VALIDATION OF THE TAKEDA-2421 AMBULATORY BLOOD-PRESSURE MONITOR IN CHILDREN

The purpose of this study was to assess the accuracy of an ambulatory monitor (Takeda 2421; A&D company) which measures blood pressure using oscillometric and Korotkoff methods, in children. Blood pressure was measured simultaneously by the device and two observers in 529 childre n aged 7-15 years. The Korotkoff method received BHS grade A for sitti ng and standing readings in all age groups except for age 13-15 years (grade C). The diastolic readings (phase V) received grade B for sitti ng and C when standing. The oscillometric method received grade C or w orse for systolic and diastolic blood pressure in both sitting and sta nding positions except for systolic readings in those aged 13-15 years (grade B). During the ambulatory phase 30% of the Korotkoff readings and 4% of the oscillometric readings gave an error code. The Takeda 24 21 ambulatory monitor achieved generally satisfactory grades using the Korotkoff system but the oscillometric readings were generally unacce ptable. Ambulatory devices should be specifically validated in childre n before being accepted into clinical paediatric practice.