Preterm Babies Face Hidden Stroke Risks With Lifelong Consequences

A new review in Pediatric Research examines two serious conditions affecting preterm infants: perinatal arterial ischemic stroke (PAIS) and neonatal cerebral sinovenous thrombosis (CSVT). These events can lead to lifelong disabilities, yet little is known about their impact on babies born before 37 weeks. The study highlights major gaps in diagnosis, treatment, and prevention for this vulnerable group.

The review analysed data from 14 studies, covering 132 cases of PAIS and 57 cases of CSVT in preterm infants. Researchers found that the risk of these strokes rises as gestational age drops, leaving the most premature babies at greatest danger.

Distinct risk factors for PAIS in preterm infants include twin-to-twin transfusion syndrome, abnormal fetal heart rates, and low blood sugar after birth. CSVT, meanwhile, often affects the transverse sinus and carries a high mortality rate. Both conditions can result in motor impairments, cognitive delays, epilepsy, and cerebral palsy.

Early detection remains difficult due to subtle symptoms and limited imaging tools. While diffusion-weighted imaging (DWI) picks up early signs of injury better than standard scans, no country has established official guidelines for diagnosing or treating these strokes in preterm babies. The lack of large-scale studies focused solely on this population further complicates efforts to improve care.

The findings underscore the urgent need for better diagnostic methods and treatment protocols. Without clear guidelines or targeted research, preterm infants with PAIS or CSVT face higher risks of long-term disability and death. Experts stress that early intervention could reduce harm, but progress depends on addressing critical knowledge gaps.