Preterm birth by vacuum extraction and neonatal outcome: a population-based cohort study

BMC Pregnancy and Childbirth

Cecilia Ekéus²  Mikael Norman³  Katarina Åberg¹ 

[1] Department of Women’s and Children’s Health, Division of Reproductive Health, Karolinska Institutet, Retzius väg 13, 171 77 Stockholm, Sweden;Department of Women’s and Children’s Health, Division of Reproductive Health, Karolinska Institutet, Stockholm, Sweden;Department of Clinical Science, Intervention and Technology, Division of Pediatrics, Karolinska Institutet, Stockholm, Sweden

关键词: Brachial plexus injury;    Extracranial hemorrhage;    Intracranial hemorrhage;    Preterm delivery;    Mode of delivery;   

Others  :  1131678
DOI  :  10.1186/1471-2393-14-42

 received in 2013-10-31, accepted in 2014-01-20,  发布年份 2014

【 摘 要 】

Background

Very few studies have investigated the neonatal outcomes after vacuum extraction delivery (VE) in the preterm period and the results of these studies are inconclusive. The objective of this study was to describe the use of VE for preterm delivery in Sweden and to compare rates of neonatal complications after preterm delivery by VE to those found after cesarean section during labor (CS) or unassisted vaginal delivery (VD).

Methods

Data was obtained from Swedish national registers. In a population-based cohort from 1999 to 2010, all live-born, singleton preterm infants in a non-breech presentation at birth, born after onset of labor (either spontaneously, by induction, or by rupture of membranes) by VD, CS, or VE were included, leaving a study population of 40,764 infants. Logistic regression analyses were used to calculate adjusted odds ratios (AOR), using unassisted vaginal delivery as reference group.

Results

VE was used in 5.7% of the preterm deliveries, with lower rates in earlier gestations. Overall, intracranial hemorrhage (ICH) occurred in 1.51%, extracranial hemorrhage (ECH) in 0.64%, and brachial plexus injury in 0.13% of infants. Infants delivered by VE had higher risks for ICH (AOR = 1.84 (95% CI: 1.09-3.12)), ECH (AOR = 4.48 (95% CI: 2.84-7.07)) and brachial plexus injury (AOR = 6.21 (95% CI: 2.22-17.4)), while infants delivered by CS during labor had no increased risk for these complications, as compared to VD.

Conclusion

While rates of neonatal complications after VE are generally low, higher odds ratios for intra- and extracranial hemorrhages and brachial plexus injuries after VE, compared with other modes of delivery, support a continued cautious use of VE for preterm delivery.

【 授权许可】

   
2014 Åberg et al.; licensee BioMed Central Ltd.

【 图 表 】

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