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Risk factors for neonatal hyperbilirubinemia: a systematic review and meta-analysis
Qun Lin1, Daomou Zhu2, Caihua Chen3
1Neonatal Department, Haikou Maternal and Child Health Hospital, Haikou, China.
Insights
Exclusive breastfeeding, G6PD deficiency, ABO incompatibility, and preterm birth are key risk factors for neonatal hyperbilirubinemia. Early identification and intervention are crucial for preventing severe complications in newborns.
Area of Science:
- Neonatal Medicine
- Pediatrics
- Public Health
Background:
- Neonatal hyperbilirubinemia is a common cause of hospitalization with potential for severe, lifelong complications.
- Identifying risk factors for neonatal hyperbilirubinemia is crucial but has been controversial.
- This meta-analysis aimed to clarify the established risk factors for neonatal hyperbilirubinemia.
Purpose of the Study:
- To systematically evaluate and synthesize evidence on risk factors for neonatal hyperbilirubinemia.
- To provide a quantitative assessment of the association between identified factors and the condition.
- To inform clinical practice and public health strategies for managing neonatal jaundice.
Main Methods:
- A comprehensive meta-analysis of relevant English and Chinese studies was conducted.
- Studies included newborns with control groups, examining exposure factors and hyperbilirubinemia.
- Odds ratios (OR) with 95% confidence intervals (CI) were calculated, and heterogeneity was assessed using Chi-square tests and subgroup analyses.
Main Results:
- Exclusive breastfeeding (OR=1.74), G6PD deficiency (OR=1.62), ABO incompatibility (OR=1.64), and preterm birth (OR=1.31) were confirmed as significant risk factors.
- No significant heterogeneity or publication bias was detected for the identified risk factors.
- All identified risk factors showed statistically significant associations with neonatal hyperbilirubinemia.
Conclusions:
- Exclusive breastfeeding, G6PD deficiency, ABO incompatibility, and preterm birth are confirmed risk factors for neonatal hyperbilirubinemia.
- Close monitoring and timely clinical intervention are recommended for pregnant women with these risk factors.
- This study provides robust evidence to guide preventative and therapeutic strategies for neonatal jaundice.
Background:
Hyperbilirubinemia is the most common cause of neonatal hospitalization and, although it generally has a good prognosis, a significant percentage of neonatal patients maintain a high bilirubin level, which can lead to severe complications, including lifelong disability such as growth retardation, encephalopathy, autism and hearing impairment. The study of risk factors for neonatal hyperbilirubinemia has been controversial. Therefore, we evaluated the risk factors of neonatal hyperbilirubinemia using a meta-analysis.
Methods:
Relevant English and Chinese studies that discussed risk factors for neonatal hyperbilirubinemia were retrieved from the PubMed, EMBASE, Medline, Central, China National Knowledge Infrastructure (CNKI), Wanfang and China Science Digital Library (CSDL). The literature took newborns as the research object, set up a control group, and observed the relationship between exposure factors and neonatal hyperbilirubinemia. The combined effect size was expressed by odds ratio (OR) and 95% confidence interval (CI). The Chi-square test was used to test heterogeneity of the studies, and if it existed, subgroup analyses were used to explore the source of heterogeneity, and the random-effects model was selected for the combined analysis. The fixed-effects model was chosen for the combined analysis if there was no heterogeneity. Publication bias was assessed using Egger's test and funnel plot.
Results:
Risk factors for neonatal hyperbilirubinemia were exclusive breastfeeding (BF: OR =1.74, 95% CI: 1.42, 2.12, Z=5.43, P<0.00001); glucose-6-phosphate dehydrogenase deficiency (G6PD: OR =1.62, 95% CI: 1.44, 1.81, Z=8.39, P<0.00001); maternal-fetal ABO blood group incompatibility (OR =1.64, 95% CI: 1.42, 1.89, Z=6.75, P<0.00001); and preterm birth (PTB: OR =1.31, 95% CI: 1.17, 1.47, Z=4.60, P<0.00001); there was no heterogeneity or publication bias among the studies (BF: χ2=5.34, P=0.25, I2=25%; G6PD: χ2=4.40, P=0.49, I2=0%; ABO: χ2=1.91, P=0.75, I2=0%; PTB: χ2=0.81, P=0.67, I2=0%).
Conclusions:
Exclusive breastfeeding, G6PD deficiency, ABO incompatibility and premature birth were confirmed as risk factors for neonatal hyperbilirubinemia. Pregnant women with risk factors should be monitored more closely and clinical intervention should be given in a timely manner.
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