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Punto ottimale per il monitoraggio del ritmo cardiaco dopo l'ictus (STARGATE)

15 settembre 2026 aggiornato da: Luciano A. Sposato

Sperimentazione pilota STARGATE (Sweet spot for cardiac Rhythm monitoring After sTrokE): una sperimentazione controllata randomizzata di fattibilità pilota

The goal of this clinical trial is to compare the use of long-term vs. shorter-term heart monitoring to detect atrial fibrillation after stroke.

Patients will be implanted with a loop recorder and will have study follow-up at 3-, 6- an 12-months after implantation.

The investigators will evaluate 24 patients, between the 3 centers, in the same way the investigators plan to evaluate a larger number of participants (>1000) in a future study. This will allow us to learn if such a study is possible, identify potential implementation challenges, and develop strategies to overcome those difficulties.

Panoramica dello studio

Stato

Ritirato

Condizioni

Intervento / Trattamento

Descrizione dettagliata

Atrial fibrillation (AF) is the most common heart rhythm disorder. Its name comes from the fibrillation (i.e. quivering) of the two upper chambers (atria) of the heart instead of a coordinated contraction, causing a rapid, irregular heart rate. This irregular contraction is ineffective, leading to the development clots in the heart. These clots can travel through the bloodstream until they get stuck in a brain artery. Millions of brain cells that depend on the oxygen supplied by the blocked artery die within minutes. This is known as a stroke. Strong blood thinners known as anticoagulants can lower stroke risk by 64% in AF patients when the AF is detected on an electrocardiogram (ECG) or if it lasts more than 24h on a heart monitor. Therefore, doctors use cardiac monitors to record the heartbeats of stroke patients for up to 3 years. It was historically thought, but not proven, that if AF was found in stroke patients, using anticoagulants could prevent a second stroke. However, recent information suggests that using cardiac monitors in stroke patients increases AF detection and anticoagulants prescription without a reduction in the number of new strokes. The failure to prevent a second stroke is likely the consequence of cardiac monitors sometimes detecting very short-duration AFs, which may have a low risk of stroke. If AFs last only for a few minutes or hours, anticoagulants may not be needed.

Patients with a stroke and not know atrial fibrillation will be implanted with a loop recorder and randomized in two groups (disclosure arm and non-disclosure arm). Patients will have phone follow-up visits at 3, 6 and 12 months after implantation. A quality-of-life survey will be performed at the last study visit.

This study will assess if it is possible to organize a large clinical trial comparing the use of long-term vs. shorter-term heart monitoring. The investigators will evaluate 24 patients, between the 3 centers, in the same way, the investigators plan to evaluate a larger number of participants (>1000) in a future study. This will allow us to learn if such a study is possible, identify potential implementation challenges, and develop strategies to overcome those difficulties.

Tipo di studio

Interventistico

Fase

  • Non applicabile

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

18 anni e precedenti (Adulto, Adulto più anziano)

Accetta volontari sani

No

Sessi ammissibili allo studio

Tutto

Descrizione

Inclusion Criteria:

- Adult patients with cortical or subcortical, cryptogenic or non-cryptogenic acute ischemic stroke

Exclusion Criteria:

  • AF on 24-h inpatient or Holter monitoring
  • Atrial or ventricular thrombus
  • Other major-risk cardioembolic sources (e.g., mechanical valve)
  • Other indications (e.g., venous thromboembolism) or contraindications for OACs.

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Prevenzione
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione parallela
  • Mascheramento: Nessuno (etichetta aperta)

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Comparatore attivo: Disclosure

Group A (disclosure arm): patients and physicians will be informed about all AF episodes identified on ILR lasting for ≥6 minutes.

Patients will be implanted with a loop recorder. Patients will be given the choice of remove the loop recorder after the 12-months follow-up visit or at the end of its battery life (approximately 3 years)

A quality of life survey will be performed at the end of the follow-up period. The survey will be done over the phone or in person if the follow-up visit is in person.

Comparatore attivo: Non-Disclosure

Group B (non-disclosure arm): patients and physicians will be only informed about AF episodes identified on ILR lasting for ≥24h. This longer threshold is selected because of its association with increased risk of systemic embolism.

