Recognition of difficult airway is purported to be the most important factor in successful management of difficult airway. The incidence of difficult airway in pediatrics is much less than in adults; however, airway related complications can lead to hypoxic brain damage or even death especially in younger age groups as neonates and infants.The aim of this work is to evaluate the feasibility and accuracy of ultrasound measurements (hyomental distances, tongue measurements, and anterior neck soft tissue thickness at the level of hyoid bone, thyrohyoid membrane, and thyroid cartilage) in predicting difficult laryngoscopy and difficult mask ventilation in pediatric patients undergoing elective surgery under general anesthesia.

Inclusion Criteria:

• Gender both males and females
• ASA Class I and II
• Age 1month to 10 years
• Children undergoing elective surgery under general anaesthesia

Exclusion Criteria:

• congenital upper airway malformation,
• head and neck swellings,
• scars,
• radiation to the neck,
• tracheotomy,
• Neurosurgical or cardiac procedures
• ENT surgeries

A total of 584 consecutive pediatric patients, aged one month-10 years scheduled for elective surgery under general anesthesia will be included in the study.