The Role of Perinatal Experts in Birth Injury Claims

Defining the Scope of the Perinatal Expert

In birth injury litigation, the perinatal expert serves as a bridge between the physiological state of the infant and the clinical management provided during the transition from the intrapartum period to the neonatal unit. While obstetric experts assess maternal health and the labour process, the perinatal paediatrician—frequently a neonatologist with specific expertise in fetal-to-neonatal transition—evaluates the infant’s clinical condition at birth and throughout the early neonatal period. This distinction is vital for determining whether a neurodevelopmental outcome originated from antepartum factors, intrapartum events, or postnatal clinical management.

The role of the expert is to assist the court in parsing the nuances of birth injury and cerebral palsy management to establish whether a causal link exists between an alleged breach of duty and the child’s injury. This requires a comprehensive review of maternal and neonatal records, including foetal heart rate traces, cord blood gas results, Apgar scores, and serial neurological assessments documented in the days following delivery.

Evidential Requirements and Chronology

The accuracy of an expert’s opinion relies on the quality and completeness of the records. When instructing an expert, solicitors should ensure that the brief includes:

• Complete neonatal medical records, including daily progress notes and nursing observations.
• Diagnostic imaging, such as cranial ultrasound or MRI reports, ideally supported by access to original source images.
• Laboratory investigations, including serial blood gas analysis, haematology, and metabolic screening.
• Growth charts and antenatal reports, which provide context regarding the infant’s physiological status prior to the labour process.
• Admission and discharge summaries from the neonatal intensive care unit (NICU).

A meticulous chronology is essential. The expert must map clinical findings against the temporal progression of the child’s symptoms. This analysis often involves assessing for alternative explanations, such as metabolic disorders, genetic conditions, or sub-clinical infections, which may present similarly to hypoxic-ischaemic events. An expert’s opinion is a matter of clinical judgement based on the evidence; it is not an absolute determination of fact, as findings of causation are reserved for the court.

Distinguishing Clinical Findings from Causation

An adverse outcome does not automatically equate to a breach of duty. The perinatal expert’s task is to provide an objective analysis of whether the standard of care fell below that of a responsible body of professional peers, and if so, whether such a breach made a material difference to the outcome. Under the Civil Procedure Rules, particularly the requirements set out under CPR Part 35, the expert has an overriding duty to the court to provide independent, unbiased evidence.

Where the court directs that evidence be given by a single joint expert under CPR 35.7, the instruction of that expert is governed by CPR 35.8. That expert must remain independent to all parties. Solicitors should ensure the scope of the report under CPR 35.10 is strictly followed. If an expert finds the instructions ambiguous or insufficient to form a robust opinion, they may use CPR 35.14 to seek direction from the court.

Managing Uncertainty and Expert Discussion

Clinical medicine is inherently subject to degrees of uncertainty. When there is a divergence of opinion, the court may direct experts to engage in discussions under CPR 35.12 to narrow the issues and identify areas of agreement and disagreement. This is a professional exchange intended to assist the court in understanding the clinical basis for differing conclusions. When instructing an expert, consider the following areas for clarification:

• Does the neonatal neurological presentation indicate an acute event, or does it suggest a pre-existing or chronic condition?
• Are there findings in the records that suggest an alternative aetiology for the injury, and have these been adequately investigated?
• Is the timing of the injury consistent with the reported intrapartum clinical events?
• What are the limitations of the current clinical understanding of this specific presentation?

By focusing the letter of instruction on these precise clinical questions, solicitors facilitate a more targeted and useful report, ensuring evidence remains relevant and grounded in contemporaneous findings. Experts should be encouraged to specify where clinical evidence is inconclusive rather than speculating, as this professional candour is essential for the court’s assessment.