Comparison of effect of dexmedetomidine and midazolam in icu patients who put on mechanical ventilation and show agitation on weaning.Selection of better agent minimises the drug related side effects like respiratory depression but also helps in weaning for early extubation,give hemodynamic stability and reduce morbidity and mortality in icu..

Inclusion Criteria:

• all patients with age <60 irrespective of gendre

Exclusion Criteria:

- Patients who refuse to give consent, severely altered conscious level (GCS < 8/15), traumatic injury causing hypoxemia e.g., severe head / chest / facial trauma or pneumothorax, severe pneumonia, arrhythmia, impaired hearing or blindness, severe hepatic or renal disease, on neuromuscular blocking agents, recent myocardial infarction, use of anti-psychotics, hypersensitivity to any of the drug under study.