Results: Out offifty patients included in the study forty one patients in both studied groups were weaned successfully according to their ABG data and weaning indices.
APACHE II score showed no signficant difference in both groups.
There were statistically signficant differences between the groups in term of, duration of mechanical ventilation, weaning hours and length of ICU stay being shorter in (group 1) weaned by ASV.
Re-intubation and mortality rate were higher in (group 11) weaned by conventional PSV, however the differences were not signficant.