Inclusion Criteria:  We will include 64 patients planned for foreign body removal by rigid bronchoscope. All patients will be ASA І Recent FB aspiration in the last 72hrs either by history or documented by radiopaque shadow in chest X ray or CT scan.  Exclusion Criteria:  Patients age not more than 40 years old. Body weight less than 40 kg. Critically ill patients. Intubated patients. Inhalation of FB more than 72 hrs.