BACKGROUND: Assist/control (A/C) ventilation may induce delirium in patients with acute respiratory distress syndrome (ARDS). We conducted a trial to determine whether initial synchronized intermittent mandatory ventilation with pressure support (SIMV + PS) could improve clinical outcomes in these patients. METHODS:Intubated patients with moderate ARDS were enrolled and we compared SIMV + PS with A/C. Identical sedation, analgesia and ventilation strategies were performed. The co-primary outcomes were early (≤72 h) partial pressure of arterial oxygen to fraction of inspired oxygen (PaO2/FiO2) and incidence of delirium. The secondary outcomes were all-cause in-hospital mortality, dosages of analgesics and sedatives, incidence of patient-ventilator asynchrony, and duration of mechanical ventilation and hospital stay. RESULTS: We screened 2,684 patients and 40 patients were enrolled in our study. In SIMV + PS, early (≤72 h) PaO2/FiO2 was greater improved than that at baseline and that in A/C (P<0.05) with lower positive end-expiratory pressure (PEEP) (8.7±3.0 vs. 10.3±3.2, P<0.001) and FiO2 (58%±18% vs. 67%±19%, P<0.001). We found more SIMV + PS success (defined as SIMV + PS successfully applied without switching to A/C) (100.0% vs. 16.7%, P<0.001), less male (46.3% vs. 85.7%, P=0.015) and pulmonary etiology of ARDS (53.8% vs. 92.9%, P=0.015), and lower PEEP (9.1±3.1 vs. 10.3±3.3, P=0.004) and FiO2 (58%±19% vs. 71%±19%, P<0.001) in survival patients. However, there were no significant differences in incidence of delirium and mortality, dosages of analgesics and sedatives, incidence of patient-ventilator asynchrony, duration of mechanical ventilation and hospital stay (P>0.05). CONCLUSIONS: In patients with moderate ARDS, SIMV + PS can safely and effectively improve oxygenation, but does not decrease mortality, incidence of delirium and patient-ventilator asynchrony, dosages of analgesics and sedatives, and duration of mechanical ventilation and hospital stay.
RCT Entities:
BACKGROUND: Assist/control (A/C) ventilation may induce delirium in patients with acute respiratory distress syndrome (ARDS). We conducted a trial to determine whether initial synchronized intermittent mandatory ventilation with pressure support (SIMV + PS) could improve clinical outcomes in these patients. METHODS: Intubated patients with moderate ARDS were enrolled and we compared SIMV + PS with A/C. Identical sedation, analgesia and ventilation strategies were performed. The co-primary outcomes were early (≤72 h) partial pressure of arterial oxygen to fraction of inspired oxygen (PaO2/FiO2) and incidence of delirium. The secondary outcomes were all-cause in-hospital mortality, dosages of analgesics and sedatives, incidence of patient-ventilator asynchrony, and duration of mechanical ventilation and hospital stay. RESULTS: We screened 2,684 patients and 40 patients were enrolled in our study. In SIMV + PS, early (≤72 h) PaO2/FiO2 was greater improved than that at baseline and that in A/C (P<0.05) with lower positive end-expiratory pressure (PEEP) (8.7±3.0 vs. 10.3±3.2, P<0.001) and FiO2 (58%±18% vs. 67%±19%, P<0.001). We found more SIMV + PS success (defined as SIMV + PS successfully applied without switching to A/C) (100.0% vs. 16.7%, P<0.001), less male (46.3% vs. 85.7%, P=0.015) and pulmonary etiology of ARDS (53.8% vs. 92.9%, P=0.015), and lower PEEP (9.1±3.1 vs. 10.3±3.3, P=0.004) and FiO2 (58%±19% vs. 71%±19%, P<0.001) in survival patients. However, there were no significant differences in incidence of delirium and mortality, dosages of analgesics and sedatives, incidence of patient-ventilator asynchrony, duration of mechanical ventilation and hospital stay (P>0.05). CONCLUSIONS: In patients with moderate ARDS, SIMV + PS can safely and effectively improve oxygenation, but does not decrease mortality, incidence of delirium and patient-ventilator asynchrony, dosages of analgesics and sedatives, and duration of mechanical ventilation and hospital stay.
Authors: Timothy D Girard; James C Jackson; Pratik P Pandharipande; Brenda T Pun; Jennifer L Thompson; Ayumi K Shintani; Sharon M Gordon; Angelo E Canonico; Robert S Dittus; Gordon R Bernard; E Wesley Ely Journal: Crit Care Med Date: 2010-07 Impact factor: 7.598
Authors: E W Ely; S K Inouye; G R Bernard; S Gordon; J Francis; L May; B Truman; T Speroff; S Gautam; R Margolin; R P Hart; R Dittus Journal: JAMA Date: 2001-12-05 Impact factor: 56.272
Authors: Andrés Esteban; Antonio Anzueto; Fernando Frutos; Inmaculada Alía; Laurent Brochard; Thomas E Stewart; Salvador Benito; Scott K Epstein; Carlos Apezteguía; Peter Nightingale; Alejandro C Arroliga; Martin J Tobin Journal: JAMA Date: 2002-01-16 Impact factor: 56.272
Authors: E Wesley Ely; Ayumi Shintani; Brenda Truman; Theodore Speroff; Sharon M Gordon; Frank E Harrell; Sharon K Inouye; Gordon R Bernard; Robert S Dittus Journal: JAMA Date: 2004-04-14 Impact factor: 56.272
Authors: Bryce Rh Robinson; Thomas C Blakeman; Peter Toth; Dennis J Hanseman; Eric Mueller; Richard D Branson Journal: Respir Care Date: 2013-03-19 Impact factor: 2.258
Authors: V Marco Ranieri; Gordon D Rubenfeld; B Taylor Thompson; Niall D Ferguson; Ellen Caldwell; Eddy Fan; Luigi Camporota; Arthur S Slutsky Journal: JAMA Date: 2012-06-20 Impact factor: 56.272
Authors: Thais Bruno de Godoi; Fernando Augusto Lima Marson; Camila Vantini Capasso Palamim; Gianna Carla Cannonieri-Nonose Journal: Intern Emerg Med Date: 2020-07-17 Impact factor: 3.397
Authors: J Juschten; P R Tuinman; T Guo; N P Juffermans; M J Schultz; S A Loer; A R J Girbes; H J de Grooth Journal: Intensive Care Med Date: 2021-03-13 Impact factor: 17.440