Chest Physiotherapy

In intensive care, respiratory physiotherapy is an integral part of the daily care of patients under invasive mechanical ventilation. Its goals are to improve the clearance of bronchial secretions to allow for the resolution of atelectasis and alveolar recruitment, thereby enhancing respiratory mechanics and gas exchange. The most widespread technique in France is external expiratory compression of the chest. The effectiveness of this technique depends on the selection of patients (it seems to be more effective in patients with higher secretion levels) and on the practical implementation of the technique (favoring brief and vigorous compressions at the beginning of expiration). However, the effect of the artificial ventilator settings, particularly the ventilatory mode used during the respiratory physiotherapy session, has never been evaluated. The two most commonly used ventilatory modes worldwide are Volume Assist Control Ventilation (V-ACV) and pressure support ventilation (PSV). In this unit, respiratory physiotherapy under artificial ventilation is performed daily on patients with artificial ventilation with abundant secretions, regardless of the ventilatory mode.

The goal of clinical trial study is to evaluate effect of chest physiotherapy educational on mother's knowledge, practice and clinical outcomes of infants aged less than 12 months diagnosed with bronchiolitis by physician The main questions aims to answer: * Does chest physiotherapy improve clinical outcomes of infants with bronchiolitis? * Does educational program improve mothers knowledge and practice regarding chest physiotherapy? Researcher compare two groups one receive routine hospital care (control group) other receive chest physiotherapy applied by mothers in addition to routine hospital care and will be followed up for 3 days