Cardiac, Pulmonary and Diaphragm Sonography for the Early Diagnosis of the Different Etiologies Underlying Failure of Weaning From Mechanical Ventilation

Weaning patients off ventilation in an ICU is sometimes difficult, because of three major inter-related etiologies: impaired lung, heart and diaphragm function. In this context, ultrasonography during tests to wean patients off ventilation could make it possible to diagnose cardiac dysfunction, a loss of pulmonary aeration or diaphragm dysfunction and thus reduce the number of failures at extubation. The study will be carried out in 100 patients on mechanical ventilation following abdominal or heart surgery, who will have echocardiography, and pulmonary and diaphragm ultrasonography.