摘要
目的 采用医用橡胶导尿管被覆银后观察对ATCC 2 5 92 2大肠埃希氏菌、ATCC 2 5 92 3金黄色葡萄球菌、ATCC 2 785 3绿脓假单胞菌和ATCC 9372枯草杆菌黑色变种的体外杀菌作用。方法 将 1× 1 0 5/ml菌悬液与剪成 2cm长的表面被覆有含 1mg金属银的医用橡胶导尿管接触 ,在 8个时间梯度分别吸取菌悬液做菌落计数 ,同时用 5 %脱纤维羊血吸附残留银成份后 ,在摄氏 35℃的温度下培养 2 4小时 ,观察细菌生长结果。结果 被覆银导尿管对大肠埃希氏菌、绿脓假单胞菌和金黄色葡萄球菌具有很强的杀灭作用 ,且存在着一定的浓度、时间量效关系 ,对枯草杆菌黑色变种芽胞的杀灭效果不理想。结论 被覆银导尿管具有较高的临床应用价值 ,留置导尿管在 3天以上的病人 ,可减少长期留置普通导尿管引起泌尿道感染所带来的痛苦。
Objectives The aim of this experiment is to test the bactericidal power outside of the human body of silver-covered urinary catheter with killing ATC 25922 Escherichia coli,ACTT 25923 Staphylococcus aureus,ACTT 27853 Pseudomonas aeruginosa and ATCC 9372 Bacillus subtilis.Methods Put 2 centimeters silver-covered urinary catheter that contains with 1mg silver per square centimeters in bacterial suspensions of the four kinds bacteria mentioned above.The next step is to do a colony count at 8 time gradient.At the same time,incubate the four bacteria for 24 hours at the temperature of 35 centigrade after residual sliver was absorbed by 5 per cent defibrinated sheep blood.Results With the exception of ATCC 9372 Bacillus subtitles,the bactericidal power of silver-covered urinary catheter with killing ATCC 25922 Escherichia coli,ACTT 25923 Staphylococcus aureus,ACTT 27853 Pseudomonas aeruginosa is great,and there is a correlation existence between the concentration and time effect.Conclusions The silver-covered urinary catheter will be of great value to use in clinical work,especially for those patients who have to have an indwelling catheter for more than three days.Using silver-covered urinary catheter not only decreases the suffering of patients resulting from secondary urinary tract infections using common urinary catheters for more than three days,but alsosave the expenditure of hospitalization.
出处
《宁夏医学杂志》
CAS
2000年第10期580-581,共2页
Ningxia Medical Journal