Analysis of risk infection factors on drainage set after expander transplantation

Objective To study the risk factors related to the infection with the soft tissue expander postoperatively, such as the time of drainage. Methods Thirty consecutive patients who underwent soft tissue expander involving set negative pressure drainage tube were studied. The samples were from the skin out of the drainage tube, the drainage tube out of skin and the end of drainage after 2, 4, 6, 8 days of the operation and at the time of removing the tube. Total samples were tested for bacteriology. Results A total of samples were 170, in which 5 cases wre positive and the detection rate was 2.9%. Bacterial dectection rate in the skin out of the drainage tube and the drainage tube out of the skin during were 9% from 5 to 8days. Dection rate at the end of the drainage is 33% between 7 and 8 days. Conclusions The time of the drainage tube set is an important factor that lead to infection. If it is set more than 7 days, retrograde infection risk will increase. Key words: Drainage;  Infection;  Risk factors;  Postoperative care