Guedel Oropharyngeal Airway (OPA) - All Adult and Paediatric Sizes

Guedel airways, also called oropharyngeal airways (OPAs), are a critical item for advanced trauma and medical response. They hold the tongue away from the posterior pharyngeal wall to keep the upper airway clear of obstruction in an unconscious patient without a gag reflex.

Colour-coded sizing

Each OPA is sized by its length in centimetres, measured from the corner of the patient's mouth to the angle of the jaw. Colour-coded bite blocks let you identify the right size at a glance in a time-critical setting.

• Paediatric sizes: 00, 0, 1, 2, 3
• Adult sizes: 4, 5, 6

Adult OPA sizes and selection

Size 4 (around 9 cm) is the most common fit for an average adult, with size 5 used for larger adults and size 6 reserved for very large adults. Always confirm fit against the individual patient before insertion, as an incorrectly sized airway can worsen obstruction.

Key features

• Full range of paediatric and adult sizes (00 through 6)
• Colour-coded bite blocks for fast size recognition
• Reinforced bite block to maintain airway patency
• Smooth, rounded edges to reduce mucosal trauma
• Individually packaged for hygienic single-patient use

Suited to ambulance services, emergency departments, GP clinics, aged-care facilities, dental rooms, and workplace first aid response kits. Order individual sizes to top up your kit, or stock the full range for clinical readiness.