Figure 1.

The relationship of weaning rates, ICU mortality and durations of intubation. (a) Rate of successful weaning in patients who underwent tracheostomy after different durations of intubation. The rate of successful weaning declined when patients underwent tracheostomy after 21 days of intubation. (b) Intensive care unit (ICU) mortality rates in patients who underwent tracheostomy after different durations of intubation. The ICU mortality rates increased when the patients underwent tracheostomy after 21 days of intubation.