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Hativ® elektrokardiogrammonitorering på patienter med mistanke om arytmi (HELP-A)

30. september 2026 opdateret af: Young Jun Park, Wonju Severance Christian Hospital

HELP-A is a prospective, randomized, open-label, multicenter comparative-effectiveness trial comparing two ambulatory electrocardiographic monitoring strategies in adults with palpitations or dizziness and a nondiagnostic 12-lead ECG. A total of 588 participants are randomized 1:1 to 30-day intermittent handheld 6-lead ECG monitoring (Hativ) or up to 7 days of continuous single-lead patch ECG monitoring (Memo Patch). The primary endpoint is clinically informative symptom-rhythm correlation established with the initially assigned device by the 1-month follow-up visit. Participants without a symptom-rhythm correlation who remain symptomatic may undergo optional sequential monitoring with the alternative device after primary endpoint ascertainment. Clinical outcomes, arrhythmia-directed interventions, healthcare resource utilization, costs, and adverse events are assessed through 3 months.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

HELP-A is an investigator-initiated, prospective, randomized, open-label, multicenter comparative-effectiveness trial conducted at four tertiary hospitals in South Korea. The study evaluates two ambulatory ECG monitoring strategies in adults with palpitations or dizziness that are not explained by a presenting 12-lead ECG and for whom additional ambulatory rhythm monitoring is clinically indicated.

Participants are randomized in a 1:1 ratio, stratified by participating center, to one of two monitoring strategies. Participants assigned to Hativ use a handheld ECG device that provides 10-second 6-lead ECG recordings. They are instructed to record at least twice daily and whenever symptoms occur for 30 days. Participants assigned to Memo Patch undergo continuous single-lead ECG monitoring for up to 7 consecutive days and report symptom onset using a mobile messaging chatbot or paper diary. For each reported symptom, a 20-minute ECG segment from 10 minutes before to 10 minutes after the reported onset is available for review.

The primary endpoint is clinically informative symptom-rhythm correlation established with the initially assigned device by the 1-month follow-up visit. A positive correlation requires an interpretable ECG obtained during a participant-confirmed typical symptomatic episode with a rhythm finding judged to be temporally and clinically concordant with that episode. A negative-only correlation requires at least one qualifying symptomatic episode with an interpretable ECG showing no concordant rhythm finding and no positive correlation by the 1-month visit. Both positive and negative-only correlations count as primary-endpoint success.

Because the assigned monitoring durations differ, a prespecified key secondary analysis re-ascertains the primary endpoint using only data from the first 7 days after randomization, representing the common planned 7-day monitoring window. Clinically significant arrhythmia is evaluated separately from symptom-rhythm correlation and is adjudicated centrally using prespecified device-specific operational definitions.

After completion of the 1-month primary endpoint assessment, participants with persistent symptoms and no clinically informative symptom-rhythm correlation may undergo optional sequential monitoring with the alternative device if further monitoring remains clinically appropriate and the participant agrees. Data obtained during sequential monitoring do not contribute to the primary randomized comparison and are analyzed as exploratory outcomes.

All randomized participants are followed through 3 months. Follow-up includes arrhythmia-directed therapeutic interventions, clinical events, healthcare resource utilization and costs, adverse events, and selected patient-reported outcomes.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

588

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

    • Dong-gu Jaebongro 42
      • Gwangju, Dong-gu Jaebongro 42, Sydkorea, 61469
        • Rekruttering
        • Chonnam National University Hospital
        • Kontakt:
    • Gangwon-do
      • Wŏnju, Gangwon-do, Sydkorea, 26426
    • Hwaseong-si Keunjaebong-gil 7
      • Gyeonggi-do, Hwaseong-si Keunjaebong-gil 7, Sydkorea, 18450
        • Rekruttering
        • Hallym University Dongtan Sacred Heart Hospital
        • Kontakt:
    • Seongbuk-gu, 73 Goryeodae-ro
      • Seoul, Seongbuk-gu, 73 Goryeodae-ro, Sydkorea, 02841
        • Rekruttering
        • Korea University Anam Hospital
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

19 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Age 19 years or older.
  • Palpitations or dizziness not explained by the presenting 12-lead ECG.
  • A clinical indication for additional ambulatory ECG monitoring.
  • Ownership of and ability to use a compatible smartphone.
  • Ability to provide written informed consent and comply with study procedures

Exclusion Criteria:

  • Physical disability or another condition that prevents appropriate use of the handheld ECG device.
  • Presence of a cardiac implantable electronic device or ventricular assist device.
  • Inability to read or understand the informed consent document.
  • Any other condition that, in the investigator's judgment, makes participation in the study inappropriate.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Diagnostisk
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Memo Patch continuous ECG strategy

Participants undergo continuous single-lead ECG monitoring with Memo Patch for up to 7 consecutive days and report symptom onset using a mobile messaging chatbot or paper diary.

Continuous single-lead ECG monitoring for up to 7 consecutive days. Participants report the onset of symptoms using a mobile messaging chatbot or paper diary. For each reported symptomatic episode, a 20-minute ECG segment extending from 10 minutes before to 10 minutes after the reported onset is available for review.

Aktiv komparator: Hativ handheld ECG strategy

Participants use Hativ for 30 days and perform 10-second 6-lead ECG recordings at least twice daily and whenever symptoms occur.

