Denne side blev automatisk oversat, og nøjagtigheden af ​​oversættelsen er ikke garanteret. Der henvises til engelsk version for en kildetekst.

Systematisk maskinlæringsalgoritme til detektion af hurtig trombose (DVT-SMART)

5. november 2026 opdateret af: Ostfold Hospital Trust

Evaluering af en ny diagnostisk strategi for mistanke

The goal of this clinical trial is to compare the use of a machine learning-based algorithm and point-of-care D-dimer to laboratory D-dimer and compression ultrasound to exclude deep vein thrombosis in the under extremities in patients referred to a medical department suspected of having deep vein thrombosis. The main aim is to answer are if a machine learning algorithm and point of care D-dimer can exclude deep vein thrombosis in more patients than clinical assessment and D-dimer alone.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

All participants will follow the usual diagnostic algorithm used for patients with suspected DVT referred to Ostfold Hospital (all patients are examined by a physician, D-dimer is analyzed in all patients, ultrasound is performed by a radiologist in patients with positive D-dimer). In addition to usual care, POC D-dimer, POC ultrasound (performed by ED physicians), blood sampling for biobanking, and photographies of the under extremities will be performed. The machine learning model will be tested to see if the prediction is correct. In participants where ultrasound is performed, it will also be assessed whether the machine learning algorithm could have excluded the participant without the use of ultrasound. None of the additional procedures will have any impact on the patient diagnostics or treatment.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

1000

Fase

  • Ikke anvendelig

Kontakter og lokationer

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

Studiekontakt

Undersøgelse Kontakt Backup

Studiesteder

      • Sarpsborg, Norge, 1714
        • Rekruttering
        • Østfold Hospital Trust
        • Kontakt:
        • Underforsker:
          • Hans J Myklebust-Hansen, M.D.

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

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Patients referred to the ED due to suspicion of DVT
  • Age ≥ 18 years
  • Able to give informed consent

Exclusion Criteria:

  • Ongoing use of anticoagulation for more than 72 hours
  • Previous participation in the study
  • Life expectancy of less than three months.

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: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: All participants

All participants will be treated the same way.

POC D-dimer will be compared to laboratory D-dimer in hospital setting and used in a machine learning model

Point of care (POC) ultrasound performed by ED physicians compared to ultrasound performed by radiologist. POC ultrasound 3 point examination performed by ED physician will be compared with POC ultrasound full leg examination performed by ED physician.

The DSS will be compared to the usual strategy. It will also be estimated how many participants where DVT could have been excluded without ultrasound.

Andre navne:
  • Beslutningsstøttesystem

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Safety of the new strategy (POC D-dimer, ML-based prediction model, POC CUS by emergency physician)
Tidsramme: From enrollment to the end of the primary assessment period (90 days)

Evaluate the safety of a new strategy consisting of POC D-dimer and an ML-based prediction model followed by CUS performed by emergency physicians by comparing the new strategy's safety with our standard care by measuring the proportion of patients in whom DVT is excluded according to the new strategy but was diagnosed with DVT by standard care or in whom DVT is diagnosed within the 90-day follow up.

From enrollment to the end of the primary assessment period (90 days)

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Evaluate the efficiency of the new strategy
Tidsramme: From enrollment to the end of the primary assessment period (90 days)

The proportion of patients in whom DVT can be ruled out by the ML-based prediction model with POC D-dimer compared to the efficiency of Wells score and laboratory D-dimer

From enrollment to the end of the primary assessment period (90 days)
Validate the safety and efficiency of the ML-based prediction model
Tidsramme: From enrollment to the end of the primary assessment period (90 days)

Safety will be determined by the proportion of patients in whom DVT is excluded by the ML-model but diagnosed by standard care. Efficiency will be determined by the proportion of patients in whom DVT can be excluded by the ML-based model

From enrollment to the end of the primary assessment period (90 days)
Evaluate concordance between CUS performed by emergency physicians and radiologists.
Tidsramme: From time of enrollment until time of ultrasound examination performed by radiologist, assessed up to 48 hours.

Determine the proportion of false negative and false positive diagnosis of DVT in emergency physician-performed ultrasound compared with ultrasound performed by radiologists.

From time of enrollment until time of ultrasound examination performed by radiologist, assessed up to 48 hours.
Evaluate concordance between POC D-dimers in an ED setting and laboratory D-dimers.
Tidsramme: From enrollment to the completion of D-dimer analysis, assessed up to 24 hours.

Compare the two POC D-dimers with the STA-Liatest D-dimer and Siemens INNOVANCE by direct comparison of the true/false positive/negative results.

From enrollment to the completion of D-dimer analysis, assessed up to 24 hours.
Evaluate the hypothetical time to be completed for the novel strategy compared to the standard strategy.
Tidsramme: From time of enrollment until time of discharge from the emergency department either discharged from the hospital or hospitalized, assessed up to 24 hours.

Estimating the total management time defined as time from ED registration to ED discharge in patients evaluated according to the new strategy compared to standard care.

From time of enrollment until time of discharge from the emergency department either discharged from the hospital or hospitalized, assessed up to 24 hours.
Evaluate the safety of a limited ultrasound protocol (two-point and proximal) compared to full-leg CUS performed by emergency physicians and radiologists
Tidsramme: 90 days after enrollment.

Estimating the proportion of patients in whom DVT was ruled out by the limited ultrasound protocol but was diagnosed with DVT by the whole-leg ultrasound.

90 days after enrollment.

Samarbejdspartnere og efterforskere

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

Sponsor

Samarbejdspartnere

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)

6. januar 2025

Primær færdiggørelse (Anslået)

5. april 2027

Studieafslutning (Anslået)

5. april 2029

Datoer for studieregistrering

Først indsendt

4. december 2024

Først indsendt, der opfyldte QC-kriterier

18. februar 2025

Først opslået (Faktiske)

24. februar 2025

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

10. november 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

5. november 2026

Sidst verificeret

1. november 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 682139

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

UBESLUTET

IPD-planbeskrivelse

The plan to share IPD with other researchers are not yet decided because it has not yet been discussed.

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

produkt fremstillet i og eksporteret fra U.S.A.

Ingen

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 .