Management of shoulder dystocia: trends in incidence and maternal and neonatal morbidity.

OBJECTIVE: To investigate trends in the incidence of shoulder dystocia, methods used to overcome the obstruction, and rates of maternal and neonatal morbidity. METHODS: Cases of shoulder dystocia and of neonatal brachial plexus injury occurring from 1991 to 2005 in our unit were identified. The obstetric notes of cases were examined, and the management of the shoulder dystocia was recorded. Demographic data, labor management with outcome, and neonatal outcome were also recorded for all vaginal deliveries over the same period. Incidence rates of shoulder dystocia and associated morbidity related to the methods used for overcoming the obstruction to labor were determined. RESULTS: There were 514 cases of shoulder dystocia among 79,781 (0.6%) vaginal deliveries with 44 cases of neonatal brachial plexus injury and 36 asphyxiated neonates; two neonates with cerebral palsy died. The McRoberts' maneuver was used increasingly to overcome the obstruction, from 3% during the first 5 years to 91% during the last 5 years. The incidence of shoulder dystocia, brachial plexus injury, and neonatal asphyxia all increased over the study period without change in maternal morbidity frequency. CONCLUSION: The explanation for the increase in shoulder dystocia is unclear but the introduction of the McRoberts' maneuver has not improved outcomes compared with the earlier results. LEVEL OF EVIDENCE: II.

Variations in the orthotic management of cerebral palsy.

OBJECTIVE: Anecdotal reports that children with cerebral palsy were provided different orthoses in two adjacent UK health districts were investigated using an observational comparative case study. METHOD: The populations were compared using an epidemiological register of children with cerebral palsy, which confirmed that a comparable health service response could be expected. Merging data from the register with the orthotic patient database facilitated comparison of the orthoses prescribed in each district. A survey questionnaire was used to gather the perceptions of clinicians in both districts to understand how each team decides which orthosis to prescribe. RESULTS: There was considerable variation in the types of orthoses prescribed between districts, and particularly of ankle foot orthoses. Survey respondents from the same profession described having the same roles, although clinicians expressed different responsibilities for initiating and sanctioning orthotic prescriptions in their district programmes. The survey also suggested that most clinicians were uncertain when prescribing orthoses, and clinical practice was therefore largely determined by professional preference. CONCLUSION: Defining the spectrum of activity limitation in geographically defined populations would enhance health services research and assist in the development of trials using different interventions to reduce those limitations.

Cerebral palsy rates among low-birthweight infants fell in the 1990s.

Using a population-based register, this study sought to ascertain changes in the rate and severity of cerebral palsy (CP) in a geographically defined area of the UK among infants weighing less than 1500 g and born between 1984 and 1995. There were 417414 live births in the area, which included Berkshire, Buckinghamshire, Northamptonshire, and Oxfordshire. Of the 898 children with CP (526 males, 372 females), 194 (21.6%) weighed less than 1500 g at birth. The overall CP rate for neonatal survivors fell from 2.5 out of every 1000 in 1984 to 1986 to 1.7 in 1993 to 1995. The rate for those weighing less than 1000 g rose to 90 out of every 1000 neonatal survivors in 1987 to 1989 and then fell to 57 in 1993 to 1995. A similar pattern is seen among infants weighing 1000 to 1499 g at birth, the rate rising to 77 in 1987 to 1988 and then falling to 40 in 1993 to 1995. The rate of severe motor disability among infants weighing less than 1500 g also decreased (24.6 in 1984-1986 to 12.5 in 1993-1995). The relation of these findings to changes in perinatal care in the early 1990s is not known.