Testing a Ring-Shaped Blood Pressure Monitor in People With Heart Failure
Compares a wearable ring blood pressure device with standard 24-hour monitoring in heart failure.
Plain-language title generated from the registry record
Registry title: Feasibility and Effectiveness of a Ring-Type Blood Pressure Device (CART-BP) Compared With 24-Hour Ambulatory Blood Pressure Monitoring in HFrEF
Key facts
- Where
- Daegu, South KoreaSee the site
Where in South Korea
- Keimyung University - Dongsan Medical CenterDaegu, South KoreaTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Trial details
- Who runs it
- Keimyung University Dongsan Medical Center
- Trial code
- NCT07626879
- Record updated
- 4 June 2026
- Original description
This study aims to evaluate the feasibility and diagnostic accuracy of the CART-BP ring-type wearable blood pressure monitoring device in comparison with 24-hour ambulatory blood pressure monitoring (ABPM) in patients with heart failure with reduced ejection fraction (HFrEF, LVEF ≤ 40%). As a multi-center, prospective, exploratory study, 100 patients will be enrolled at two tertiary hospitals in South Korea. The agreement between the two devices in 24-hour mean, daytime, and nighttime blood pressure measurements will be assessed per ISO 81060-2:2018 criteria.Read full original descriptionShow less
Feasibility and Effectiveness of a RING-type Blood Pressure Measurement Device (CART-BP) Compared With 24-Hour Ambulatory Blood Pressure Monitoring Device in Patients With Heart Failure With Reduced Ejection Fraction (RING-HFrEF)
This study aims to evaluate the feasibility and diagnostic accuracy of the CART-BP ring-type wearable blood pressure monitoring device in comparison with 24-hour ambulatory blood pressure monitoring (ABPM) in patients with heart failure with reduced ejection fraction (HFrEF, LVEF ≤ 40%). As a multi-center, prospective, exploratory study, 100 patients will be enrolled at two tertiary hospitals in South Korea. The agreement between the two devices in 24-hour mean, daytime, and nighttime blood pressure measurements will be assessed per ISO 81060-2:2018 criteria.
Inclusion: Age ≥ 19 years (male or female); Diagnosed with heart failure and currently under treatment; Left ventricular ejection fraction (LVEF) ≤ 40% confirmed by echocardiography performed within 1 year prior to enrollment; Able to undergo both 24-hour ambulatory blood pressure monitoring and ring-type blood pressure measurement; Voluntarily provided written informed consent to participate in this clinical study.
Exclusion: Office blood pressure: SBP < 90 mmHg, or DBP < 50 mmHg, or SBP > 180 mmHg, or DBP > 100 mmHg; Unable to perform 24-hour ambulatory blood pressure monitoring; Unable to wear or use the ring-type blood pressure device; Variability in three consecutive resting cuff blood pressure measurements ≥ 20 mmHg (SBP) or ≥ 10 mmHg (DBP); Insufficient valid ABPM readings: < 25 daytime or < 12 nighttime measurements per ESH criteria; or < 25 daytime or < 12 nighttime valid readings from the ring-type device; Pregnant, suspected pregnancy, or breastfeeding; Judged by the investigator to be legally or mentally unfit to participate in the clinical study.