Frequence of Dressing Change and Bacterial Colonization in Pediatric Intensive Care Unit

The first dressing change and sampling were completed 24 hours after catheterization in the operating room or PICU.When bedside nurse remove the dressing ,the researchers used 4 normal saline cotton swabs to wipe the skin under the dressing. Taking the puncture point as the center, 4 cotton swabs wipes 4 points in the northwest, northeast, Southeast and northeast direction 1cm away from the puncture point,separately.Then the specimen delivered to Laboratory..Then the second dressing change and sampling were completed 7days later(if there is no clinical indication occur,such leaking,blood).

The first dressing change and sampling were completed 7 days after catheterization in the operating room or PICU.When bedside nurse remove the dressing ,the researchers used 4 normal saline cotton swabs to wipe the skin under the dressing. Taking the puncture point as the center, 4 cotton swabs wipes 4 points in the northwest, northeast, Southeast and northeast direction 1cm away from the puncture point,separately.Then the specimen delivered to Laboratory..(if there is no clinical indication occur,such leaking,blood).