AI Article Synopsis
- Extended-spectrum beta-lactamase-producing (ESBL-E) infections significantly impact patients with hematologic cancers, particularly those with prior colonization by resistant bacteria, leading to optimized treatments using carbapenems.
- A study comparing empirical carbapenem therapy to non-carbapenem therapy in hospitalized adult hematology patients showed that 36% had positive ESBL-E colonization, yet the rate of future infections did not significantly differ between colonized and non-colonized patients.
- Despite the presence of ESBL-E, there were no significant mortality rates associated with these infections, indicating that factors beyond colonization status may influence patient outcomes.
Article Abstract
Background: Extended-spectrum beta-lactamase-producing (ESBL-E) infections are a major source of mortality and morbidity in patients with hematologic cancers. One of the most significant risk factors for bacterial illness is prior colonization with resistant germs. Empiric usage of carbapenems is recommended for the treatment of infections in patients with a positive colonization history.
Objectives: We aimed to determine the outcome of empirical carbapenem (de-escalation) versus non-carbapenem (escalation) therapy in adult hematology patients who have rectal extended-spectrum beta-lactamase positive ESBL-E colonization.
Methods: Two hundred three rectal swab cultures were collected from 130 patients, admission or during hospitalization between June 2014 and May 2015. Patients were followed till January 2016 for future infections due to ESBL-E. Empirical antibiotic treatment was started according to the patient's medical condition without consideration of previous colonization status. Stable patients received empirical escalation therapy. All-cause and early mortality of infections are analyzed.
Results: Seventy-three (36%) swabs were positive for ESBL-E. Patients with rectal ESBL-E colonization were defined as cases; patients without colonization were defined as controls. Prospective infection due to ESBL-E in the case and control group was 6.8% and 2.3%, respectively. No statistically significant relation was found between colonization and prospective infection due to ESBL-E (p=0.110). There was no all-cause or early mortality in prospective infections with ESBL-E. Among case patients, one patient each died from all-cause mortality in the escalation (n=55) and de-escalation (n=3) group. The all-cause mortality in the antibiotic switch group (n=30) was eight, including five patients in the early mortality group although the bacteriologic agents were susceptible to the given antibiotics.
Conclusion: In our institution, rectal colonization with ESBL-E was high, but contracting an infection due to ESBL-E was surprisingly low. Colonization with ESBL-E may not necessarily end with an infection in some situations. In stable patients, disregarding colonization features before empirical therapy did not seem to be inappropriate.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11289854 | PMC |
| http://dx.doi.org/10.7759/cureus.63570 | DOI Listing |
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