Can’t intubate, can’t ventilate
Severe maxillofacial trauma
Bleeding in the upper airway that obscures your ability to see anatomy
Severe swelling/edema
Chemical or thermal burns
Surgical airway of choice for children younger than 12 years of age (due to the small airway and *increased risk of laryngeal injury with cricothyrotomy)
Diagnostic or surgical laryngoscopy requiring good exposure of the larynx, continuous control of airway patency, and immobility of the vocal cords where elective tracheostomy is not a good option. In this case usually high frequency<unk>  ventilation is used rather than manual<unk>  ventilation.
Pediatric jet ventilation
Bag valve mask ventilation
Extracorporeal membrane oxygenation
Mechanical ventilation 
Neonatal resuscitation
High frequency oscillation ventilation
Oxygen therapy
Noninvasive ventilation