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No relationship between mode of delivery and neonatal mortality and neurodevelopment in very low birth weight infants aged two years
Jia-Jun Zhu, Ying-Ying Bao, Guo-Lian Zhang, Li-Xin Ma, Ming-Yuan Wu
Hangzhou, China
Author Affiliations: Department of Neonatology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou 310006, China (Zhu JJ, Bao YY, Zhang GL, Ma LX, Wu MY)
Corresponding Author: Ming-Yuan Wu, Women's Hospital, Zhejiang University School of Medicine, 1 Xueshi Road, Hangzhou 310003, China (Tel: +86-571-89992350; Email: wumy@zju.edu.cn)
doi: 10.1007/s12519-014-0497-6
Background: To compare neonatal mortality and neurodevelopmental outcomes at two years of age in very low birth weight infants (¡Ü1500 g) born by cesarean with those by vaginal delivery.
Methods: In this retrospective, case-control study, we evaluated neonatal mortality, medical conditions and neurodevelopmental outcomes at two years of corrected age in 710 very low birth weight (VLBW) infants born between January 2005 and December 2010. Of the 710 infants, 351 were born by the cesarean and 359/710 by vaginal route.
Results: There were no significant differences in neonatal mortality between the cesarean delivery group and vaginal delivery group [56/351 (15.9%) vs. 71/359 (19.8%), P=0.20]. VLBW infants delivered by the cesarean procedure had a higher incidence of respiratory distress syndrome than those born by the vaginal route [221/351 (63.0%) vs. 178/359 (49.6%), P<0.001]. There were no differences in other neonatal morbidities, including intraventricular hemorrhage [126/351 (35.9%) vs. 134/359 (37.3%), P=0.69], bronchopulmonary dysplasia [39/351 (11%) vs. 31/359 (8.6%), P=0.38] and necrotising enterocolitis [40/351 (11.4%) vs. 32/359 (8.9%), P=0.32] between the two groups. The incidence of poor neurodevelopment after cesarean delivery was similar to that after vaginal delivery [105/351 (29.9) vs. 104/359 (29.0%), P=0.78].
Conclusions: In neither neurodevelopment nor neonatal mortality did cesarean birth offered significant advantages to VLBW infants. Moreover, the operation might be associated with an increased risk of respiratory distress syndrome for VLBW infants. The mode of delivery of VLBW infants should be largely based on obstetric indications and maternal considerations rather than perceived better outcomes for the neonate.
World J Pediatr 2014;10(3):227-231
Key words: cesarean delivery;
neonatal mortality;
neurodevelopment outcomes;
vaginal delivery;
very low birth weight
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