Effects of Non-invasive Ventilation on Function Diaphragmatic and Caval Distension

Ventilation support that does not require an artificial airway that aims to reverse respiratory muscle fatigue and decrease the work of the respiratory muscles, maintaining a positive pressure, allows alveolar recruitment, preventing atelectasis and airway collapse. NIV can be administered using continuous positive airway pressure (CPAP) or two levels of airway pressure (Bi-level).