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. 2021 Dec 21;9(4):E1242–E1251. doi: 10.9778/cmajo.20200274

Table 4:

Rate of antimicrobial use to treat multidrug-resistant organisms, by region

Multidrug-resistant organism Region; no. (%) of patients treated for multidrug-resistant organisms*
Total
n = 1470
Region
West
n = 535
Central
n = 716
Atlantic
n = 219
MRSA 82 (5.6) 51 (9.5) 30 (4.2) 1 (0.5)
MRCoNS 33 (2.2) 12 (2.2) 18 (2.5) 3 (1.4)
VRE 10 (0.7) 4 (0.7) 6 (0.8) 0
ESBL-producing Enterobacteriaceae 41 (2.8) 22 (4.1) 11 (1.5) 8 (3.7)
3-ceph 60 (4.1) 26 (4.9) 19 (2.7) 15 (6.8)
CRE 5 (0.3) 5 (0.9) 0 0
ESBL-NF 22 (1.5) 12 (2.2) 9 (1.3) 1 (0.5)
CR-NF 25 (1.7) 9 (1.7) 13 (1.8) 3 (1.4)
Other multidrug-resistant organism 75 (5.1) 45 (8.4) 24 (3.4) 6 (2.7)

Note: 3-ceph = third-generation cephalosporin-resistant Enterobacterales, CRE = carbapenem-resistant Enterobacterales, CR-NF = carbapenem-resistant nonfermenter Gram-negative bacilli, ESBL = extended-spectrum β-lactamase, ESBL-NF = ESBL-producing nonfermenter gram-negative bacilli, MRCoNS = methicillin-resistant coagulase-negative staphylococci, MRSA = methicillin-resistant Staphylococcus aureus, VRE = vancomycin-resistant enterococci.

*

The denominator for the percentages in this table is the number of patients receiving antimicrobials for targeted use.