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- Title
Automatic selection of breathing pattern using adaptive support ventilation.
- Authors
Arnal, Jean-Michel; Wysocki, Marc; Nafati, Cyril; Donati, Stéphane; Granier, Isabelle; Corno, Gaëlle; Durand-Gasselin, Jacques
- Abstract
In a cohort of mechanically ventilated patients to compare the automatic tidal volume ( V T)–respiratory rate (RR) combination generated by adaptive support ventilation (ASV) for various lung conditions. Prospective observational cohort study in the 11-bed medicosurgical ICU of a general hospital. 243 patients receiving 1327 days of invasive ventilation on ASV. Daily collection of ventilator settings, breathing pattern, arterial blood gases, and underlying clinical respiratory conditions categorized as: normal lungs, ALI/ARDS, COPD, chest wall stiffness, or acute respiratory failure. Overall the respiratory mechanics differed significantly with the underlying conditions. In passive patients ASV delivered different V T–RR combinations based on the underlying condition, providing higher V T and lower RR in COPD than in ALI/ARDS: 9.3 ml/kg (8.2–10.8) predicted body weight (PBW) and 13 breaths/min (11–16) vs. 7.6 ml/kg (6.7–8.8) PBW and 18 breaths/min (16–22). In patients actively triggering the ventilator the V T–RR combinations did not differ between COPD, ALI/ARDS, and normal lungs. ASV selects different V T–RR combinations based on respiratory mechanics in passive, mechanically ventilated patients.
- Subjects
ARTIFICIAL respiration; RESPIRATORY insufficiency; RESPIRATION; RESPIRATORY therapy; CRITICAL care medicine
- Publication
Intensive Care Medicine, 2008, Vol 34, Issue 1, p75
- ISSN
0342-4642
- Publication type
Article
- DOI
10.1007/s00134-007-0847-0