Effect of improvement in antibiotic use strategy on the short-term clinical outcome of preterm infants with a gestational age of &lt;35 weeks

CHU Mei-Yan; WANG Ming-Jie; LIN Jin; YANG Ge; DING Ying; LIAO Zheng-Chang; CAO Chuan-Ding; YUE Shao-Jie

doi:10.7499/j.issn.1008-8830.2201016

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Chinese Journal of Contemporary Pediatrics ›› 2022, Vol. 24 ›› Issue (5) : 521-529. DOI: 10.7499/j.issn.1008-8830.2201016

CLINICAL RESEARCH

Effect of improvement in antibiotic use strategy on the short-term clinical outcome of preterm infants with a gestational age of <35 weeks

CHU Mei-Yan, WANG Ming-Jie, LIN Jin, YANG Ge, DING Ying, LIAO Zheng-Chang, CAO Chuan-Ding, YUE Shao-Jie

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Abstract

Objective To study the effect of improvement in antibiotic use strategy on the short-term clinical outcome of preterm infants with a gestational age of <35 weeks. Methods The medical data were retrospectively collected from 865 preterm infants with a gestational age of <35 weeks who were admitted to the Neonatal Intensive Care Unit of Xiangya Hospital of Central South University from January 1, 2014 to December 31, 2016. The improved antibiotic use strategy was implemented since January 1, 2015. According to the time of implementation, the infants were divided into three groups: pre-adjustment (January 1, 2014 to December 31, 2014; n=303), post-adjustment Ⅰ (January 1, 2015 to December 31, 2015; n=293), and post-adjustment Ⅱ (January 1, 2016 to December 31, 2016; n=269). The medical data of the three groups were compared. Results There were no significant differences among the three groups in gestational age, proportion of small-for-gestational-age infants, sex, and method of birth (P>0.05). Compared with the pre-adjustment group, the post-adjustment I and post-adjustment Ⅱ groups had a significant reduction in the rate of use of antibiotics and the duration of antibiotic use in the early postnatal period and during hospitalization (P<0.05), with a significant increase in the proportion of infants with a duration of antibiotic use of ≤3 days or 4-7 days and a significant reduction in the proportion of infants with a duration of antibiotic use of >7 days in the early postnatal period (P<0.05). Compared with the post-adjustment Ⅰ group, the post-adjustment Ⅱ group had a significant reduction in the duration of antibiotic use in the early postnatal period and during hospitalization (P<0.05), with a significant increase in the proportion of infants with a duration of antibiotic use of ≤3 days and a significant reduction in the proportion of infants with a duration of antibiotic use of 4-7 days or >7 days (P<0.05). Compared with the pre-adjustment group, the post-adjustment I and post-adjustment Ⅱ groups had significantly shorter duration of parenteral nutrition and length of hospital stay (P<0.05). There were gradual reductions in the incidence rates of grade ≥Ⅲ intraventricular hemorrhage (IVH) and late-onset sepsis (LOS) after the adjustment of antibiotic use strategy. The multivariate logistic regression analysis showed that the adjustment of antibiotic use strategy had no effect on short-term adverse clinical outcomes, and antibiotic use for >7 days significantly increased the risk of adverse clinical outcomes (P<0.05). Conclusions It is feasible to reduce unnecessary antibiotic use by the improvement in antibiotic use strategy in preterm infants with a gestational age of <35 weeks, which can also shorten the duration of parenteral nutrition and the length of hospital stay and reduce the incidence rates of grade ≥Ⅲ IVH and LOS. Citation:Chinese Journal of Contemporary Pediatrics, 2022, 24(5): 521-529

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Late-onset sepsis / Antibiotics / Preterm infant

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CHU Mei-Yan, WANG Ming-Jie, LIN Jin, YANG Ge, DING Ying, LIAO Zheng-Chang, CAO Chuan-Ding, YUE Shao-Jie. Effect of improvement in antibiotic use strategy on the short-term clinical outcome of preterm infants with a gestational age of <35 weeks[J]. Chinese Journal of Contemporary Pediatrics. 2022, 24(5): 521-529 https://doi.org/10.7499/j.issn.1008-8830.2201016

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