1. entilator weaning protocols may not be as useful in pediatrics as in adults. Systemic corticosteroids decrease the incidence of post extubation stridor and may reduce reintubation rates.
   撤机协议未必有像对于**那样对小儿也有效。全身性皮质激素（的使用）可降低拔管后哮喘发病率，也可减少再插管率。
2. Result Causes of dysfunction of PICC included staxis around stoma(38.4%),catheter blockage(26.0%),catheter displacement(13.7%),catheter defluxion(9.6%),extubation(8.2%) and local infection(4.1%).
   结果发生故障的主要原因有:穿刺口渗血(38.4%)、导管阻塞(26.0%)、导管移位(13.7%)、导管脱落(9.6%)、拨管(8.2%)和局部感染(4.1%)。

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