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  • Title: Blood culture quality improvement: a College of American Pathologists Q-Probes study involving 909 institutions and 289 572 blood culture sets.
    Author: Schifman RB, Bachner P, Howanitz PJ.
    Journal: Arch Pathol Lab Med; 1996 Nov; 120(11):999-1002. PubMed ID: 12049115.
    Abstract:
    OBJECTIVE: To evaluate solitary blood culture (SBC) collections as a preanalytic quality indicator of blood culture practice. DESIGN AND SETTING: Two College of American Pathologists Q-Probes laboratory quality improvement studies involving prospective evaluation of the proportion of and reasons for SBC collections in 909 institutions. OUTCOME: Reduction in the proportion of SBCs. RESULTS: Of 289572 blood culture sets studied, the median proportion of SBCs per institution was 10.1% and 12.1% among adult inpatients, 25.4% and 33.3% among adult outpatients, and 89.0% and 100% among pediatric/infant patients in the first and second (follow-up) studies, respectively. The two most common reasons for not performing a second culture in adults were (1) test not indicated and (2) physician believed one was sufficient. When compared with inpatient cultures, a significantly higher proportion of outpatient SBCs were classified as not indicated (P < .0001). Among 198 institutions participating in both studies, a significant decline in SBC rates was observed in the subgroup (n = 50) that continued to monitor SBCs (P = .004). CONCLUSIONS: Interinstitutional evaluation of solitary blood cultures provides a benchmark for quality assessment and an opportunity for performance improvement in blood culture specimen collections.
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