In a one year old child intubation is done using -

Pediatric Airway Management – Equipment Tracheal intubation remains the standard for airway maintenance during many procedures. Generally, a tracheal tube of the largest possible internal diameter should be chosen to minimize resistance to gas flow and avoid an excessive leak around the tube. It is important, however, to avoid inserting too large tube, which may cause mucosal damage. The length of the tube is calculated as: Length = + 12 cm For orotracheal intubation Length = + 15 cm For nasotracheal intubation Uncuffed tubes are used in children – as there is potential for mucosal damage with the cuffed tubes (with high volume, low pressure cuffs) In older children approaching puberty – Cuffed endotracheal tubes are used, reflecting the anatomical development of the airway. Endotracheal tubes are available in a variety of materials although the use of PVC and silicone rubber is now almost universal. As far as blades are concerned – A huge range of laryngoscopes blades are available. Anatomical considerations and to some extent personal choice, determine the most appropriate blade to use. In general position of the infant larynx and the long epiglottis makes intubation easier with a straight blade and are often used in children under 6 months of age. So from above description, it is clear that in children straight blade with uncuffed tube is the best for intubation. Ref. Scotts Brown 7/e vol 1 p 511