Understanding the clinical utility of stillbirth investigations: a scoping review

Abstract

Background: Investigating the causes of stillbirth is crucial for both parents and healthcare providers as it helps explain why the baby died, guides clinical care in future pregnancies, and aids in developing strategies to prevent stillbirth. The usefulness or utility of investigations for stillbirth is poorly defined and unclear. As a result, protocols for investigating the causes of stillbirth are currently based on clinical consensus and fail to prioritise investigative approaches that are most effective at determining a cause of death. Objectives: The objectives of this scoping review were to identify the available evidence, key characteristics, and knowledge gaps regarding the utility of stillbirth investigations. Search strategy: An a priori protocol was implemented and included a systematic search in MEDLINE, CINAHL, EMBASE, Scopus, and Cochrane from inception until 28 May 2024. Selection criteria: Studies examining stillbirth investigations, yield, and value were included. Data collection and analysis: Data were collected using a purpose-built data extraction tool and an analysis was undertaken. Results: 57 potentially eligible studies were identified, and 34 studies (with 11,410 stillbirths) were included. Three studies examined clinical utility using a comprehensive testing protocol. Definition of utility or value of investigations varied across the studies, classification system for cause of death and investigation protocols varied. Placental pathology was reported as the most useful investigation in 65%–96% of cases, identified a cause of death in 61–71% of cases and impacting the medical management in 36% of cases (13 studies, 5,169 stillbirths). Autopsy can identify the cause of death in 36–77% of cases and provided new information in 17–26% of cases (17 studies, 4,336 stillbirths). Genetic analysis was useful in 29% of cases (seven studies, 1,886 stillbirths). One study (512 stillbirths) examined the value of investigation by presenting clinical scenario. Conclusions: This review indicates that Investigation protocols for stillbirth should include placental pathology, autopsy, and genetic testing. Future studies should address the value of tests by presenting clinical scenarios, use of a consistent definition of stillbirth, classification system and measurement of investigation value. Show more