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Bacterial Contamination of Hospital-Prepared Enteral Tube Feeding Formulas in Isfahan, Iran



Jalali M1 ; Sabzghabaee AM2 ; Badri SS2 ; Soltani HA3 ; Maracy MR4
Authors
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Authors Affiliations
  1. 1. Department of Nutrition, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
  2. 2. Department of Clinical Pharmacy and Pharmacy Practice, School of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran
  3. 3. Department of Anesthesiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
  4. 4. Department of Community Medicine, Isfahan University of Medical Sciences, Isfahan, Iran

Source: Journal of Research in Medical Sciences Published:2009

Abstract

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 101 cfu/g. Also, 68 samples (90%) had S. aureus contamination greater than 101 cfu/g. In standard plate count, 74 samples (97%) had counts greater than 103 cfu/ g, while 54 samples (71%) had counts greater than 104 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 101 cfu/g. Also, 72 samples (95%) had S. aureus contamination, 98.6% of these contaminated samples had counts greater than 102 cfu/g. In standard plate count, 74 samples (97%) had counts greater than 104 cfu/g. No Salmonella or Listeria was detected from samples. Conclusion: 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.
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