Patients will be implanted with a loop recorder. Patients will be given the choice of remove the loop recorder after the 12-months follow-up visit or at the end of its battery life (approximately 3 years)

A quality of life survey will be performed at the end of the follow-up period. The survey will be done over the phone or in person if the follow-up visit is in person.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Number of patients enrolled at in 6 months
Lasso di tempo: 6 months

Median and interquartile range recruitment rate. We will use this rate to estimate the number of sites and enrollment duration required for a larger RCT.

6 months

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Screened, declined and dropouts.
Lasso di tempo: 2 years
  1. proportion and 95% confidence intervals (95% CI) of stroke patients needed to screen per patient invited to participate
  2. proportion and 95% CI of patients declining participation
  3. proportion and 95% CI of dropouts at the end of follow-up.
2 years
Number of clinical endpoint events per diagnostic arm
Lasso di tempo: 2 years

The investigators will apply standard descriptive statistics to report the number of clinical endpoint events per diagnostic arm. The primary composite efficacy endpoint to be used in larger RCT is stroke recurrence (ischemic or hemorrhagic), systemic embolism, MACE (myocardial infarction and admission for decompensated AF or heart failure), and death. The primary safety endpoint will be major bleeding (ISTH definition).These data and results from prior studies will be used to estimate the final sample size and required number of sites for the larger RCT.

2 years
Quality of life survey analysis
Lasso di tempo: 2 years

The investigators will perform a qualitative and quantitative analysis of the results of the ILR-specific quality of life survey. The analysis will be reviewed by the team and PWLE. We will use this information to improve patients' experiences in a larger RCT

2 years
AF timing of diagnosis
Lasso di tempo: 2 years

The investigators will evaluate different measures of AF timing of diagnosis :Time to first AF diagnosis (DD:HH)

2 years
AF burden (1)
Lasso di tempo: 2 years

The investigators will evaluate different measures of AF burden:

Total AF burden at 3, 6, and 12 months post-ILR insertion (sum of the duration of all AF episodes, HH:MM:SS).

Characterizing these measures will allow us to choose the best AF burden definition for a larger RCT.

2 years
AF burden (2)
Lasso di tempo: 2 years

The investigators will evaluate different measures of AF burden:

Maximum duration of the longest AF episode. Characterizing these measures will allow us to choose the best AF burden definition for a larger RCT.

2 years
AF burden (3)
Lasso di tempo: 2 years

The investigators will evaluate different measures of AF burden:

Relative AF burden (total AF burden/net monitoring time), (4) AF Pattern (number of AF episodes and time of occurrence), (5) Other ECG monitoring findings (premature atrial complexes, interatrial block, etc.). Characterizing these measures will allow us to choose the best AF burden definition for a larger RCT.

2 years
AF burden (4)
Lasso di tempo: 2 years

The investigators will evaluate different measures of AF burden:

AF Pattern (number of AF episodes and time of occurrence). Characterizing these measures will allow us to choose the best AF burden definition for a larger RCT.

2 years
AF burden (5)
Lasso di tempo: 2 years

The investigators will evaluate different measures of AF burden:

Other ECG monitoring findings (premature atrial complexes, interatrial block, etc.). Characterizing these measures will allow us to choose the best AF burden definition for a larger RCT.

2 years

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Collaboratori

Investigatori

  • Investigatore principale: Luciano A Sposato, MD, MBA, LHSC - Western University

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Stimato)

1 novembre 2023

Completamento primario (Stimato)

1 ottobre 2024

Completamento dello studio (Stimato)

1 febbraio 2025

Date di iscrizione allo studio

Primo inviato

13 gennaio 2023

Primo inviato che soddisfa i criteri di controllo qualità

3 febbraio 2023

Primo Inserito (Effettivo)

8 febbraio 2023

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

18 settembre 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

15 settembre 2026

Ultimo verificato

1 settembre 2026

Maggiori informazioni

Termini relativi a questo studio

Altri numeri di identificazione dello studio

  • 122103

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .