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This abstract book was edited and corrected by the members of the Congress Committee of the French Intensive Care Society:. Rationale: Expiratory muscles has recently been stated as the «neglected component» in mechanically ventilated patient. Several authors stated these muscles importance in cough capacity, contractile efficiency of the diaphragm or reduction of hyperinflation. However, few studies reported potential factors leading to expiratory muscle weakness and its importance on weaning success or survival after mechanical ventilation.
Patients and methods: This study is a secondary analysis of our previously described cohort of patients ventilated for at least 24 h assessed for respiratory muscles function. Maximal expiratory pressure MEP measurement was carried out during spontaneous breathing trial using a manometer with an unidirectional valve.
Inversely, higher body mass index was associated with higher MEP. No other outcomes were different between groups. Discussion: Possible explanation is that contrary to inspiratory muscle weakness, cough inefficacy after weaning from mechanical ventilation could be managed with cough supplementation techniques i.
Conclusion: In our cohort, MEP was not associated with mechanical ventilation weaning or death. Despite our results, different clinical techniques for quantifying expiratory muscle weakness may provide more beneficial results. Rationale: It is increasingly recognized that identification of muscle weakness in ICU should be as early as possible.
