Ventilator-associated pneumonia (VAP) is the most common health care-associated infection. To prevent this
complication, aspiration of subglottic secretions using Hi-Lo Evac endotracheal tube (Evac ETT) is a recommended intervention.
However, there are some reports on Evac ETT dysfunction. We aimed to compare the incidence of VAP (per ventilated patients)
in severely ill poisoned patients who were intubated using Evac ETT versus conventional endotracheal tubes (C-ETT) in our
toxicology ICU.Materials and Methods. In this clinical randomized trial, 91 eligible patients with an expected duration of mechanical
ventilation of more than 48 hours were recruited and randomly assigned into two groups: (1) subglottic secretion drainage (SSD)
group who were intubated by Evac ETT (