CONCLUSION: AFS rarely led to delivery as an obstetric intervention, and perinatal outcomes were overall favorable. There is no clear correlation between an abnormal AFS test and perinatal mortality due to its low incidence, but a normal AFS test is overall reassuring. Most preterm deliveries associated with abnormal AFS were complicated by other comorbidities that necessitated delivery. New AFS techniques with improved ability to identify the fetus most at risk are needed to improve perinatal outcomes and decrease unnecessary interventions.

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