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Ekstern iskemisk kondisjonering for akutt iskemisk hjerneslag behandlet med mekanisk trombektomi (RECAST-MT) (RECAST-MT)

4. november 2026 oppdatert av: Ji Xunming,MD,PhD, Capital Medical University

Sikkerhet og effekt av fjern iskemisk kondisjonering for akutt iskemisk hjerneslag behandlet med mekanisk trombektomi (RECAST-MT): Et multisenter, randomisert, kontrollert, åpent, blindt endepunktsforsøk

For patients with acute ischemic stroke caused by large vessel occlusion, endovascular thrombectomy has been demonstrated to be the most effective therapy, as approximately 90% of the occluded vessels can be recanalized. However, less than 50% of patients could achieve functional independence, and over 15% died 90 days after stroke. Although the mismatch of successful recanalization with poor prognosis can be attributed to many factors, the infarct core formed during thrombectomy and reperfusion injury after thrombectomy may be among the most important and effective neuroprotective strategies urgently needed.

Remote ischemic conditioning (RIC) is a noninvasive strategy in which one or more cycles of brief and transient limb ischemia confer protection against prolonged and severe ischemia in distant organs. In the transient focal cerebral ischemia-reperfusion model, the application of remote ischemic conditioning before reperfusion or both before and after reperfusion reduces reperfusion injuries and the final infarct size. Because patients with acute ischemic stroke who are treated with endovascular thrombectomy can achieve a high rate of recanalization after focal ischemia, this patient population is akin to the model of transient focal cerebral ischemia-reperfusion. Furthermore, a pilot study has determined the safety and feasibility of remote ischemic conditioning in patients undergoing endovascular thrombectomy. However, whether remote ischemic conditioning could provide clinical benefits to patients with acute ischemic stroke who are treated with endovascular thrombectomy urgently needs investigations.

This study aims to investigate the safety and efficacy of remote ischemic conditioning in improving functional outcomes of patients with acute ischemic stroke treated with endovascular thrombectomy and explore the effect of treatment duration on the treatment outcome of remote ischemic conditioning.

Studieoversikt

Studietype

Intervensjonell

Registrering (Antatt)

2105

Fase

  • Fase 3

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiekontakt

  • Navn: Xunming Ji, MD, PhD
  • Telefonnummer: 010-8319-9439
  • E-post: jixm@ccmu.edu.cn

Studer Kontakt Backup

Studiesteder

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Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år og eldre (Voksen, Eldre voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

Beskrivelse

Inclusion Criteria:

  1. Age≥18 years;
  2. Acute ischemic stroke due to large vessel occlusion in the anterior circulation that is not suitable for intravenous thrombolytic therapy, or has contraindications to intravenous thrombolytic therapy, or treated with intravenous thrombolytic therapy without recanalization;
  3. Large vessel occlusion confirmed by computed tomography angiography (CTA) or magnetic resonance angiography (MRA), including the occlusion of the intracranial segment of the internal carotid artery (ICA) and M1 segment of the middle cerebral artery (MCA), is the cause of symptoms, and mechanical thrombectomy is planned within 24 hours from the time last known well;
  4. Baseline score of the National Institutes of Health Stroke Scale (NIHSS) ≥ 6 points;
  5. Patients or family members signed a written informed consent form.

Exclusion Criteria:

