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. 2020 Aug;55(8):2150-2155.
doi: 10.1002/ppul.24884. Epub 2020 Jun 11.

Impact of respiratory viral polymerase chain reaction testing on de-escalation of antibiotic therapy in children who require chronic positive pressure ventilation

Guillermo Beltran Ale  1 , Dan Benscoter  1   2 , Md Monir Hossain  3   2 , Yin Zhang  3 , Joshua Courter  4 , Joanna Thomson  5   2
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Impact of respiratory viral polymerase chain reaction testing on de-escalation of antibiotic therapy in children who require chronic positive pressure ventilation

Guillermo Beltran Ale et al. Pediatr Pulmonol. 2020 Aug.

Abstract

Background: Children who require chronic positive pressure ventilation (CPPV) are frequently hospitalized with acute respiratory infections. Although respiratory viral testing is often performed, it is unclear how positive results impact antibiotic use. We sought to assess the impact of respiratory viral testing on antibiotic use in hospitalized children on CPPV.

Methods: This retrospective cohort study included hospitalized children on CPPV who had respiratory viral polymerase chain reaction (RVP) testing on admission. Primary exposure was a positive RVP result; primary outcome was antibiotic de-escalation, defined as discontinuation of antibiotics or narrowing of antimicrobial spectra. To determine the independent association of positive RVP and antibiotic de-escalation, a generalized linear mixed effect model was used to account for within patient clustering and confounders defined a priori (blood and respiratory cultures, leukocytosis, bandemia, chest radiograph findings, aspiration risk, and recent admission).

Results: A total of 200 admissions representing 118 patients were included. A viral pathogen was identified in 46.5% (93/200) of admissions; rhinovirus was most frequently identified (61.5% of positive RVPs). Antibiotic de-escalation occurred in 33% of admissions (35.5% of RVP-positive admissions vs 30.8% of RVP-negative admissions; P = .49). In adjusted analysis, there was no association between positive RVP and antibiotics de-escalation (adjusted OR: 0.86; 95% confidence interval: 0.32-2.26).

Conclusion: This single center cohort study suggests that respiratory viral testing may not impact antibiotic prescribing for hospitalized children on CPPV. There is need for improved stewardship of both diagnostic testing and antimicrobial use in this population.

Keywords: antibiotics; children; mechanical ventilation; polymerase chain reaction; viral.

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