伊朗伊斯法罕医院自制肠内营养管饲配方的细菌污染情况。
Bacterial contamination of hospital-prepared enteral tube feeding formulas in Isfahan, Iran.
作者信息
Jalali Mohammad, Sabzghabaee Ali Mohammad, Badri Shirin Sadat, Soltani Hasan Ali, Maracy Mohammad Reza
机构信息
Department of Nutrition, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran.
出版信息
J Res Med Sci. 2009 May;14(3):149-56.
BACKGROUND
Hospital-prepared tube feedings from three intensive care units of two hospitals in Isfahan, Iran were analyzed for microbial contamination.
METHODS
A total number of 152 samples (76 samples each at the time of preparation and 18 hours following preparation) were collected. Standard plate count, coliform count and Staphylococcus aureus count for all samples were conducted. Samples were analyzed also for the presence of Salmonella spp. and Listeria spp.
RESULTS
At the time of food preparation, out of 76 samples, 53 samples (70%) had coliform contamination and 87% of these contaminated samples had counts greater than 10(1) cfu/g. Also, 68 samples (90%) had S. aureus contamination greater than 10(1) cfu/g. In standard plate count, 74 samples (97%) had counts greater than 10(3) cfu/g, while 54 samples (71%) had counts greater than 10(4) cfu/g. In second sampling occasion, out of 76 samples, 68 samples (90%) had coliform contamination and 84% of these contaminated samples had counts greater than 10(1) cfu/g. Also, 72 samples (95%) had S. aureus contamination, 98.6% of these contaminated samples had counts greater than 10(2) cfu/g. In standard plate count, 74 samples (97%) had counts greater than 10(4) cfu/g. No Salmonella or Listeria was detected from samples.
CONCLUSIONS
The results indicated that a majority of the blenderized enteral tube feedings in those hospitals are not safe. In comparison to the standard limits, these enteral tube feedings are highly contaminated and posed substantial risk for developing a foodborne disease or nosocomial infection.
背景
对伊朗伊斯法罕两家医院三个重症监护病房自制的管饲流食进行微生物污染分析。
方法
共采集152份样本（制备时和制备后18小时各76份）。对所有样本进行标准平板计数、大肠菌群计数和金黄色葡萄球菌计数。还对样本进行沙门氏菌属和李斯特菌属检测。
结果
食物制备时，76份样本中53份（70%）有大肠菌群污染，其中87%的污染样本计数大于10¹ cfu/g。此外，68份样本（90%）有金黄色葡萄球菌污染且计数大于10¹ cfu/g。标准平板计数中，74份样本（97%）计数大于10³ cfu/g，54份样本（71%）计数大于10⁴ cfu/g。第二次采样时，76份样本中68份（90%）有大肠菌群污染，其中84%的污染样本计数大于10¹ cfu/g。此外，72份样本（95%）有金黄色葡萄球菌污染，其中98.6%的污染样本计数大于10² cfu/g。标准平板计数中，74份样本（97%）计数大于10⁴ cfu/g。样本中未检测到沙门氏菌或李斯特菌。
结论
结果表明，那些医院的大多数搅拌型肠内管饲流食不安全。与标准限值相比，这些肠内管饲流食污染严重，有引发食源性疾病或医院感染的重大风险。
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