazuaki Takabe; Rahul J Anand Journal: J Thorac Dis Date: 2012-12 Impact factor: 2.895
Authors: A Artigas; G R Bernard; J Carlet; D Dreyfuss; L Gattinoni; L Hudson; M Lamy; J J Marini; M A Matthay; M R Pinsky; R Spragg; P M Suter Journal: Intensive Care Med Date: 1998-04 Impact factor: 17.440