Understanding TAPS Brain Injury
Twin anemia-polycythemia sequence (TAPS) is a rare complication occurring in monochorionic twin pregnancies. Recent research highlights the prevalence of TAPS brain injury among these vulnerable infants. Furthermore, identifying these risks early can significantly improve management strategies for neonatal care. Consequently, clinicians must prioritize neuroimaging for twins diagnosed with this chronic inter-twin blood transfusion disorder.
Prevalence of TAPS Brain Injury
Studies indicate that approximately 16.8% of twins with TAPS experience some form of brain injury. Interestingly, the majority of these injuries, about 93%, originate during the postnatal period. Additionally, no significant difference exists in injury rates between spontaneous and post-laser TAPS cases. Therefore, all TAPS survivors require careful monitoring regardless of how the condition developed. However, severe brain injury remains less common, affecting roughly 7.4% of the population.
Risk Factors and Developmental Outcomes
Gestational age at birth serves as a major independent risk factor for neurological complications. Specifically, infants born at lower gestational ages face a higher risk of brain injury. Moreover, research shows that donor and recipient twins generally share similar risks for severe neurological damage. In contrast, most infants with TAPS brain injury do not necessarily show significant long-term neurodevelopmental impairment. Nevertheless, specialized follow-up remains essential to ensure optimal growth and development for these children.
Frequently Asked Questions
Q1: When does brain injury typically occur in TAPS?
Most brain injuries associated with TAPS, approximately 93%, develop after the twins are born rather than during pregnancy.
Q2: Is the risk different for donor versus recipient twins?
No, severe brain injury rates are comparable between donor and recipient twins, occurring in about 6.5% and 8.3% respectively.
References
- Rondagh M et al. Brain injury in twin anemia-polycythemia sequence: prevalence, severity and long-term neurodevelopmental outcome. Ultrasound Obstet Gynecol. 2026 Mar 30. doi: 10.1002/uog.70209. PMID: 41906972.
- Tollenaar LSA, et al. High risk of long-term neurodevelopmental impairment in donor twins with spontaneous twin anemia\u2013polycythemia sequence. Ultrasound Obstet Gynecol. 2020;55(1):39-46.
- Slaghekke F, et al. Neurodevelopmental outcome in twin anemia-polycythemia sequence after laser surgery for twin-twin transfusion syndrome. Ultrasound Obstet Gynecol. 2014;44(3):316-321.