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A New Metric of Antibiotic Class Resistance in Gram-Negative Bacilli Isolated from Hospitalized Children

Published online by Cambridge University Press:  02 January 2015

Sameer J. Patel ,
Dana O'Toole  and
Elaine Larson
Sameer J. Patel*
Affiliation:
Department of Pediatrics, Columbia University, New York, New York
Dana O'Toole
Affiliation:
Department of Pediatrics, Columbia University, New York, New York
Elaine Larson
Affiliation:
School of Nursing, Columbia University, New York, New York
*
Department of Pediatrics, Division of Pediatric Infectious Diseases, Columbia University, 622 West 168th Street, PH 4W-475, New York, NY 10032 (sp2172@columbia.edu)
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Abstract

Objective.

The purpose of this study was to describe patterns of infection or colonization with antibiotic-resistant gram-negative bacilli (GNB) in hospitalized children utilizing an electronic health record.

Setting.

Tertiary care facility.

Participants.

Pediatric patients 18 years of age or younger hospitalized from January 1, 2006, to December 31, 2008.

Methods.

Children were identified who had (1) at least 1 positive culture for a multidrug-resistant (MDR) GNB, defined as a GNB with resistance to 3 or more antibiotic classes; or (2) additive drug resistance, defined as isolation of more than 1 GNB that collectively as a group demonstrated resistance to 3 or more antibiotic classes over the study period. Differences in clinical characteristics between the 2 groups were ascertained, including history of admissions and transfers, comorbid conditions, receipt of procedures, and antibiotic exposure.

Results.

Of 56,235 pediatric patients, 46 children were infected or colonized with an MDR GNB, of which 16 were resistant to 3 classes and 30 were resistant to 4 classes. Another 39 patients had positive cultures for GNB that exhibited additive drug resistance. Patients with additive drug resistance were more likely than patients with MDR GNB to have had previous admissions to a long-term facility (8 vs 2; P = .04) and had more mean admissions (7 vs 3; P <.01) and more mean antibiotic-days (P < .01 to P = .02). Six patients with additive drug resistance later had a positive culture with an MDR GNB.

Conclusions.

An electronic health record can be used to track antibiotic class resistance in GNB isolated from hospitalized children over multiple cultures and hospitalizations.

Type
Original Article
Information
Infection Control & Hospital Epidemiology , Volume 33 , Issue 6 , June 2012 , pp. 602 - 607
Copyright
Copyright © The Society for Healthcare Epidemiology of America 2012 

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