Inclusion Criteria:  1.American Society of Anesthesiologist ASA physical status I-II patients. 2.Both genders. 3.Age18-60 years old 4.BMI <35 5.patients with El-Ganzouri score more than or equal to 4  Exclusion Criteria:  Presence of pulmonary diseases Uncontrolled hypertension Ischemic heart disease Cervical spine fracture Limited mouth opening known to have tumors or polyps in the upper airway History of difficult intubation or difficult bag-mask ventilation Patients with difficult bag-mask ventilation after induction of anesthesia