Abstract
BACKGROUND: Heart failure (HF) hospitalization is increasing in Japan's aging population. Current guidelines recommend daily biometric monitoring for patients with HF to facilitate early clinical intervention. However, promoting patient self-management remains insufficient. Therefore, we assessed the usefulness of the LAVITA telemonitoring system, which automatically obtains and stores the biometric data of patients with HF via wireless devices. METHODS AND RESULTS: This prospective, single-arm, multicenter cohort study enrolled patients with HF. Patients were introduced to the LAVITA telemonitoring system and trained to measure body weight, blood pressure, pulse rate, oxygen saturation (SpO(2)), physical activity with activity trackers (AT), and electronic patient-reported outcomes (ePRO). The primary outcome was the measurement rate of each cetology at 9-12 weeks post-discharge. The secondary outcomes included the subgroup analyses by age, sex, and left ventricular function. Thirty patients continued to use the system at home. The measurement rates of patient data were as follows: body weight 92.4% (interquartile range [IQR] 83.3-97.8%); blood pressure 95.6% (IQR 84.8-98.5%); pulse rate 96.5% (IQR 86.5-98.8%); SpO(2) 93.1% (IQR 76.6-97.9%); AT 88.4% (IQR 31.3-98.5%); and ePRO 76.9% (IQR 26.4-95.9%). The subgroup analysis did not significantly differ. CONCLUSIONS: The LAVITA telemonitoring system had high measurement rates for the biometric data of patients with HF, including elderly patients. Hence, it can possibly improve patient self-management and facilitate early clinical intervention.