Evaluating Barriers to Stroke Screening and Prevention in Children With Sickle Cell Disease

DISPLACE (Dissemination and Implementation of Stroke Prevention: Looking At the Care
Environment) is a multi-center, national NHLBI-funded grant to evaluate the real world
implementation of the STOP protocol in which transcranial Doppler (TCD), a measure of
cerebral blood vessel velocity, is used to screen for stroke risk in children ages 2-16 with
sickle cell anemia (SCA). Based on the STOP (Stroke Prevention Trial in Sickle Cell Anemia)
protocol, children identified as high risk of stroke by TCD are initiated on chronic red cell
transfusion therapy (CRCT) for stroke prevention. Children with normal TCD are screened
annually from the age of 2 until they are 16 years of age.

This will be a THREE-part study beginning with Part 1 - a retrospective case record review
followed by Part 2 - a multi-level qualitative assessment of barriers and enablers to TCD
screening and initiation of chronic red blood cell transfusions and later adding Part 3 - a
multi-center implementation clinical trial.The investigators will compare two implementation
interventions to improve TCD screening.

There are three aims of the grant and each aim is equivalent to the respective parts of the
grant (i.e. Part 1 covers 1 aim). There are a total 28 consortium sites. The Medical
University of South Carolina is the lead institution for this study.

Inclusion Criteria:

- Age is >2 and <16 at time of review (from 2012-2016)

- have documented sickle cell anemia

- primary language is English

- patient at a DISPLACE consortium institution

Caregiver Characteristics:

Parent or guardian of patient who meets above criteria Primary language is English Has the
cognitive capacity to complete questionnaires

EXCLUSION CRITERIA:

Child Characteristics:

Experiencing current acute complications of sickle cell disease requiring hospitalization
or an acute care visit (e.g., pain crises, acute chest syndrome, acute cerebrovascular
events/stroke or active infection/fever)

Caregiver Characteristics:

Has a child experiencing current acute complication of sickle cell disease, such as pain
crisis, acute chest syndrome, stroke, or infection.