Effects of Endotracheal Tube Cuff Pressure Control on Microaspiration of Gastric Contents

Inclusion Criteria: * Volunteering of the patient or relatives who will participate in the study, * Patients who require mechanical ventilation support with endotracheal tube supply for 48 hours. Exclusion Criteria: * Patients who are contraindicated in giving a semi-fowler position, * Patients with enteral nutrition contraindications, * Patients connected to mechanical ventilators for more than 48 hours, * Patients with tracheostomy, * Patients admitted to ICU for gastroesophageal reflux disease, aspiration pneumonia or suspicion, * Nasal endotracheal intubation.