Salimi et al. studied the effect of standard care including sterile suctioning of tracheal tube, mouth wash, and oral suctioning every 4 h, body position change and chest postural drainage every 2 h, encouraging the patient to cough every 2 h, fixing the head elevation at 30°, and washing hands before administration of care programs on the incidence of VAP and reported that conducting long-term standard airway care (4 months) led to the reduction of VAP from 17.18 to 3.48.[29]