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Reevaluation of anaerobic blood cultures in a Veteran population
M T Chandler1, E S Morton, R P Byrd
1James H. Quillen VA Medical Center, Mountain Home, Tenn 37684-4000, USA.
Background:
Studies suggest that the selective use of anaerobic blood cultures may represent a more cost-effective laboratory approach when anaerobic bacterial infection is suspected.
Methods:
A 5-year retrospective study was done at a Veterans' Affairs hospital to determine the utility of routinely including anaerobic blood culture when sampling for bacteremia.
Results:
A total of 22,075 anaerobic blood cultures were collected from our adult population. Significant anaerobic pathogens were isolated from only 0.14% of these blood cultures. An anaerobic infection could have been suspected in 92% of our patients.
Conclusions:
Significant anaerobic bloodstream infections occurred in only 0.14% of blood cultures. In addition, the majority of the patients identified with anaerobic bacteremia had clinical conditions that would have suggested a high likelihood of anaerobic bacteremia. These observations suggest that selective rather than routine use of anaerobic blood cultures may be appropriate in a veteran population.
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