High-Dose Therapy Shows Lasting Benefits for Infants After Perinatal Stroke

Families of infants who suffered a stroke before birth or within the first month of life can find hope in a new study presented at the American Stroke Association's International Stroke Conference 2026.

Researchers found that an intensive, home-based therapy program significantly improved movement and daily use of the weaker arm and hand in young children, particularly when delivered at higher doses.

Understanding Stroke in Infants

Strokes can happen before birth or soon after delivery, but they are typically linked to older persons. This condition, called Perinatal Arterial Ischemic Stroke (PAIS), is the most common type of stroke in children.

Many children who experience PAIS develop hemiparesis, meaning one side of the body, usually an arm and hand, is weaker and harder to control. This can affect everyday activities such as:

Reaching and grasping toys
Crawling and balance
Self-feeding
Gesture-based communication

For years, treatment decisions for these very young children were based mostly on studies involving older children with cerebral palsy. To date, there has been limited research on infants and toddlers.

What Did the Study Test?

The Phase 3 clinical trial evaluated a therapy program called I-ACQUIRE, a specialised form of Constraint-Induced Movement Therapy (CIMT) designed specifically for babies and toddlers.

The idea behind this therapy is simple but powerful:

The stronger arm is gently restricted using a lightweight cast.
The child is encouraged to use their weaker arm.
Therapy sessions are highly interactive and task-based.
Treatment is delivered in the childâ€™s home or natural environment.
Parents are actively involved in the program.

A total of 167 children aged 8 months to 3 years with confirmed PAIS participated in the study across 15 U.S. centres.

Children were randomly assigned to:

High-dose therapy: 6 hours per day, 5 days a week for 4 weeks (120 hours total)
Moderate-dose therapy: 3 hours per day, 5 days a week for 4 weeks (60 hours total)
Usual care: About 1 hour each of weekly occupational and physical therapy

What Were the Results?

At the End of 4 Weeks

Both the moderate- and high-dose therapy groups acquired approximately 3 new motor skills.
The usual care group gained about 1 new skill.
Improvements included better reaching, grasping, and object manipulation.

Although the number of new skills gained was smaller than researchers initially expected, the gains were still meaningful.

At 6 Months

This is where the difference became clearer.

Children in the high-dose group showed significantly greater long-term improvement than those in the moderate-dose and usual-care groups.

Parents reported noticeable improvements in real-life activities such as:

Playing with toys
Using gestures
Performing new self-help skills

Interestingly, even children in the usual care group showed some improvement over six months. However, parents did not consistently report real-world functional changes in this group.

Why Is This Important?

According to the studyâ€™s lead author, Dr Sharon Ramey:

"The potential for an infant to recover from an early stroke far exceeds what was once considered a fairly grim prognosis."

Parents in the study often reported that their childâ€™s progress exceeded expectations. As children improved, families reported renewed hope and increased confidence in their child's future independence.

The study also confirmed that:

Intensive therapy is safe
Families can successfully follow structured programs at home
Early, structured intervention can make a measurable difference

What Does This Mean for Families?

This research highlights a critical message:

Early, structured, and intensive rehabilitation can significantly improve arm function in young children after stroke, especially when delivered at higher intensity.
However, every child responds differently. Identifying which children benefit the most from specific therapy approaches will be an important focus of future research.

Accessing Pediatric Rehabilitation Through MediRehab by MediGence

The correct rehabilitation program can be a lifesaver for families dealing with the difficulties of early stroke recovery.

Through MediRehab, MediGence's personalised rehabilitation service, families can:

Access structured pediatric neuro-rehabilitation programs
Receive therapy plans tailored to the child's specific motor needs
Explore home-based or hospital-based rehabilitation options
Connect with experienced pediatric neurologists and rehabilitation specialists
Receive end-to-end support, including care coordination and travel assistance (if required)

MediRehab focuses on individualised recovery plans designed to maximise functional gains while supporting parents throughout the journey.

If your child has experienced a perinatal stroke and you are exploring rehabilitation options, early intervention and structured therapy could play a crucial role in improving long-term outcomes.

To learn more about personalised paediatric rehabilitation options, contact the MediGence team today.