School-based screening for high blood pressure in children and adolescents: a systematic scoping review

School-based programs represent a potential avenue for conducting population-wide paediatric blood pressure (BP) screening. The aim of this review was to systematically scope peer-reviewed literature reporting school-based BP screening, with respect to measurement protocols, diagnostic process coverage, and implementation considerations. Only peer-reviewed articles in English across PubMed, OVID Medline and OVID Embase were included. Two authors independently screened the article titles and abstracts prior to undertaking a full-text review. All disagreements were resolved through discussion and agreement. From each study, four categories of information were extracted: general information, BP measurement methodology, diagnostic process coverage, and implementation strategies. Each article was then assigned to one of three categories regarding the stated or implied study objectives: general school-based research incorporating BP measurement, hypertension prevalence studies, or hypertension screening studies. Of the 112 articles meeting the inclusion criteria, only 17 were categorised as hypertension screening studies. Within these, there was substantial variability in BP measurement techniques and adherence to the diagnostic process recommended by the American Academy of Pediatrics. Additionally, there was minimal reporting on implementation strategies. A pragmatic, standardised protocol for school-based BP screening is needed that includes recommended measurement methods, considers the trade-offs (in terms of feasibility and economics) of covering more or less of the diagnostic process in schools vs health care settings, and covers approaches to optimise implementability.