Effect of Adding PNF to IMT on Weaning Off MV

Brief Summary

the goal of this clinical trial is to find out the effect of adding proprioceptive neuromuscular facilitation to inspiratory muscle training on weaning off mechanical ventilation. the main question it aims to answer is is there a significant difference in the effect of inspiratory muscle training combined with PNF on the duration of weaning in the mechanically ventilated ICU patients. researchers will compare effect of (Inspiratory muscle training combined with PNF) to (Inspiratory muscle training) and control group. participants will be mechanically ventilated both sexes patients will be recruited in this study from intensive care unit, their ages older than 18 years. The selected patients will be mechanically ventilated due to respiratory failure and will randomly assigned into three equal groups.