Related Experiment Video
Updated: May 16, 2026
A Novel Digital Platform for a Monitored Home-based Cardiac Rehabilitation Program
Published on: April 19, 2019
Can individualized weight monitoring using the HeartPhone algorithm improve sensitivity for clinical deterioration of
Mark T Ledwidge1, Rory O'Hanlon, Lorraine Lalor
1Heart failure Unit, St Vincent's University Hospital, Elm Park, Dublin 4, Ireland. mark@heartbeat-trust.org
Aims:
Previous studies have demonstrated poor sensitivity of guideline weight monitoring in predicting clinical deterioration of heart failure (HF). This study aimed to evaluate patterns of remotely transmitted daily weights in a high-risk HF population and also to compare guideline weight monitoring and an individualized weight monitoring algorithm.
Methods And Results:
Consenting, consecutive, high-risk patients were provided with a mobile phone-based remote weight telemonitoring device. We aimed to evaluate population vs. individual weight variability, weight patterns pre- and post-events of clinical deterioration of HF, and to compare guideline weight thresholds with the HeartPhone algorithm in terms of sensitivity and specificity for such events. Of 87 patients recruited and followed for an average of 23.9 ± 12 weeks, 19 patients experienced 28 evaluable episodes of clinical deterioration of HF. Following a post-discharge decline, the population average weight remained stable for the follow-up period, yet the 7-day moving average of individual patients exceeded 2 kg in three-quarters of patients. Significant increases in weight were observed up to 4 days before HF events. The HeartPhone algorithm was significantly more sensitive (82%) in predicting HF events than guideline weight thresholds of 2 kg over 2-3 days (21%) and a 'rule of thumb' threshold of 1.36 kg over 1 day (46%).
Conclusions:
An individualized approach to weight monitoring in HF with the HeartPhone algorithm improved prediction of HF deterioration. Further evaluation of HeartPhone with and without other biomarkers of HF deterioration is warranted.
Related Concept Videos
01:30Pulse rhythm
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
01:22Heart Failure VI: Adjunct Therapies
01:30Heart Failure VII: Nursing Interventions
01:23Holter Monitor: 24-Hour Monitoring
01:30Equipments Used To Measure Blood Pressure
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
01:28Special considerations while measuring blood pressure
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.