Handheld ECG monitoring using 10-second 6-lead recordings obtained at least twice daily and additionally whenever symptoms occur for 30 days. Recordings are transmitted through the companion smartphone application to a secure study server.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Clinically informative symptom-rhythm correlation with the initially assigned device by 1 month
Tidsramme: From randomization through the 1-month follow-up visit

Proportion of randomized participants with at least one participant-confirmed typical symptomatic episode documented with an interpretable ECG using the initially assigned device by the 1-month follow-up visit and before optional sequential monitoring. Primary-endpoint success comprises either a positive symptom-rhythm correlation or a negative-only symptom-rhythm correlation. A positive correlation is a qualifying symptomatic episode with an interpretable ECG showing a rhythm finding judged by central adjudication to be temporally and clinically concordant with that episode. A negative-only correlation requires at least one qualifying symptomatic episode with an interpretable ECG showing no concordant rhythm finding and no positive correlation by the 1-month visit.

From randomization through the 1-month follow-up visit

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Positive symptom-rhythm correlation
Tidsramme: By the 1-month follow-up visit

Proportion of participants with at least one qualifying participant-confirmed typical symptomatic episode documented with an interpretable ECG showing a rhythm finding judged by central adjudication to be temporally and clinically concordant with that episode.

By the 1-month follow-up visit
Negative-only symptom-rhythm correlation
Tidsramme: By the 1-month follow-up visit

Proportion of participants with at least one qualifying participant-confirmed typical symptomatic episode documented with an interpretable ECG showing no temporally and clinically concordant rhythm finding and with no positive correlation by the 1-month follow-up visit.

By the 1-month follow-up visit
Both positive and negative episodes
Tidsramme: By the 1-month follow-up visit

Proportion of participants with at least one qualifying positive symptom-rhythm correlation and at least one qualifying negative symptom-rhythm correlation. This measure is descriptive.

By the 1-month follow-up visit
Clinically significant arrhythmia detected during assigned-device monitoring
Tidsramme: By the 1-month follow-up visit

Proportion of participants with at least one centrally adjudicated clinically significant arrhythmia detected during initially assigned-device monitoring, irrespective of symptom association. Clinically significant arrhythmias are classified using prespecified device-specific operational definitions. Findings are additionally classified as symptom-associated or not temporally associated with a qualifying typical symptomatic episode.

By the 1-month follow-up visit
Arrhythmia-directed therapeutic intervention
Tidsramme: Through 3 months after randomization

Rate and timing of arrhythmia-directed therapeutic interventions, including medication, catheter ablation, or cardiac device implantation.

Through 3 months after randomization
Overall satisfaction
Tidsramme: 1-month follow-up visit

Overall satisfaction with the initially assigned device is assessed using the Study-Specific Overall Device Satisfaction Rating, a single-item, five-point ordinal scale in the 1-month participant questionnaire. Responses are scored as 1 = very dissatisfied, 2 = dissatisfied, 3 = neither satisfied nor dissatisfied, 4 = satisfied, and 5 = very satisfied. The minimum possible score is 1 and the maximum is 5, with higher scores indicating greater satisfaction, a more favorable outcome. The item is assessed separately from device-specific usability questions and willingness to recommend the device.

1-month follow-up visit
EQ-5D-5L
Tidsramme: Baseline to 1 month

Change in the EQ-5D-5L index score from enrollment to the 1-month follow-up visit.

Baseline to 1 month
Healthcare resource utilization and costs
Tidsramme: Through 3 months after randomization

Arrhythmia-related healthcare resource use through 3 months, including additional diagnostic tests, arrhythmia-related medications, emergency department visits, and hospitalizations. Costs are derived from institutional billing records at participating centers and expressed in Korean won. The base-case analysis excludes acquisition cost of the study devices because the devices were supplied in kind.

Through 3 months after randomization
Number and Percentage of Participants With Device-Related Adverse Events or Serious Adverse Events
Tidsramme: Through 3 months after randomization

Number and percentage of participants who experience at least one device-related adverse event or at least one serious adverse event through 3 months after randomization. Expected device-related adverse events include skin irritation or contact dermatitis associated with the adhesive patch and discomfort associated with device use. Serious adverse events are included regardless of their relationship to the study device. Each participant is counted once for this outcome, irrespective of the number of qualifying events experienced

Through 3 months after randomization

Andre resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Sequential-monitoring participant questionnaire
Tidsramme: 3-month follow-up

Among participants who undergo optional sequential monitoring with both study devices, paired evaluations are collected using the Study-Specific Three-Month Head-to-Head Device Evaluation Questionnaire.

Device usability is assessed separately for each device using eight items. Each item is scored from 1 (very difficult) to 5 (very easy), with 2 = difficult, 3 = neither difficult nor easy, and 4 = easy. The minimum possible score for each item is 1 and the maximum is 5; higher scores indicate better perceived usability. "Not applicable" responses are recorded separately and are not assigned a numerical score. Usability items are reported individually rather than combined into a total score.

Overall satisfaction with each device is assessed using a single five-point ordinal item, scored from 1 (very dissatisfied) to 5 (very satisfied), with 2 = dissatisfied, 3 = neither satisfied nor dissatisfied, and 4 = satisfied. The minimum possible score is 1 and the maximum is 5; higher scores i

3-month follow-up

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Ledende efterforsker: Young Jun Park, MD, Wonju Severance Christian Hopsital

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

22. februar 2024

Primær færdiggørelse (Anslået)

30. juni 2027

Studieafslutning (Anslået)

30. juni 2027

Datoer for studieregistrering

Først indsendt

31. januar 2024

Først indsendt, der opfyldte QC-kriterier

7. februar 2024

Først opslået (Faktiske)

9. februar 2024

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

5. oktober 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

30. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • CR223024

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

JA

IPD-planbeskrivelse

De-identified individual participant data underlying the primary publication, together with a data dictionary, will be available from the corresponding investigator on reasonable request after completion of the study and publication of the primary results, subject to ethics approval and execution of an appropriate data-use agreement.

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .