Normal sizes of internal jugular veins in children/adolescents aged birth to 18 years at rest and during the Valsalva maneuver

OBJECTIVES: We aimed to establish normal ultrasonographic (US) values of internal jugular vein (IJV) sizes in children/adolescents aged birth to 18 years and to determine the correlation of US measurements with age, height, weight and body surface area (BSA) of children in different age groups. METHODS: Two hundred and thirty-six healthy children (0-18 years) were divided into four groups according to their age (0-2, 3-6, 7-12, and 13-18 …