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294907

Rapid detection of carbapenemases producing <i>Enterobacteriaceae</i> (CPE) by Chromatic<sup>TM</sup> CPE media in intensive care units in Ain Shams University Hospitals

Article

Last updated: 25 Dec 2024

Subjects

-

Tags

Clinical microbiology

Abstract

Background: The evolution and springing up of carbapenemase-producingEnterobacteriaceae (CPE) threatens worldwide health. The capability of carbapenemases to degrade all β-lactam antibiotics leads to less antibiotics retaining activity against infections caused by CPE that are associated with high mortality and bad prognosis. There is an urgent need to define robust standardized screening methods for the effective detection of CPE in order to control their spread. This study aimed to detect the efficiency of Chromatic TM CPE medium in identifying CRE directly from ICU clinical samples. Methods: A Cross section study was conducted at intensive care units and Medical Microbiology and Immunology laboratory, Faculty of medicine, Ain Shams university. The sample was directly inoculated on CRE chromagar plate and incubated at 35°C aerobically. Isolation and identification of CPE was performed according to Manual of Clinical Microbiology 2019 then antimicrobial susceptibility test by Kirby-Baur disc diffusion. The sensitivity and specificity of CRE screening by CRE chromogenic media were detected using Modified carbapenemase inactivation method (mCIM) as the standard method. Results: One hundred and fifty-eight isolates were obtained from hospitalized ICU patients in Ain shams university hospital between April to November 2022. There were different types of samples, the most common one was sputum. Among 71 isolates grew on blood and MacConkey agar media, 59 (83.15%) showed growth on chromogenic media while 12 (16.9%) showed no growth on chromogenic media. Fifty-four (76.1%) showed MDR Enterobacteriaceae, Pseudomonas aeruginosa and Acinetobacter baumannii. Among 54 MDR isolates, 50 (92.6%) were positive carbapenemase production, while 4 (7.4%) were negative carbapenemase production using mCIM test as confirmatory test. The sensitivity of chromogenic media was 98%, specificity was 50% in all isolates and the accuracy of the test was 94.4%. While the sensitivity of chromogenic media in all Enterobacteriaceae was 96.9%, specificity was 33.3%. Conclusion: This study revealed that CRE chromogenic is highly sensitive in the screening of CRE detection. It efficiently saves more time in identifying CRE as compared to mCIM method. The use of a single chromogenic medium can reduce the cost of sample processing and be an effective tool for rapid detection of CRE. Accurate and fast detection of patients colonized by CPEs is clinically important in applying proper infection control precautions.

DOI

10.21608/mid.2023.202163.1493

Keywords

cPE, Chromatic media, ICU

Authors

First Name

Amira

Last Name

Elshenawy

MiddleName

G.

Affiliation

Medical Microbiology and Immunology Department, Faculty of medicine, 6 October Univeristy, Cairo, Egypt

Email

-

City

-

Orcid

-

First Name

Shereen

Last Name

El-Bendary

MiddleName

-

Affiliation

Medical Microbiology and Immunology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt

Email

-

City

-

Orcid

-

First Name

Yasmeen

Last Name

Mahmood

MiddleName

M

Affiliation

Clinical pathology department , Faculty of Medicine, Ain Shams University, Cairo, Egypt

Email

-

City

-

Orcid

-

First Name

Fatma

Last Name

Mahmoud

MiddleName

M

Affiliation

Medical Microbiology and Immunology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt

Email

mysweetyomar@yahoo.com

City

cairo

Orcid

0000-0002-3774-5917

Volume

4

Article Issue

2

Related Issue

40831

Issue Date

2023-05-01

Receive Date

2023-03-25

Publish Date

2023-05-01

Page Start

522

Page End

529

Print ISSN

2682-4132

Online ISSN

2682-4140

Link

https://mid.journals.ekb.eg/article_294907.html

Detail API

https://mid.journals.ekb.eg/service?article_code=294907

Order

22

Type

Original Article

Type Code

1,157

Publication Type

Journal

Publication Title

Microbes and Infectious Diseases

Publication Link

https://mid.journals.ekb.eg/

MainTitle

Rapid detection of carbapenemases producing <i>Enterobacteriaceae</i> (CPE) by Chromatic<sup>TM</sup> CPE media in intensive care units in Ain Shams University Hospitals

Details

Type

Article

Created At

25 Dec 2024