The Impact of Synchronous Telehealth Services With a Digital Platform on Day-by-Day Home Blood Pressure Variability in Patients with Cardiovascular Diseases: Retrospective Cohort Study

Overview

Journal J Med Internet Res

Publisher JMIR Publications

Specialty Medical Informatics

Date 2022 Jan 10

PMID 35006089

Authors

Ying-Hsien Chen

Chi-Sheng Hung

Ching-Chang Huang

Jen-Kuang Lee

Jiun-Yu Yu

Yi-Lwun Ho

Affiliations

Soon will be listed here.

Abstract

Background: Hypertension is associated with a large global disease burden with variable control rates across different regions and races. Telehealth has recently emerged as a health care strategy for managing chronic diseases, but there are few reports regarding the effects of synchronous telehealth services on home blood pressure (BP) control and variability.

Objective: The objective of this study is to investigate the effect of synchronous telehealth services with a digital platform on home BP.

Methods: This retrospective study was conducted by the Taiwan ELEctroHEALTH study group at the Telehealth Center of the National Taiwan University Hospital. We analyzed home BP data taken from 2888 patients with cardiovascular disease (CVD) enrolled in our telehealth program between 2009 to 2017. Of the 2888 patients with CVD, 348 (12.05%) patients who received home BP surveillance for ≥56 days were selected for BP analysis. Patients were stratified into three groups: (1) poorly controlled hypertension, (2) well-controlled hypertension, and (3) nonhypertension. The mean, SD, coefficient of variation (CV), and average real variability were calculated.

Results: Telehealth interventions significantly and steadily reduced systolic blood pressure (SBP) in the poorly controlled hypertension group from 144.8.2±9.2 to 133.7±10.2 mmHg after 2 months (P<.001). BP variability reduced in all patients: SBP-SD decreased from 7.8±3.4 to 7.3±3.4 after 2 months (P=.004), and SBP-CV decreased from 6.3±2.5 to 5.9±2.6 after 2 months (P=.004). Event-free survival (admission) analysis stratified by SBP-SD showed longer time to first hospitalization for Q1 patients compared with Q4 patients (P=.02, odds ratio 2.15, 95% CI 1.18-3.89).

Conclusions: Synchronous telehealth intervention may improve home BP control and decrease day-by-day home BP variability in patients with CVD.

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