Clinical impact of the accelerate PhenoTest® BC system on patients with gram-negative bacteremia and high risk of antimicrobial resistance: a prospective before-after implementation study

Table 2 analytical performance of AXDX vs. routine laboratory methods

			Control period	Intervention (AXDX) period	P value
Microbial identification	Time to identification, hrs, median (IQR)		30.4 (23.2–36.5)	21.6 (17.6–25)	< 0.0001
	Failure to identify bi-microbial bacteremia	Assay failure^a	NA	5
		Laboratory procedural failure^b	NA	1
Antimicrobial susceptibility testing	Time to result		44.9 (38-48.2)	28.1 (23.9–31)	< 0.0001
	Minor error		NA	18 (3.6%)
	Major error		NA	2 (0.4%)
	Very major error		NA	2 (0.4%)

^a Assay failure: AXDX detected only one of two organisms in the sample
^b Procedural failure: AXDX correctly detected the organism in the sample, but another blood culture bottle grew a different Gram-negative organism
Abbreviations: AXDX, Accelerate PhenoTest® BC system; IQR, interquartile range

ISSN: 1476-0711