Background.
Blood culture
contamination is a clinically significant problem that results in
patient harm and excess cost.
Methods.
In a prospective,
controlled trial at an academic center Emergency Department, a device
that diverts and sequesters the initial 1.5–2 mL portion of blood
(which presumably carries contaminating skin cells and microbes) was
tested against standard phlebotomy procedures in patients requiring
blood cultures due to clinical suspicion of serious infection.
Results.
In sum, 971 subjects
granted informed consent and were enrolled resulting in 904
nonduplicative subjects with 1808 blood cultures. Blood culture
contamination was significantly reduced through use of the initial
specimen diversion device™ (ISDD) compared to standard procedure:
(2/904 [0.22%] ISDD vs 16/904 [1.78%] standard practice, P = .001).
Sensitivity was not compromised: true bacteremia was noted in 65/904
(7.2%) ISDD vs 69/904 (7.6%) standard procedure, P = .41. No
needlestick injuries or potential bloodborne pathogen exposures were
reported. The monthly rate of blood culture contamination for all
nurse-drawn and phlebotomist-drawn blood cultures was modeled using
Poisson regression to compare the 12-month intervention period to the
6 month before and after periods. Phlebotomists (used the ISDD)
experienced a significant decrease in blood culture contamination
while the nurses (did not use the ISDD) did not. In sum, 73% of
phlebotomists completed a post-study anonymous survey and widespread
user satisfaction was noted.
Conclusions.
Use of the ISDD was
associated with a significant decrease in blood culture contamination
in patients undergoing blood cultures in an Emergency Department
setting.
No comments:
Post a Comment