Improved Blood Pressure Control Using an Interactive Mobile Phone Support System

Ulrika Bengtsson, Karin Kjellgren, Inger Hallberg, Magnus Lindwall, Charles Taft, Ulrika Bengtsson, Karin Kjellgren, Inger Hallberg, Magnus Lindwall, Charles Taft

Abstract

This explorative, longitudinal study evaluated the effect of the daily use of a mobile phone-based self-management support system for hypertension in reducing blood pressure (BP) among 50 primary care patients with hypertension over 8 weeks. The self-management system comprises modules for (1) self-reports of BP, pulse, lifestyle, symptoms, and well-being; (2) delivery of reminders and encouragements; and (3) graphical feedback of self-reports. Daily use of the support system significantly reduced BP (systolic BP -7 mm Hg, diastolic BP -4.9 mm Hg) between baseline and week 8, with daily improvements leveling off as the study progressed. Three homogenous subsets of patients were identified who, despite different initial BP levels, showed similar decreases in BP during the study, indicating that patients benefited irrespective of baseline BP. In showing significant reductions in BP, our results suggest that the self-management support system may be a useful tool in clinical practice to help patients self-manage their hypertension.

© 2015 The Authors. The Journal of Clinical Hypertension Published by Wiley Periodicals, Inc.

Figures

Figure 1
Figure 1
Smoothed histograms of data sets from the four pre‐trial blood pressure measurements (blue curves) and from week 8 of the study (red dashed curves) (N=50).
Figure 2
Figure 2
Between‐person heterogeneity in systolic (a) and diastolic (b) blood pressure for all participants (1‐class model) and description of the classes in the best‐fitting three‐class models for systolic (c) and diastolic (d) blood pressure.

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