Rare Brain Disorders in Preterm Babies Pose Lifelong Risks, Study Warns

A new systematic review has highlighted the serious risks of two rare but devastating conditions in preterm babies. Published in Pediatric Research, the study examines perinatal arterial ischemic stroke (PAIS) and neonatal cerebral sinovenous thrombosis (CSVT). Both disorders are linked to severe long-term health problems, yet remain poorly understood in this vulnerable group.

The review gathered data from 14 studies, identifying 132 cases of PAIS and 57 cases of CSVT in babies born before 37 weeks. Researchers warn that extremely premature babies face the highest risks, with incidence rising as gestational age falls.

The study pinpointed several distinct risk factors for PAIS in preterm babies. These include twin-to-twin transfusion syndrome, abnormal fetal heart rates, and neonatal hypoglycemia. Meanwhile, CSVT cases showed a marked tendency to affect the transverse sinus, while PAIS was most often caused by perforator artery strokes.

Early detection remains a challenge, but the review found that diffusion-weighted imaging (DWI) is far more effective than conventional scans at spotting early ischemic damage. Despite this, no country has established official guidelines for diagnosing or treating these conditions in preterm babies. Current prevention strategies are described as aspirational, relying on general clinical vigilance rather than evidence-based protocols.

The long-term consequences of these cerebrovascular events are severe. Affected babies face high rates of neurological impairment, motor and cognitive delays, epilepsy, and even death. Many survivors develop cerebral palsy, adding to the significant burden of disability linked to these disorders.

Researchers stressed the urgent need for large-scale, controlled studies focused solely on preterm babies. They noted that existing knowledge gaps leave clinicians without clear guidance, leaving many cases undiagnosed or poorly managed.

The findings underscore the critical need for better detection, treatment, and prevention of PAIS and CSVT in preterm babies. Without formal guidelines or targeted research, vulnerable babies remain at risk of lifelong complications. The study calls for a coordinated, global effort to address these gaps and improve outcomes for the smallest and sickest newborns.