TY - JOUR
T1 - The effects of group 1 versus group 2 carbapenems on imipenem-resistant Pseudomonas aeruginosa
T2 - An ecological study
AU - Carmeli, Yehuda
AU - Lidji, Shiri Klarfeld
AU - Shabtai, Esther
AU - Navon-Venezia, Shiri
AU - Schwaber, Mitchell J.
N1 - Funding Information:
Disclosure: This study was supported by an educational grant provided by Merck & Co. Inc.
PY - 2011/7
Y1 - 2011/7
N2 - Use of the group 2 carbapenems, imipenem and meropenem, may lead to emergence of Pseudomonas aeruginosa resistance. The group 1 carbapenem ertapenem has limited activity against P. aeruginosa and is not associated with imipenem-resistant P. aeruginosa (IMP-R PA) in vitro. This retrospective, group-level, longitudinal study collected patient, antibiotic use, and resistance data from 2001 to 2005 using a hospital database containing information on 9 medical wards. A longitudinal data time series analysis was done to evaluate the association between carbapenem use (defined daily doses, or DDDs) and IMP-R PA. A total of 139 185 patient admissions were included, with 541 150 antibiotics DDDs prescribed: 4637 DDDs of group 2 carbapenems and 2130 DDDs of ertapenem. A total of 779 IMP-R PA were isolated (5.6 cases/1000 admissions). Univariate analysis found a higher incidence of IMP-R PA with group 2 carbapenems (P < 0.001), aminoglycosides (P = 0.034), and penicillins (P = 0.05), but not with ertapenem. Multivariate analysis showed a yearly increase in incidence of IMP-R-PA (3.8%, P < 0.001). Group 2 carbapenem use was highly associated with IMP-R PA, with a 20% increase in incidence (P = 0.0014) for each 100 DDDs. Group 2 carbapenem use tended to be associated with an increased proportion of IMP-R PA (P = 0.0625) in multivariate analysis. Ertapenem was not associated with IMP-R PA. These data would support preferentially prescribing ertapenem rather than group 2 carbapenems where clinically appropriate.
AB - Use of the group 2 carbapenems, imipenem and meropenem, may lead to emergence of Pseudomonas aeruginosa resistance. The group 1 carbapenem ertapenem has limited activity against P. aeruginosa and is not associated with imipenem-resistant P. aeruginosa (IMP-R PA) in vitro. This retrospective, group-level, longitudinal study collected patient, antibiotic use, and resistance data from 2001 to 2005 using a hospital database containing information on 9 medical wards. A longitudinal data time series analysis was done to evaluate the association between carbapenem use (defined daily doses, or DDDs) and IMP-R PA. A total of 139 185 patient admissions were included, with 541 150 antibiotics DDDs prescribed: 4637 DDDs of group 2 carbapenems and 2130 DDDs of ertapenem. A total of 779 IMP-R PA were isolated (5.6 cases/1000 admissions). Univariate analysis found a higher incidence of IMP-R PA with group 2 carbapenems (P < 0.001), aminoglycosides (P = 0.034), and penicillins (P = 0.05), but not with ertapenem. Multivariate analysis showed a yearly increase in incidence of IMP-R-PA (3.8%, P < 0.001). Group 2 carbapenem use was highly associated with IMP-R PA, with a 20% increase in incidence (P = 0.0014) for each 100 DDDs. Group 2 carbapenem use tended to be associated with an increased proportion of IMP-R PA (P = 0.0625) in multivariate analysis. Ertapenem was not associated with IMP-R PA. These data would support preferentially prescribing ertapenem rather than group 2 carbapenems where clinically appropriate.
KW - Antibiotic resistance
KW - Carbapenem
KW - Ertapenem
KW - Imipenem
KW - Pseudomonas aeruginosa
UR - http://www.scopus.com/inward/record.url?scp=79959247071&partnerID=8YFLogxK
U2 - 10.1016/j.diagmicrobio.2011.03.009
DO - 10.1016/j.diagmicrobio.2011.03.009
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
C2 - 21683268
AN - SCOPUS:79959247071
SN - 0732-8893
VL - 70
SP - 367
EP - 372
JO - Diagnostic Microbiology and Infectious Disease
JF - Diagnostic Microbiology and Infectious Disease
IS - 3
ER -