Journal
BJOG-AN INTERNATIONAL JOURNAL OF OBSTETRICS AND GYNAECOLOGY
Volume 123, Issue 11, Pages 1797-1803Publisher
WILEY
DOI: 10.1111/1471-0528.13817
Keywords
Cephalohaematoma; fetal scalp electrode; scalp injury
Categories
Funding
- Intramural NIH HHS [Z99 HD999999] Funding Source: Medline
- NCATS NIH HHS [UL1 TR000101, UL1 TR001409] Funding Source: Medline
- NCRR NIH HHS [UL1 RR031975] Funding Source: Medline
- NICHD NIH HHS [HHSN267200603425C] Funding Source: Medline
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ObjectivesTo estimate the incidence and risk of complications associated with a fetal scalp electrode and to determine whether its application in the setting of operative vaginal delivery was associated with increased neonatal morbidity. DesignRetrospective cohort study. SettingTwelve clinical centers with 19 hospitals across nine American Congress of Obstetricians and Gynecologists US districts. PopulationWomen in the USA. MethodsWe evaluated 171698 women with singleton deliveries 23weeks of gestation in a secondary analysis of the Consortium on Safe Labor study between 2002 and 2008, after excluding conditions that precluded fetal scalp electrode application such as prelabour caesarean delivery. Secondary analysis limited to operative vaginal deliveries 34weeks of gestation was also performed. Main outcome measuresIncidences and adjusted odds ratios with 95% confidence intervals of neonatal complications were calculated, controlling for maternal characteristics, delivery mode and pregnancy complications. ResultsFetal scalp electrode was used in 37492 (22%) of deliveries. In non-operative vaginal delivery, fetal scalp electrode was associated with increased risk of injury to scalp due to birth trauma (1.2% versus 0.9%; adjusted odds ratios 1.62; 95% confidence intervals 1.41-1.86) and cephalohaematoma (1.0% versus 0.9%; adjusted odds ratios 1.57; 95% confidence intervals 1.36-1.83). Neonatal complications were not significantly different comparing fetal scalp electrode with vacuum-assisted vaginal delivery and vacuum-assisted vaginal delivery alone or comparing fetal scalp electrode with forceps-assisted vaginal delivery and forceps-assisted vaginal delivery alone. ConclusionsWe found increased neonatal morbidity with fetal scalp electrode though the absolute risk was very low. It is possible that these findings reflect an underlying indication for its use. Our findings support the use of fetal scalp electrodes when clinically indicated. Tweetable abstractNeonatal risks associated with fetal scalp electrode use were low (injury to scalp 1.2% and cephalohaematoma 1.0%). Tweetable abstract Neonatal risks associated with fetal scalp electrode use were low (injury to scalp 1.2% and cephalohaematoma 1.0%).
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