Hypertension is one of the leading causes of heart disease, and it is increasingly prevalent in children. Tammy Brady, M.D., Ph.D., medical director of the pediatric hypertension program at Johns Hopkins Children’s Center, discusses her research on the importance of the size of blood pressure cuffs for accurate readings. For this research, several trials were designed to determine the effect of the patient’s positioning, preparation and cuff size for blood pressure monitoring.