C R Jones1, K Taylor, P Chowienczyk, L Poston, A H Shennan. 1. Fetal Health Research Group and Department of Obstetrics and Gynaecology, Centre for Cardiovascular Research and Medicine, Guy's, King's and St Thomas' School of Medicine, St Thomas' Hospital, London SE1 7EH, UK.
Abstract
OBJECTIVE: To assess the clinical accuracy of the Mobil O Graph (version 12) ambulatory blood pressure monitor in an adult population. METHODS: The accuracy of the device was assessed by predefined criteria (British Hypertension Society, BHS) in 85 subjects recruited from the patients and staff in a teaching hospital. A series of same-arm sequential blood pressure measurements were taken: first two observers taking simultaneous mercury readings, followed by a reading with the Mobil O Graph ambulatory monitor. A total of seven readings were taken from each subject in the sitting position. The data were then analysed according to the BHS protocol and the criteria of the Association for the Advancement of Medical Instrumentation (AAMI). RESULTS: The Mobil O Graph ambulatory monitor fulfilled the criteria of the BHS protocol, achieving a grade B for systolic blood pressure (SBP) and a grade A for diastolic blood pressure (DBP). The mean differences were -2+/-8 mmHg for SBP and -2+/-7 mmHg for DBP. The device therefore also passed the AAMI standard (the mean to be within 5+/-8 mmHg). CONCLUSION: The Mobil O Graph ambulatory monitor performed in a satisfactory manner according to the BHS and the AAMI criteria and can therefore be recommended for clinical use in the general population.
OBJECTIVE: To assess the clinical accuracy of the Mobil O Graph (version 12) ambulatory blood pressure monitor in an adult population. METHODS: The accuracy of the device was assessed by predefined criteria (British Hypertension Society, BHS) in 85 subjects recruited from the patients and staff in a teaching hospital. A series of same-arm sequential blood pressure measurements were taken: first two observers taking simultaneous mercury readings, followed by a reading with the Mobil O Graph ambulatory monitor. A total of seven readings were taken from each subject in the sitting position. The data were then analysed according to the BHS protocol and the criteria of the Association for the Advancement of Medical Instrumentation (AAMI). RESULTS: The Mobil O Graph ambulatory monitor fulfilled the criteria of the BHS protocol, achieving a grade B for systolic blood pressure (SBP) and a grade A for diastolic blood pressure (DBP). The mean differences were -2+/-8 mmHg for SBP and -2+/-7 mmHg for DBP. The device therefore also passed the AAMI standard (the mean to be within 5+/-8 mmHg). CONCLUSION: The Mobil O Graph ambulatory monitor performed in a satisfactory manner according to the BHS and the AAMI criteria and can therefore be recommended for clinical use in the general population.
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