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Guedel Airway Our guedel airways are color-coded in order to make it easy to select the right size. These are used to prevent the tongue from sliding back and blocking the airway while the patient is under anesthesia. Further on, the patient can be artificially respirated through the guedel, or the tube can be placed next to the guedel to prevent it being bitten and blocked as the patient regains consciousness. These are available in sizes like 000,00,0,1,2,3 and 4.
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