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Table 5 Potential improvement in adequacy of empiric coverage for catheter-related bloodstream infection at 12 h, 24 h, and 48 h using WISCA empiric regimens

From: Weighted-incidence syndromic combination antibiograms to guide empiric treatment of critical care infections: a retrospective cohort study

WISCA empiric regimens

Percentage of CRBSI with documented adequate coverage by this regimen (n = 56)

Excess percentage of adequate coverage compared to retrospective cohort

  

12 h

24 h

48 h

Monotherapy

    

Ciprofloxacin

28 (50%)

+20%

+2%

-21%

Tobramycin

20 (36%)

+6%

-12%

-35%

Ceftriaxone

18 (32%)

+2%

-16%

-39%

Ceftazidime

19 (34%)

+4%

-13%

-37%

Pip.-tazo.

29 (52%)

+22%

+4%

-19%

Ertapenem

23 (41%)

+11%

-7%

-30%

Meropenem

30 (54%)

+24%

+6%

-17%

Cloxacillin

1 (2%)

-28%

-47%

-69%

Vancomycin

31 (55%)

+25%

+7%

-16%

Linezolid

32 (57%)

+27%

+9%

-14%

Dual-combination therapy

    

Meropenem + Vancomycin*

53 (95%)

+65%

+47%

+24%

Ertapenem + Vancomycin

50 (89%)

+59%

+42%

+18%

Pip.-Tazo. + Vancomycin*

52 (93%)

+63%

+45%

+22%

Ceftazidime + Vancomycin*

52 (93%)

+63%

+45%

+22%

Ceftriaxone + Vancomycin

49 (88%)

+58%

+40%

+17%

Ciprofloxacin + Vancomycin

52 (93%)

+63%

+45%

+22%

Tobramycin + Vancomycin

50 (89%)

+59%

+41%

+18%

Ciprofloxacin + Cloxacillin

35 (63%)

+33%

+15%

-8%

Tobramycin + Cloxacillin

23 (41%)

+11%

-7%

-30%

Meropenem + Tobramycin

32 (57%)

+27%

+9%

-14%

Ertapenem + Tobramycin

33 (59%)

+29%

+11%

-12%

Pip.-Tazo. + Tobramycin

32 (57%)

+27%

+9%

-14%

Ceftazidime + Tobramycin

23 (41%)

+11%

-7%

-30%

Ceftriaxone + Tobramycin

23 (41%)

+11%

-7%

-30%

Meropenem + Ciprofloxacin

42 (75%)

+45%

+27%

+4%

Ertapenem + Ciprofloxacin

43 (77%)

+47%

+29%

+6%

Pip.-Tazo. + Ciprofloxacin

42 (75%)

+45%

+27%

+4%

Ceftazidime + Ciprofloxacin

37 (66%)

+36%

+18%

-5%

Ceftriaxone + Ciprofloxacin

37 (66%)

+36%

+18%

-5%

Ciprofloxacin + Tobramycin

36 (64%)

+34%

+16%

-7%

  1. WISCA, weighted incidence syndromic combined antibiogram; VAP, ventilator-associated pneumonia; CRBSI, catheter-related bloodstream infection; Pip.-Tazo., piperacillin-tazobactam. *Regimens that would be considered concordant with Infectious Diseases Society of America CRBSI treatment guidelines.