Preterm Infants Face Lifelong Risks from Rare but Devastating Brain Strokes

A new systematic review in Pediatric Research examines two serious conditions affecting preterm infants: perinatal arterial ischemic stroke (PAIS) and neonatal cerebral sinovenous thrombosis (CSVT). The study highlights the severe and often lifelong consequences these cerebrovascular events can have on babies born before 37 weeks. Researchers analysed data from 2004 to 2025, revealing critical gaps in understanding and treatment.

Preterm infants face a higher risk of PAIS and CSVT as gestational age decreases. Extremely premature neonates are particularly vulnerable. These conditions frequently lead to long-term complications, such as cerebral palsy, motor and cognitive delays, epilepsy, and even death.

Perforator artery strokes account for most PAIS cases in this group. CSVT, meanwhile, often affects the transverse sinus. Risk factors for PAIS include twin-to-twin transfusion syndrome, abnormal fetal heart rates, and low blood sugar after birth. Early detection remains challenging, though diffusion-weighted imaging (DWI) proves more effective than standard scans in spotting early damage.

Despite the severity of these conditions, research remains limited. Few large-scale studies focus solely on preterm infants, leaving significant knowledge gaps. Germany stands out as the only country with official clinical guidelines for early diagnosis and treatment, as outlined by the GNPI. The guidelines address both PAIS and CSVT, aiming to improve outcomes for affected newborns.

Experts stress the urgent need for better prevention strategies, quicker diagnosis, and more effective treatments. Current efforts fall short, leaving many preterm infants without optimal care options.

The review underscores the heavy burden of PAIS and CSVT on preterm infants, from lifelong disabilities to increased mortality. While Germany has taken steps with formal guidelines, broader research and clinical advancements are still needed. Without further progress, extremely premature babies will continue to face preventable risks and lasting health challenges.