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Obstetric brachial plexus injury: risk factors related to recovery
1Department of Obstetrics and Gynecology, Academic Medical Centre, University of Amsterdam, The Netherlands. h.wolf@amc.uva.nl
Insights
Predicting poor outcomes after obstetric brachial plexus injury (OBPI) is challenging due to its low incidence. While some risk factors exist, a multivariate model has limited predictive value for non-recovered OBPI.
Area of Science:
- Obstetrics
- Pediatrics
- Neonatal Care
Background:
- Obstetric brachial plexus injury (OBPI) affects newborns, with varying recovery rates.
- Identifying infants at risk for incomplete recovery is crucial for timely intervention.
Purpose of the Study:
- To determine if multivariate risk calculation can identify infants unlikely to recover from OBPI.
- To assess the effectiveness of predictive models for non-recovered OBPI.
Main Methods:
- Analysis of liveborn infants (gestational age >= 30 weeks) from 1988-1996.
- Univariate and multivariate logistic analyses were used to identify risk factors for OBPI and non-recovered OBPI.
- Singleton infants delivered vaginally in cephalic presentation were specifically analyzed for multivariate modeling.
Main Results:
- The incidence of OBPI was 0.46% (62/13,366), with 27% (17/62) experiencing incomplete recovery.
- Key risk factors for non-recovered OBPI included high birth weight, female sex, prolonged second stage of labor, diabetes, multiparity, advanced maternal age, and non-Caucasian origin.
- A predictive model excluding birth weight showed reduced effectiveness.
Conclusions:
- A predictive multivariate model has limited value for identifying non-recovered OBPI due to the condition's low incidence.
- The model may still aid in identifying individual cases with exceptionally high risk.
Objective:
To investigate if multivariate risk calculation can discriminate those infants who do not recover after an obstetric brachial plexus injury (OBPI).
Study Design:
All liveborn infants without lethal congenital abnormalities from 1988 through 1996 with a gestational age > or =30 weeks were included. Outcome variables were all OBPI and non-recovered OBPI. Risk calculation was performed by univariate analysis for all infants and by multivariate logistic analysis for all singleton infants delivered vaginally in cephalic presentation.
Results:
A total of 62 of 13 366 liveborn infants sustained an OBPI (0.46%). Seventeen (27%) did not recover completely. Birth weight, female sex, second stage >60 min, diabetes, multiparity, maternal age and non-Caucasian origin were important risk factors for non-recovered OBPI. A model without birth weight, which can not be measured accurately antepartum, is considerably less effective. Risk factors for all OBPI and for non-recovered OBPI were similar.
Conclusion:
A predictive multivariate model is of limited value due to the low incidence of non-recovered OBPI. However, it may be useful to discriminate individual cases with exceptional risk.