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CORRESPONDENCE
Year : 2015  |  Volume : 33  |  Issue : 1  |  Page : 176
 

New intensive care unit and bacterial epidemiology


Intensive Care Unit, The Second Affiliated Hospital of Soochow University, Suzhou, China

Date of Submission01-Sep-2013
Date of Acceptance24-Apr-2014
Date of Web Publication5-Jan-2015

Correspondence Address:
S Q Yu
Intensive Care Unit, The Second Affiliated Hospital of Soochow University, Suzhou
China
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0255-0857.148414

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How to cite this article:
Yu S Q, Zhou H Q, Liu L J. New intensive care unit and bacterial epidemiology. Indian J Med Microbiol 2015;33:176

How to cite this URL:
Yu S Q, Zhou H Q, Liu L J. New intensive care unit and bacterial epidemiology. Indian J Med Microbiol [serial online] 2015 [cited 2019 Nov 13];33:176. Available from: http://www.ijmm.org/text.asp?2015/33/1/176/148414


Dear Editor,

The scientific design and reasonable layout of intensive care unit (ICU) are important factors for prevention and control of nosocomial infections. [1],[2],[3] The effect of construction of new ICU on epidemiology of pathogenic microorganisms, especially for multi-resistance bacteria, are little reported.

In this study, a retrospective analysis was conducted on the strains of pathogenic bacteria from clinical specimens before and after the construction of a new ICU in our hospital. The clinical specimens were collected from the old ICU, from July to December 2008 and newly constructed ICU, from July to December 2009, respectively. The number of beds in the newly constructed ICU doubled in comparison with the old ICU. In all, 260 and 108 patients in the newly constructed ICU and old ICU were investigated, respectively. There was no significant difference of sex ratio (male/female), average age, and  acute physiology and chronic health evaluation (APACHE II) score between the two groups. The number of clinical strains of pathogenic bacteria in the newly constructed ICU (1794) was twice more than the old ICU (702). The lower respiratory tract aspirate and bronchoalveolar lavage fluid, and the drainage fluids of thoracic and abdominal cavities were the main sources of strains of pathogenic bacteria. There was no significant difference between the strain sources in two groups (P > 0.05). The proportion of blood-borne strains of pathogenic bacteria in newly constructed ICU (5%, 87/1794) was higher than that in previous ICU (2%, 18/702) (P < 0.05). The reasons may be due to the use of double aerobic bottle in the old ICU, but the use of double aerobic bottle combined with anaerobic bottle in newly constructed ICU can enhance the detection rate of pathogenic bacteria. [4] The proportion of Gram-positive strains of pathogenic bacteria in new ICU (14%, 245/1794) was lower than that in previous ICU (18%, 127/702) (P < 0.05), but it is contrary to the Gram-negative strains of the pathogenic bacteria (80% and 73%, respectively; P < 0.05). The proportions of detected Methicillin-resistant Staphylococcus aureus (MRSA) and Enterococcus faecium in Gram-positive strains of pathogenic bacteria in new ICU (18%, 45/245; 1%, 3/245) were lower than that in previous ICU (42%, 53/127; 13%, 16/127), respectively (P < 0.05) [Table 1].
Table 1: Detection of gram - positive bacteria in two groups


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The construction of new ICU has significant effect on the bacterial epidemiology, and the scientific design, and reasonable layout of ICU are conducive to prevention and control of nosocomial infections.

 
 ~ References Top

1.
Teltsch DY, Hanley J, Loo V, Goldberg P, Gursahaney A, Buckeridge DL. Infection acquisition following intensive care unit room privatization. Arch Intern Med 2011;171:32-8.  Back to cited text no. 1
    
2.
Cepeda JA, Whitehouse T, Cooper B, Hails J, Jones K, Kwaku F, et al. Isolation of patients in single rooms or cohorts to reduce spread of MRSA in intensive-care units: Prospective two-centre study. Lancet 2005;365:295-304.  Back to cited text no. 2
    
3.
Cheng VC, Tai JW, Chan WM, Lau EH, Chan JF, To KK, et al. Sequential introduction of single room isolation and hand hygiene campaign in the control of methicillin-resistant Staphylococcus aureus in intensive care unit. BMC Infect Dis 2010;10:263.  Back to cited text no. 3
    
4.
Towns ML, Jarvis WR, Hsueh PR. Guidelines on Blood Cultures. J Microbiol Immunol Infect 2010;43:347-9.  Back to cited text no. 4
    



 
 
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