Document Detail

Use of the nonwire central line hub to reduce blood culture contamination.
MedLine Citation:
PMID:  23187312     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: The sterile conditions used when inserting a central venous catheter (CVC) might be thought to decrease the contamination rate of blood cultures taken at CVC insertion; however, a previous retrospective study showed the opposite, that such blood cultures are contaminated more frequently than peripheral venipuncture blood cultures. The current study explored whether use of the CVC nonwire hub as a source of blood cultures decreased contamination while maintaining detection of true pathogens.
METHODS: A prospective, observational study was performed from June 2010 to May 2011 in the general ICU of an academic, tertiary referral center. The proportions of blood cultures taken from wire and nonwire CVC hubs growing contaminants and true pathogens were compared. Risk factors for blood culture contamination were identified, and multivariate analysis was used to identify independent predictors of blood culture contamination.
RESULTS: Among 313 blood cultures taken from 227 CVCs in 139 patients, 27 of 141 wire hub (19%) vs nine of 172 nonwire hub (5%) cultures were contaminated (P < .001). Only hub of blood culture origin was associated with contamination on multivariate analysis (OR, 4.3; 95% CI, 1.9-9.5; P < .001). True pathogens grew in 19 of 141 wire hub (13%) vs 27 of 172 nonwire hub (16%) cultures (P = .581).
CONCLUSIONS: A higher proportion of blood cultures taken from the CVC lumen exposed to the guidewire were contaminated when compared with nonwire hub cultures; detection of true pathogens was equivalent. To limit detrimental sequelae of blood culture contamination, blood cultures obtained at CVC insertion should be taken from the nonwire hub.
Phillip D Levin; Josh Moss; Sheldon Stohl; Elchanan Fried; Matan J Cohen; Charles L Sprung; Shmuel Benenson
Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Chest     Volume:  143     ISSN:  1931-3543     ISO Abbreviation:  Chest     Publication Date:  2013 Mar 
Date Detail:
Created Date:  2013-03-06     Completed Date:  2013-07-08     Revised Date:  2014-03-20    
Medline Journal Info:
Nlm Unique ID:  0231335     Medline TA:  Chest     Country:  United States    
Other Details:
Languages:  eng     Pagination:  640-5     Citation Subset:  AIM; IM    
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MeSH Terms
Blood Specimen Collection / methods*
Catheter-Related Infections / epidemiology
Catheterization, Central Venous / adverse effects,  methods*
Catheterization, Peripheral / adverse effects
Multivariate Analysis
Prospective Studies
Sepsis / prevention & control*
Comment In:
Chest. 2014 Feb;145(2):430-1   [PMID:  24493542 ]
Chest. 2014 Feb;145(2):431   [PMID:  24493543 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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