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患气道疾病的婴儿,因气管细小很难检查治疗。标准的小儿纤维支气管镜外径3.5～3.7mm,吸引管1.2mm,能用于小至700g的婴儿和大多数新生儿,藉镜周空隙仍能自然呼吸。普通支气管镜能通过的最小气管插管内径是4.5mm,用硬支气管镜或纤维支气管镜检查插了管的婴儿的下气道常需拔管。超细纤维支气管镜能通过内径为2.5mm的气管插管,此种支气管镜应用有限,但有重要的价值,是对标准纤维支气管镜和硬支气管镜的必要补充。美国Olympus公司生产的超细纤维支气管镜有两种:PF27M型,外径2.7mm和BF22型,外径
Infants with airway disease are difficult to check because of the small size of the trachea. Standard pediatric fiberoptic bronchoscopy diameter 3.5 ~ 3.7mm, suction tube 1.2mm, can be used for small to as little as 700g infants and most newborns, through the gap can still breathe through the perimeter. Ordinary bronchoscopy can pass through the smallest endotracheal tube diameter is 4.5mm, with hard bronchoscopy or bronchoscopy bronchoscopy insert the baby’s lower airway often extubation. Microfiber bronchoscopy through the endotracheal tube diameter of 2.5mm, such bronchoscopy is limited, but has important value, is the standard fiber bronchoscopy and bronchoscopy necessary complement. There are two types of microfiber bronchoscopes manufactured by Olympus in the United States: PF27M, 2.7mm OD and BF22, OD