Almeyda R, Shahzad A, Bleach N
Clin Otolaryngol. 2007 Dec;32(6):480-3. doi: 10.1111/j.1749-4486.2007.01489.x.
To determine the best Foley catheter and inflation fluid for post-nasal packing.
Experimental study.
District General Hospital (Wexham Park Hospital).
108 latex and 108 silicone catheters were directly compared.
Catheters were analysed according to the inflation fluid instilled and the use of an umbilical clamp. Analysis occurred at 24, 36, 48 and 72 h periods after being placed in humidified incubator at 37 degrees C. The main outcome measure was whether deflation was possible at specified times. The secondary outcome measure was an attempt to identify the failure point in those catheters that failed to deflate.
Air was found to be an unsuitable inflation fluid for either silicone or latex catheters due to a 100% spontaneous deflation rate within a 24-h period. Silicone catheters were found to be 100% reliable when inflated with water or saline, irrespective of the use of a clamp. Latex catheters were unreliable with an overall failure rate of 30%. This high failure rate was related both to the use of an umbilical clamp to secure the catheter and to the use of saline as the inflation medium.
Firstly, air should not be used for inflation of catheters unless specified in manufacturer's instructions. Secondly, when Foley catheters are used for post-nasal packing, silicone should be considered the first choice of catheter type. If not available, latex ones may be used but should be inflated with water and secured with a non-crushing clamp at the alar rim.
确定用于后鼻孔填塞的最佳Foley导管及充盈液。
实验研究。
区综合医院（韦克斯汉姆公园医院）。
直接比较108根乳胶导管和108根硅胶导管。
根据注入的充盈液及是否使用脐带夹对导管进行分析。将导管置于37℃的加湿培养箱中，分别在24、36、48和72小时后进行分析。主要观察指标是在特定时间是否能够放气。次要观察指标是尝试确定那些未能放气的导管的故障点。
发现空气不适用于硅胶或乳胶导管的充盈，因为在24小时内自发放气率为100%。发现用水或盐水充盈时，硅胶导管100%可靠，无论是否使用夹子。乳胶导管不可靠，总故障率为30%。这种高故障率既与使用脐带夹固定导管有关，也与使用盐水作为充盈介质有关。
首先，除非制造商说明书中有规定，否则不应使用空气充盈导管。其次，当使用Foley导管进行后鼻孔填塞时，应考虑硅胶导管作为首选类型。如果没有硅胶导管，也可使用乳胶导管，但应用水充盈，并在鼻翼边缘用无损伤夹固定。
