Diagnostic Utility of Cerebrospinal Fluid White Blood Cell Components for the Identification of Bacterial Meningitis in Infants.

Diagnostic Utility of Cerebrospinal Fluid White Blood Cell Components for the Identification of Bacterial Meningitis in Infants.
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脑脊液白细胞成分在婴儿细菌性脑膜炎鉴定中的诊断效用。

DOI:
10.1093/jpids/piad087
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发表时间:
2023
影响因子:
3.2
通讯作者:
Kumar,KaranR
Kumar,KaranR
中科院分区:
医学3区
文献类型:
--
作者:
Lamb,AshleyE;Rent,Sharla;Brannon,AsiaJ;Greer,JonathanL;Ndey-Bongo,NyssaP;Cho,StephenH;Greenberg,RachelG;BenjaminJr,DanielK;Clark,ReeseH;Kumar,KaranR

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背景为了评估脑脊液 (CSF) 白细胞 (WBC) 成分在诊断新生儿重症监护病房 (NICU) 婴儿细菌性脑膜炎中的诊断和预测效用。方法我们确定了一组 1997 年至 2020 年间从儿科 NICU 出院的婴儿,这些婴儿没有免疫缺陷,在出生后 120 天内至少收集了 1 份脑脊液培养物,并且至少有 1 份脑脊液培养物。脑脊液实验室标本在培养物采集当天获得。我们只纳入了婴儿的第一次脑脊液培养物,并排除了来自脑脊液储存库和那些正在生长的污染物或非细菌生物体的培养物。我们通过计算每个参数不同截止值的敏感性、特异性、阳性和阴性预测值、似然比以及受试者工作曲线下面积 (AUC),检查了脑脊液白细胞成分在诊断或预测细菌性脑膜炎中的效用。我们进行了亚组分析,排除了在收集脑脊液培养物前一天接受抗生素治疗的婴儿。结果在符合研究纳入标准的 20 756 名婴儿中,320 名(2%)被诊断患有细菌性脑膜炎。我们发现(AUC [95% CI])脑脊液白细胞计数(0.76 [0.73–0.79])、脑脊液中性粒细胞计数(0.74 [0.70–0.78])和脑脊液中性粒细胞百分比(0.71 [0.67–0.75])对细菌性脑膜炎具有最高的预测值,即使排除早期服用抗生素的婴儿也是如此。预测培养证实的细菌性脑膜炎的最佳判别力,临床医生在解释疑似脑膜炎婴儿的脑脊液白细胞参数时应谨慎。
BackgroundTo evaluate the diagnostic and predictive utility of cerebrospinal fluid (CSF) white blood cell (WBC) components in the diagnosis of bacterial meningitis in infants discharged from the neonatal intensive care unit (NICU).MethodsWe identified a cohort of infants discharged from a Pediatrix NICU between 1997 and 2020 who did not have an immunodeficiency, had at least 1 CSF culture collected within the first 120 days of life, and at least 1 CSF laboratory specimen obtained on the day of culture collection. We only included an infant’s first CSF culture and excluded cultures from CSF reservoirs and those growing contaminants or nonbacterial organisms. We examined the utility of CSF WBC components to diagnose or predict bacterial meningitis by calculating sensitivity, specificity, positive and negative predictive values, likelihood ratios, and area under the receiver operating curve (AUC) at different cutoff values for each parameter. We performed subgroup analysis excluding infants treated with antibiotics the day before CSF culture collection.ResultsOf the 20 756 infants that met the study inclusion criteria, 320 (2%) were diagnosed with bacterial meningitis. We found (AUC [95% CI]) CSF WBC count (0.76 [0.73–0.79]), CSF neutrophil count (0.74 [0.70–0.78]), and CSF neutrophil percent (0.71 [0.67–0.75]) had the highest predictive values for bacterial meningitis, even when excluding infants with early antibiotic administration.ConclusionsNo single clinical prediction rule had the optimal discriminatory power for predicting culture-proven bacterial meningitis, and clinicians should be cautious when interpreting CSF WBC parameters in infants with suspected meningitis.
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