Home blood pressure monitoring

HECTOR NOLLY,; MARCELO ROMERO, ; ALEJANDRO NOLLY, ; MARTIN SILVA,; MARIELA NOLLY.

Congreso; American Hypertension Congress; 2005

P-91 HOME BLOOD PRESSURE MONITORING Hector Nolly, Marcelo Romero, Alejandro Nolly, Martin Silva, Mariela Nolly. Medicine, Hypertension Center, Mendoza, Mendoza, Argentina. Home-blood pressure monitoring have been increasingly encouraged by the JNC and the ESH guidelines. Primary prevention is necessary for the management of hypertension in order to facilitate optimal control of blood pressure during the 24 hours of every day. However, prior to marketing, blood pressure measuring devices should be independently validated for safety and accuracy by using standard guidelines. The clinical evaluation of a new device for self-blood pressure (BP) measurement, the Braun Vital Scan Plus 1650 wrist BP monitor, according to the International Protocol (IP) of the ESH (2002). Measurements of systolic and diastolic BP in 33 subjects were obtained using the mercury sphygmomanometer (Baumanometer) and the Braun BP VitalScan Plus 1650 device. A heterogeneous group of normotensive and hypertensive patients, still not under treatment, was recruited to assure a wide range of blood pressure, ages, arm and wrist circumferences. Nine sequential same-arm measurements between the test device and the standard mercury sphygmomanometer were carried according to the IP of the ESH in three steps (Phase 1, Phase 2.1 and Phase 2.2). The device passed Phase 1 and Phase 2.1 as 74 systolic and 77 diastolic readings fell within 5 mmHg exceeding the 65 required for being approved. It also passed the Phase 2.2 as 25 subjects for systolic and 28 for diastolic had at least 2/3 of their comparisons falling within 5 mmHg, exceeding the 22 required and only 2 of the 33 subjects had their three comparisons over 5 mmHg apart. The IP admit that at most 3 subjects may be under that limit. The difference-against-mean plots showed that the device HgS disagreement was -2.57 4.36 for systolic blood pressure (Braun lower) and 0.83 4.97 for diastolic blood pressure (Braun higher) respectively. Conclusions: The IP tested “subject measurements” and “subject accuracy” of the new device. The equipment passed the different phases satisfactorily. Therefore, it can be used at home for self blood pressure measurements as an adjunct to the physician’s effort to control blood pressure in their hypertensive patients. Key Words: Blood Pressure Measurement, Hypertension