  1. Imaging examination revealed the presence of multiple vascular supply areas of cerebral infarction (such as the simultaneous presence of infarction in both anterior and posterior circulation);
  2. Absence of femoral artery pulsation, extremely difficult intravascular access, or extremely tortuous large vessels, which are expected to result in the inability to undergo timely endovascular treatment;
  3. Difficult-to-control hypertension: continuous monitoring upon admission shows systolic blood pressure ≥180mmHg, or diastolic blood pressure ≥100mmHg;
  4. Coma or lethargy patients (consciousness level score ≥2 in NIHSS);
  5. Unable to obtain an accurate baseline NIHSS score;
  6. Pre-stroke modified Rankin Scale (mRS) score >1;
  7. Baseline ASPECTS score ≤5;
  8. Presence of bleeding tendency, deficiency of coagulation factors, or oral anticoagulant therapy with INR > 3.0;
  9. Baseline blood glucose <2.7mmol/L or >22.2mmol/L;
  10. Baseline platelet count < 30*10^9/L;
  11. Severe known renal impairment defined as requiring dialysis (hemodialysis or peritoneal dialysis), or if known creatinine clearance rate <30mL/min;
  12. Cranial CT or MRI shows intracranial hemorrhage;
  13. Cranial CT or MRI shows midline deviation and significant occupying effect;
  14. Clinical history, previous imaging examinations, or clinical judgment suggesting intracranial tumors, arteriovenous malformations, or intracranial arterial dissection;
  15. History of head injury in the past 3 months;
  16. History of life-threatening allergy to contrast agents, nickel, titanium metal, or their alloys;
  17. Pregnancy, if women of childbearing age have a positive urinary or serum β-human chorionic gonadotropin (β-hCG) test or are breastfeeding;
  18. The life expectancy of patients is less than 6 months, and they cannot be evaluated within 3 months;
  19. Limb deformity, soft tissue injury, or other conditions that affect the implementation of distant ischemia adaptation therapy;
  20. Participating in other ongoing clinical trials;
  21. Other conditions that the investigators believe are not suitable for participation in this study.

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Enkelt

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Annen: Control group

Patients in the control group will receive endovascular thrombectomy and the best medical management according to the guidelines.

Endovascular thrombectomy procedures are performed according to the guidelines to recanalize the occluded large vessel safely.

Andre navn:
  • EVT

Best medical management is prescribed at the discretion of the treating physicians according to the guidelines.

Eksperimentell: 14-day treatment group

Patients in the 14-day treatment group will receive endovascular thrombectomy and the best medical management according to the guidelines. In addition, this group will receive remote ischemic conditioning once pre-thrombectomy and twice daily for 14 days post-thrombectomy.

Endovascular thrombectomy procedures are performed according to the guidelines to recanalize the occluded large vessel safely.

Andre navn:
  • EVT

Best medical management is prescribed at the discretion of the treating physicians according to the guidelines.

RIC is a noninvasive therapy performed by an electric auto-control device with a cuff placed on the upper arm. RIC procedures consist of five cycles of 5-min inflation (200 mmHg) and 5-min deflation of the cuff on the upper arm. The procedure will be performed once before endovascular thrombectomy and twice daily for 14 days post-thrombectomy.

Andre navn:
  • 14-dagers RIC
Eksperimentell: 30-day treatment group

Patients in the 30-day treatment group will receive endovascular thrombectomy and the best medical management according to the guidelines. In addition, this group will receive remote ischemic conditioning once pre-thrombectomy and twice daily for 30 days post-thrombectomy.

Endovascular thrombectomy procedures are performed according to the guidelines to recanalize the occluded large vessel safely.

Andre navn:
  • EVT

Best medical management is prescribed at the discretion of the treating physicians according to the guidelines.

RIC is a noninvasive therapy performed by an electric auto-control device with a cuff placed on the upper arm. RIC procedures consist of five cycles of 5-min inflation (200 mmHg) and 5-min deflation of the cuff on the upper arm. The procedure will be performed once before endovascular thrombectomy and twice daily for 30 days post-thrombectomy.

Andre navn:
  • 30-dagers RIC

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
The proportion of patients achieving a modified Rankin Scale (mRS) score of 0-2 at 90 days.
Tidsramme: 90 days after stroke.

The mRS ranges from 0 to 6, with higher scores indicating worse outcomes.

90 days after stroke.

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Two dichotomous mRS scores at 90 days (0-1 vs 2-6, 0-3 vs 4-6, 0-4 vs 5-6, 0-5 vs 6).
Tidsramme: 90 days after stroke.

