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  • Title: Concept, study design, and baseline blood pressure control status of the nationwide prospective HI-JAMP study using multisensor ABPM.
    Author: Kario K, Tomitani N, Nishizawa M, Harada N, Kanegae H, Hoshide S.
    Journal: Hypertens Res; 2023 Feb; 46(2):357-367. PubMed ID: 36380199.
    Abstract:
    The Home-Activity Information and Communication Technology (ICT)-based Japan Ambulatory Blood Pressure Monitoring Prospective (HI-JAMP) study is a nationwide general practitioner-based cohort of medicated hypertensive patients that began in 2017. The primary objective of this study is to clarify which blood pressure (BP) measure is the best predictor of cardiovascular disease: office, home, or ambulatory BP. To this end, we used a newly developed ICT-based multisensor ambulatory BP monitoring (IMS-ABPM) device (TM-2441; A&D Company), which can also be used for home BP monitoring and is equipped with a high-sensitivity actigraph, a thermometer, and a barometer. This is the first study to evaluate three hemodynamic properties under resting home and active ambulatory conditions using the same device: (1) BP variability; (2) trigger-specific BP sensitivity to physical activity, temperature, and atmospheric pressure; and (3) central hemodynamics. A total of 2754 patients were enrolled, and 2731 patients with the required number of ambulatory BP readings (at least 6 daytime and 3 nighttime readings) were included in the final analysis. The overall patient group showed worse control of morning and nighttime BPs compared to office and daytime BPs, and the control rate was also poor among patients with a higher number of antihypertensive drugs. In conclusion, the baseline data of the HI-JAMP study demonstrated that morning home and nighttime BP remain difficult to control even among patients taking two or more hypertensive agents. By simultaneously considering office, home, and ambulatory BPs, the HI-JAMP study will contribute to the development of hypertension management strategies and new BP indices.
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