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Heart FailureHF-TRACKNCT06334822

HF-TRACK: A UK RCT of an Passive Heart Failure Monitoring and Tracking Device

A study testing Heartfelt Device installed, Questionnaires and Heartfelt Device in pharmacy in people with Heart Failure, run by Heartfelt Technologies at 11 sites in United Kingdom.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial summary

The objective of our research is to evaluate the effectiveness of an innovative medical device designed to measure foot and lower leg sizes in detecting early indications of deteriorating heart failure. This health condition frequently causes leg swelling and breathing difficulties due to fluid accumulation. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Heart Failure
What is being tested?
Heartfelt Device installed, Questionnaires and Heartfelt Device in pharmacy
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
186 participants
Where
11 sitesUnited Kingdom
Study dates
11 Jul 2024to 31 Jan 2027
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • In order to be eligible to participate in this trial, an individual must meet all of the following criteria:
  • Provision of signed and dated informed consent form (e-consent via website or app is acceptable).
  • Women or men, aged 18 years or older [No maximum age].
  • Diagnosis of heart failure at least 3 months previously
  • Receiving diuretics on a daily basis
  • Peripheral oedema reported on at least one HF-related hospitalisation in the last 4 years (as documented in EPR).
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  • Hospitalised for HF OR on a Virtual Ward for HF OR has received IV diuretic treatment in the last 12 months, or treated with at least 80 mg furosemide (or equivalent) orally per day.
  • For women of reproductive potential: use of highly effective contraception for at least 1 month prior to screening and agreement to use such a method during study participation and for an additional 6 weeks after the end of the study.
  • Is considered by the investigator to be non-adherent OR at high risk of HF hospital readmissions.

Who cannot join

  • An individual who meets any of the following criteria will be excluded from participation in this study:
  • bandages to lower limbs every day
  • amputation of both feet
  • regular wheelchair user inside their home
  • bed-bound
  • no fixed abode
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  • taking part in a conflicting evaluation/study that could confound the results of this evaluation and/or impact clinical interventions and participant outcomes
  • Pregnancy or lack of contraceptive measures if of child-bearing potential†
  • Inability to install the device (even with assistance) allowing at least 6 months of data capture by the end of the study.
  • Patients with severe aortic stenosis or awaiting a heart procedure or surgery
  • † This exclusion criterion has been requested by the insurance provider for clinical trial cover.

Trial locations and contacts

11 sites in 1 country.

11 sites in 1 country

United Kingdom11 sites
  • The Ridings Medical Group

    Brough, East Riding Of Yorkshire, HU15 1AY

  • West Suffolk NHS Foundation Trust

    Bury St Edmunds, Suffolk, IP33 2QZ

  • Pillsorted Ltd

    Cambridge, CB22 3GN

  • Croydon Health Services NHS Trust

    Croydon, London, CR7 7YE

  • Modality East Surrey Medical Practice

    Horley, Surrey, RH6 9PT

  • Dr R Raut & Partnership (General Practice)

    Hull, East Riding Of Yorkshire, HU7 5DD

  • DR GT Hendow Surgery

    Hull, HU7 4DW

  • Sutton Manor Pharma Services

    Hull, HU7 4PT

  • James Alexander Family Practice

    Hull

  • Modality Partnership Airedale, Wharfedale & Craven:

    Keighley, West Yorkshire, BD21 1LA

  • Barking, Havering and Redbridge University Hospitals NHS Trust

    London, RM1 2BA

Other trials in United Kingdom

About this study

Official title: Randomised Controlled Trial For Assessing The Effectiveness Of An Inclusive Heart Failure Monitoring And Tracking Solution In The UK.(HF-TRACK)

The objective of our research is to evaluate the effectiveness of an innovative medical device designed to measure foot and lower leg sizes in detecting early indications of deteriorating heart failure. This health condition frequently causes leg swelling and breathing difficulties due to fluid accumulation. Early detection of these symptoms is vital for effective management, potentially preventing the need for hospitalization.

Fluid retention in the lower legs and lungs, manifesting as swollen ankles and shortness of breath, is a common sign of progressing heart failure. Often, a slight increase in body weight is the first warning of fluid accumulation, occurring before noticeable swelling or breathing issues arise. Early identification of these fluid accumulation signs is critical for timely intervention, which can avert the necessity for hospital admittance. Patients are usually encouraged to monitor their weight, check for swelling in the ankles, observe their breathing, and consult with their healthcare provider or heart failure specialist at the first sign of these symptoms. In many cases, patients can report these symptoms in time for their healthcare team to adjust their treatment accordingly. Diuretics, or water pills, are often prescribed to help eliminate excess fluid, effectively preventing hospital admissions when used promptly.

Read more

The Heartfelt device may provide a useful solution for individuals who find it challenging to consistently monitor these indicators and their weight. It is designed to detect early warning signs seamlessly without imposing additional tasks on the patient's daily routine. The device, intended to complement rather than replace self-monitoring practices, is user-friendly and operates by scanning the feet for any size changes, positioned conveniently by the bedroom floor. This capability allows healthcare professionals to make informed decisions swiftly about patient care, potentially adjusting treatments to avoid further health complications. The device captures images of the feet only, ensuring privacy.

This study aims to ascertain the device's practical effectiveness in real-world scenarios, aiming to collect precise data to confirm its potential benefits for patients facing heart failure challenges.

Read the detailed description

This study has been co-designed with existing and past users (patients and their carers) of the Heartfelt device who have in the past expressed an interest in sharing their opinion for future research.

It is a 6 months crossover randomised controlled trial designed to evaluate the effectiveness of the Heartfelt device, a remote patient monitoring system, in reducing the risk of hospitalisation for heart failure (HF) by monitoring peripheral oedema.

We will focus on patients with heart failure who have had at least one hospitalisation for heart failure associated with peripheral oedema in the last year, with stratified randomisation (for the RCT part) to avoid recent discharge effects in the early phases of data collection and focussing on patients considered at high-risk of poor long-term adherence to daily weights (the majority of patients with heart failure). [8-Fitzgerald].

Conditions
Heart Failure
Being tested
Heartfelt Device installed, Standard care, Questionnaires, Heartfelt Device in pharmacy, Heartfelt device alerting system
Keywords
peripheral oedema, Heart failure decompensation, Heart failure hospitalisation
Medical subject headings
Heart Failure

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Heartfelt Device installedDevice

    Also called Remote patient monitoring device

    Device installed in the patient's home and capturing foot volume data which are processed in the cloud.

  • Standard careOther

    Also called Daily weighing, Breathlessness, Dizziness, Tiredness

    Patients with heart failure are advised to weigh daily and to report weight increase to their clinician. They should also report changes in breathlessness, tiredness and other symptoms associated with heart failure decompensation.

  • QuestionnairesOther

    Also called 5Q-5D, Bespoke Questionnaires

    Patients are presented with one or more optional questionnaires (some validated, some bespoke)

  • Heartfelt Device in pharmacyDevice

    Also called Monitoring device used in phamarcy

    Device used monthly in the pharmacy, with the assistance of the pharmacist, and capturing foot volume data which are processed in the cloud.

  • Heartfelt device alerting systemDevice

    Also called Remote patient monitoring device

    The Heartfelt device sends alerts to the patients directly (audio-visual alert on the device, and app alerts), carers and/or medical professionals.

Study groups in NCT06334822
Study groupRoleWhat they receive
Standard Care + Heartfelt deviceExperimentalIn addition to standard care activities, participants have the Heartfelt device at home. During this arm, the device sends alerts and measurement data to the patient, carers and clinicians.
Receives: Device: Heartfelt Device installed; Other: Standard care; Other: Questionnaires; Device: Heartfelt device alerting system
Standard care (control)Active comparatorIn addition to standard care activities, participants have the Heartfelt device at home. During this arm, data is captured without sending health alerts or measurement data to the patient, carers and clinicians.
Receives: Device: Heartfelt Device installed; Other: Standard care; Other: Questionnaires
Standard Care + Heartfelt device in pharmacyExperimentalParticipants will follow standard care advice, and have monthly measurements taken at the pharmacy using the Heartfelt device. The pharmacist will receive the measurements and alerts and be able to communicate this to the participant.
Receives: Other: Standard care; Other: Questionnaires; Device: Heartfelt Device in pharmacy; Device: Heartfelt device alerting system

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. All-Cause Mortality Rate.

    This measure tracks the total number of participant deaths due to any cause during the study period. It is an essential indicator of overall participant survival and general safety of the treatment under investigation. This data is collected and verified through clinical records.

    Measure: The number of all-cause deaths documented in clinical records.

    Unit of Measure: Count of deaths.

    Measured: Through study completion, an average of 6 months

  2. Device-Related Complication Rate.

    This measure captures the frequency of complications associated with the medical device used in the study. It includes any adverse events or malfunctions linked to the device, providing insight into its safety and performance.

    Measure: The incidence of complications related to the medical device in use, as specified in Sections 8.1.4 and 8.1.5 of the study protocol.

    Unit of Measure: Count of complication events.

    Measured: Through study completion, an average of 6 months

  3. Heart Failure Events Incidence.

    This metric quantifies the number of times participants have heart failure events. The criteria for what constitutes a heart failure event are based on the definition provided by Abraham WT in 2020, ensuring standardised and specific event classification.

    Measure: The frequency of hospital events specifically for heart failure, as defined by Abraham WT, 2020.

    Unit of Measure: Count of heart failure events.

    Measured: Through study completion, an average of 6 months

Secondary outcomes (16)
  1. Cause of Death

    This records the cause of death classified as related to heart failure (HF) or not, as defined in Abraham WT, 2020 .

    Measure: Cause of Death Unit of Measure: Date (YYYY-MM-DD)

    Measured: Through study completion, an average of 6 months

  2. Date of Death

    This records the date of death classified as related to heart failure (HF) or not, as defined in Abraham WT, 2020 .

    Measure: Date of Death Unit of Measure: Categorical

    Measured: Through study completion, an average of 6 months

  3. Hospital Admission Duration

    Description:

    This measures the length of hospital stays, noting the admission and discharge dates.

    Measure: Length of Stay Unit of Measure: Days

    Measured: Through study completion, an average of 6 months

  4. Cause of Hospitalization

    This identifies the primary reason for hospitalization. Measure: Cause Hospitalization Category Unit of Measure: Categorical.

    Measured: Through study completion, an average of 6 months

  5. Hospitalisation Admission Route

    This identifies the route of admission during hospitalization events, such as ICU, CCU, or ward admission.

    Measure: Admission Route Unit of Measure: Categorical (ICU, CCU, Ward)

    Measured: Through study completion, an average of 6 months

  6. Loss of Independence

    This assesses instances where a patient becomes unable to live at home, necessitating care in a facility.

    Measure: Change in Living Arrangements Unit of Measure: Binary (Independent, Dependent)

    Measured: Through study completion, an average of 6 months

  7. Scheduling of Care Events

    This differentiates between scheduled and unscheduled care events. Measure: Nature of Scheduling Unit of Measure: Categorical (Scheduled, Unscheduled)

    Measured: Through study completion, an average of 6 months

  8. Setting of Care Events

    This categorizes care events as either inpatient or outpatient. Measure: Care Setting Unit of Measure: Categorical (Inpatient, Outpatient)

    Measured: Through study completion, an average of 6 months

  9. Date of Changes in HF Medication Post-Discharge

    This tracks the date of any change in heart failure medications after the patient returns home, excluding changes made during ward stays.

    Measure: Medication Adjustment Date Unit of Measure: Date (YYYY-MM-DD)

    Measured: Through study completion, an average of 6 months

  10. Changes in dosage of HF Medication Post-Discharge

    This tracks the change(s) in dosage in heart failure medications after the patient returns home, excluding changes made during ward stays.

    Measure: Medication Adjustment Dosage Unit of Measure: % change from previous dosage.

    Measured: Through study completion, an average of 6 months

  11. Comparison of Data Availability (number of days with data in a month): Heartfelt Device vs. Existing Remote Monitoring Devices

    This measures the variance in data availability, encompassing both device-generated and contemporaneous self-reported data.

    Measure: Degree of Variance Unit of Measure: Number of days per month with physiological measurements taken.

    Measured: Through study completion, an average of 6 months

  12. Timestamp of Health Alerts Generated by the Heartfelt Device

    This measures the date and time of health alerts generated by the Heartfelt device.

    Measure:

    Timestamp of Health Alerts

    Unit of Measure:

    Date and time

    Measured: Through study completion, an average of 6 months

  13. Frequency of Health Alerts Generated by the Heartfelt Device

    This measures the number of health alerts generated by the Heartfelt device over a specified period.

    Measure:

    Number of Health Alerts Unit of Measure: Count

    Measured: Through study completion, an average of 6 months

  14. Foot volume

    This reports the foot volume reported by the Heartfelt device. Measure: Foot and lower leg volume Unit of Measure: mL

    Measured: Through study completion, an average of 6 months

  15. Weight

    This measures the patient's weight Measure: patient weight Unit of Measure: Kg

    Measured: Through study completion, an average of 6 months

  16. Peripheral oedema grading

    This reports the Peripheral oedema grading reported by the Heartfelt device. Measure: Peripheral oedema grading Heartfelt scale [0-None / 1-Mild (includes ankle, but no higher) / 2-Moderate (Above the ankle, up to and including the knee)/ 4-Severe (Above the knee)]

    Measured: Through study completion, an average of 6 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted28 Mar 2024
  2. Study start11 Jul 2024
  3. Primary completion30 Jul 2026 (estimated)
  4. Study completion31 Jan 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Crossover
Model description
This 6-month study involves up to 210 patients using the Heartfelt device at home. It is a crossover trial with a 21-day break between two 69-day periods to prevent overlap effects. Patients will either receive standard care or standard care plus Heartfelt alerts. The Heartfelt group is further divided into three 23-day sub-studies to test different alert systems. Another 60 patients will have monthly measurements taken at the pharmacy without being part of the main randomisation.
Masking
Single blind
Who is masked
Outcomes assessor
Enrolment
186 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06334822
Sponsor's protocol ID
HFT-2024-01
Acronym
HF-TRACK
Status last verified
Mar 2026
First submitted
21 Mar 2024
Last updated
16 Mar 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Abraham WT, Psotka MA, Fiuzat M, Filippatos G, Lindenfeld J, Mehran R, Ambardekar AV, Carson PE, Jacob R, Januzzi JL Jr, Konstam MA, Krucoff MW, Lewis EF, Piccini JP, Solomon SD, Stockbridge N, Teerlink JR, Unger EF, Zeitler EP, Anker SD, O'Connor CM. Standardized Definitions for Evaluation of Heart Failure Therapies: Scientific Expert Panel From the Heart Failure Collaboratory and Academic Research Consortium. JACC Heart Fail. 2020 Dec;8(12):961-972. doi: 10.1016/j.jchf.2020.10.002. Epub 2020 Nov 13.

    PubMed 33199251

Questions about this trial

What is this clinical trial studying?

A study testing Heartfelt Device installed, Questionnaires and Heartfelt Device in pharmacy in people with Heart Failure, run by Heartfelt Technologies at 11 sites in United Kingdom.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 9 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: under way, not looking for participants, as of the sponsor's last update on 16 Mar 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 11 sites in United Kingdom. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

All-Cause Mortality Rate. (time frame: Through study completion, an average of 6 months). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06334822, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 16 Mar 2026.

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