The mRS ranges from 0 to 6, with higher scores indicating worse outcomes.

90 days after stroke.
The ordinal distribution of mRS scores at 90 days.
Tidsramme: 90 days after stroke.

The mRS ranges from 0 to 6, with higher scores indicating worse outcomes.

90 days after stroke.
The proportion of patients with early neurological improvement 24 hours after endovascular procedures.
Tidsramme: 24 hours after endovascular procedures.

The NIHSS ranges from 0 to 42, with higher scores indicating worse outcomes. Neurological improvement is defined as the NIHSS recovering to ≤2 points or decreasing by 8 points or much higher as compared with the baseline.

24 hours after endovascular procedures.
Changes in NIHSS score from baseline to day 14 or at discharge (whichever comes earlier).
Tidsramme: 14 days or at discharge (whichever comes first)

The NIHSS ranges from 0 to 42, with higher scores indicating worse outcomes.

14 days or at discharge (whichever comes first)
Score of EQ-5D-5L at 90 days.
Tidsramme: 90 days after stroke.

EQ-5D-5L is a tool used to assess health status, including five dimensions: mobility, self-care, usual activities, pain/discomfort, and anxiety/depression. A higher score indicates a better health status, while a lower score indicates a poorer health status.

90 days after stroke.
Cerebral infarct volume.
Tidsramme: 72 hours after endovascular procedures.

The infarction volume will be assessed on cranial CT or MRI imaging.

72 hours after endovascular procedures.
The change of infarct volume.
Tidsramme: 72 hours after endovascular procedures.

Infarct Expansion Ratio (IER, IER=infarct volume/baseline infarct volume). The infarction volume will be assessed on cranial CT or MRI imaging, and baseline infarct volume will be assessed on the CTP or baseline MRI imaging.

72 hours after endovascular procedures.
Incidence of intracranial hemorrhage.
Tidsramme: Within 14 days after endovascular procedures.

Intracranial hemorrhage is defined as the demonstration of hemorrhage within brain parenchyma on head imaging, according to the criteria of the ECASS III.

Within 14 days after endovascular procedures.
Incidence of Symptomatic Intracranial Hemorrhage
Tidsramme: Within 14 days after endovascular procedures.

Symptomatic intracranial hemorrhage is defined as the demonstration of hemorrhage within brain parenchyma on head imaging leading to an increase of at least 4 points in the NIHSS score, according to the criteria of the European Cooperative Acute Stroke Study III (ECASS III).

Within 14 days after endovascular procedures.
Incidence of neurological deterioration within 14 days.
Tidsramme: Within 14 days after endovascular procedures.

Neurological deterioration is defined as an increase of ≥4 points in NIHSS compared to before deterioration within 14 days.

Within 14 days after endovascular procedures.
Incidence of malignant infarction
Tidsramme: 0-90 days

Malignant infarction is defined as infarction involving more than half of the affected middle cerebral artery area, a significant mass effect requiring decompressive craniectomy, and/or directly leading to death with clinical signs of brain herniation.

0-90 days
All cause of death.
Tidsramme: 0-90 days

The incidence of death events at any time from randomization through day 90.

0-90 days
Incidence of Adverse Events/Serious Adverse Events
Tidsramme: 0-90 days

The incidence of other adverse events and serious adverse events at any time from randomization through day 90.

0-90 days

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Publikasjoner og nyttige lenker

Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

23. september 2024

Primær fullføring (Antatt)

1. november 2026

Studiet fullført (Antatt)

1. februar 2027

Datoer for studieregistrering

Først innsendt

4. august 2024

Først innsendt som oppfylte QC-kriteriene

16. august 2024

Først lagt ut (Faktiske)

19. august 2024

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

9. november 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

4. november 2026

Sist bekreftet

1. november 2026

Mer informasjon

Begreper knyttet til denne studien

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

UBESLUTTE

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .

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