Reduction strategies for inpatient oral third-generation cephalosporins at a cancer center: An interrupted time-series analysis.

Oral third-generation cephalosporins (3GCs) are not recommended for use owing to their low bioavailability and the risk of emergence of resistant microorganisms with overuse. A standardized and effective method for reducing their use is lacking. Here, in a 60-month, single-institution, interrupted t...

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Main Authors: Naoya Itoh, Takanori Kawabata, Nana Akazawa, Daichi Kawamura, Hiromi Murakami, Yuichi Ishibana, Eiichi N Kodama, Norio Ohmagari
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2023-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0281518
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author Naoya Itoh
Takanori Kawabata
Nana Akazawa
Daichi Kawamura
Hiromi Murakami
Yuichi Ishibana
Eiichi N Kodama
Norio Ohmagari
author_facet Naoya Itoh
Takanori Kawabata
Nana Akazawa
Daichi Kawamura
Hiromi Murakami
Yuichi Ishibana
Eiichi N Kodama
Norio Ohmagari
author_sort Naoya Itoh
collection DOAJ
description Oral third-generation cephalosporins (3GCs) are not recommended for use owing to their low bioavailability and the risk of emergence of resistant microorganisms with overuse. A standardized and effective method for reducing their use is lacking. Here, in a 60-month, single-institution, interrupted time-series analysis, which was retrospectively conducted between April 1, 2017, and March 31, 2022, we evaluated the effectiveness of a four-phase intervention to reduce the use of 3GCs in patients at a cancer center: Phase 1 (pre-intervention), Phase 2 (review of clinical pathways), Phase 3 (establishment of infectious disease consultation service and implementation of antimicrobial stewardship program), and Phase 4 (educational lecture and pop-up displays for oral antimicrobials at the time of ordering). Although no significant changes were observed in Phases 3 and 4, the first intervention resulted in a significant decrease in the trend and level of days of therapy (DOT) for 3GCs. The level for cephalexin DOT and the trend for sulfamethoxazole-trimethoprim DOT increased in Phase 4, and the trend for amoxicillin and amoxicillin-clavulanate DOT increased in Phase 3. Macrolide DOT showed a decreasing trend in Phases 2 and 4 and decreasing and increased levels in Phases 3 and 4, respectively; no change was observed for quinolones. Actual and adjusted purchase costs of 3GCs decreased significantly during all study periods, while those for oral antimicrobials decreased in Phase 2, and actual purchase costs increased in Phases 3 and 4. No significant reduction in resistant organisms, length of hospital stay, or mortality was observed. This is the first study on the effects of oral 3GC reduction strategies in patients with cancer. We conclude that even facilities that substantially use antimicrobials can efficiently reduce the use of 3GCs.
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spelling doaj.art-12e6e5ce1f5449b8a3bdf12b2f85a2402023-02-15T05:31:05ZengPublic Library of Science (PLoS)PLoS ONE1932-62032023-01-01182e028151810.1371/journal.pone.0281518Reduction strategies for inpatient oral third-generation cephalosporins at a cancer center: An interrupted time-series analysis.Naoya ItohTakanori KawabataNana AkazawaDaichi KawamuraHiromi MurakamiYuichi IshibanaEiichi N KodamaNorio OhmagariOral third-generation cephalosporins (3GCs) are not recommended for use owing to their low bioavailability and the risk of emergence of resistant microorganisms with overuse. A standardized and effective method for reducing their use is lacking. Here, in a 60-month, single-institution, interrupted time-series analysis, which was retrospectively conducted between April 1, 2017, and March 31, 2022, we evaluated the effectiveness of a four-phase intervention to reduce the use of 3GCs in patients at a cancer center: Phase 1 (pre-intervention), Phase 2 (review of clinical pathways), Phase 3 (establishment of infectious disease consultation service and implementation of antimicrobial stewardship program), and Phase 4 (educational lecture and pop-up displays for oral antimicrobials at the time of ordering). Although no significant changes were observed in Phases 3 and 4, the first intervention resulted in a significant decrease in the trend and level of days of therapy (DOT) for 3GCs. The level for cephalexin DOT and the trend for sulfamethoxazole-trimethoprim DOT increased in Phase 4, and the trend for amoxicillin and amoxicillin-clavulanate DOT increased in Phase 3. Macrolide DOT showed a decreasing trend in Phases 2 and 4 and decreasing and increased levels in Phases 3 and 4, respectively; no change was observed for quinolones. Actual and adjusted purchase costs of 3GCs decreased significantly during all study periods, while those for oral antimicrobials decreased in Phase 2, and actual purchase costs increased in Phases 3 and 4. No significant reduction in resistant organisms, length of hospital stay, or mortality was observed. This is the first study on the effects of oral 3GC reduction strategies in patients with cancer. We conclude that even facilities that substantially use antimicrobials can efficiently reduce the use of 3GCs.https://doi.org/10.1371/journal.pone.0281518
spellingShingle Naoya Itoh
Takanori Kawabata
Nana Akazawa
Daichi Kawamura
Hiromi Murakami
Yuichi Ishibana
Eiichi N Kodama
Norio Ohmagari
Reduction strategies for inpatient oral third-generation cephalosporins at a cancer center: An interrupted time-series analysis.
PLoS ONE
title Reduction strategies for inpatient oral third-generation cephalosporins at a cancer center: An interrupted time-series analysis.
title_full Reduction strategies for inpatient oral third-generation cephalosporins at a cancer center: An interrupted time-series analysis.
title_fullStr Reduction strategies for inpatient oral third-generation cephalosporins at a cancer center: An interrupted time-series analysis.
title_full_unstemmed Reduction strategies for inpatient oral third-generation cephalosporins at a cancer center: An interrupted time-series analysis.
title_short Reduction strategies for inpatient oral third-generation cephalosporins at a cancer center: An interrupted time-series analysis.
title_sort reduction strategies for inpatient oral third generation cephalosporins at a cancer center an interrupted time series analysis
url https://doi.org/10.1371/journal.pone.0281518
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