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Administration af protrombinkomplekskoncentrat vs. standardtransfusion under/efter hjertetransplantation (OPSTAHT)

19. oktober 2026 opdateret af: University of Maryland, Baltimore

Optimeret administration af protrombinkomplekskoncentrat (PCC) vs. standardtransfusion under/efter hjertetransplantation - OPSTAHT

This study is comparing the use of Kcentra vs. standard transfusion in patients undergoing heart transplantation surgery. Half of the patients will receive Kcentra, while the other half will receive fresh frozen plasma.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

This study will be a randomized (1:1; PCC vs. plasma), open-label trial of hemostatic therapies during heart transplantation. The goal is to enroll 60 patients. Informed consent will be obtained from patients meeting the inclusion and exclusion criteria before the initiation of any study specific procedures. Eligible patients will be randomized to receive either PCC or plasma transfusion. The efficacy of interventions will be evaluated after 30 minutes of protamine administration. After the heart transplantation, thrombocytopenia and/or hypofibrinogenemia may worsen bleeding associated with vitamin K dependent factor deficiencies. Transfusion of platelets and/or cryoprecipitate is permitted if abnormal laboratory values are observed during the rewarming phase of CPB; platelet count <100 x 103/µl, and fibrinogen <200 mg/dl, respectively. Laboratory tests (hematocrit, platelet count, PT, PTT, POC-PT, coagulation factor and inhibitor levels (e.g., factor II, antithrombin), thromboelastometry or thromboelastography, endogenous thrombin generation) will also be obtained at baseline, twice during surgery and at 12-24 hours after surgery.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

14

Fase

  • Fase 3

Kontakter og lokationer

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

Studiesteder

    • Maryland
      • Baltimore, Maryland, Forenede Stater, 21201
        • University of Maryland
    • Pennsylvania
      • Pittsburgh, Pennsylvania, Forenede Stater, 15213
        • Upmc Presbyterian Montefiore Hospital
      • Pittsburgh, Pennsylvania, Forenede Stater, 15213
        • UPMC Presbyterian Shadyside

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:

  • Be willing and able to provide written informed consent.
  • Be at least 18 years of age.
  • Patients with or without ventricular assist device (VAD) undergoing heart transplantation
  • Patients who have been on warfarin for at least 72 hours before cardiopulmonary bypass procedures for heart transplantation.
  • International normalization ration (INR) greater than or equal to 1.5
  • Body temperature greater than 35.0 degrees Celsius.
  • Blood pH greater than 7.2
  • Hemoglobin greater than 7.0 mg/dL.

Exclusion Criteria:

  • Treatment with clopidogrel, prasugrel, or ticagrelor within 5 days prior to study surgery.
  • Known or suspected thrombophilia such as factor V Leiden, hereditary antithrombin III deficiency, heparin-induced thrombocytopenia, disseminated intravascular coagulation.
  • Ischemic or thromboembolic events within 6 weeks of study surgery.
  • Known allergy/anaphylaxis to prothrombin complex concentrate or albumin.
  • Any indication that a potential subject did not comprehend the study restrictions, procedures. or consequences therein an informed consent cannot be convincingly given.
  • Patients on respiratory support including extracorporeal membrane oxygenation (ECMO) .
  • Life expectancy less than 48 hours.
  • Excluded at the discretion of the surgeon based upon surgical safety precautions

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

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

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Kcentra (PCC)

Half of subjects enrolled will be randomized to the Kcentra (PCC) group.

Kcentra will be administered in 2 divided doses; Pre-bypass (5-10 units/kg based on body weight and preoperative INR and post-protamine based of the pre-bypass dose and the preoperative INR; daily maximum dose not to exceed 5000 IU (50 IU/kg)

Andre navne:
  • prothrombin kompleks koncentrat
Aktiv komparator: Frozen Plasma Product, Human

Half of subjects enrolled will be randomized to the standard transfusion group and receive fresh frozen plasma intra-operatively.

If the patient is randomized to receive standard transfusion they will receive 2 U of fresh frozen plasma intravenously before cardiopulmonary bypass and then up to 4-8 U of plasma added to the cardiopulmonary bypass reservoir during rewarming.

Andre navne:
  • Frisk frossen plasma

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Amount of Chest Tube Drainage
Tidsramme: From patient out of room time until 24 hours after

Primary outcome: Amount of chest tube output in the first 24 hours

From patient out of room time until 24 hours after

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Postoperative INR
Tidsramme: 30 Minutes post-treatment (after the last dose is completed)

INR value

30 Minutes post-treatment (after the last dose is completed)
INR Value Less Than 1.5
Tidsramme: 30min Post-Protamine

30 min after the administration of study drug (Kcentra or FFP)

30min Post-Protamine
Hemostatic Blood Products
Tidsramme: In OR (from OR entry to OR out of room time); postoperatively (patient out of room time) to 24 hours after; from 24 hours after until 30 days post surgery or until discharge (whichever comes first)

Total hemostatic blood product use, including plasma, platelets, and cryoprecipitate.

In OR (from OR entry to OR out of room time); postoperatively (patient out of room time) to 24 hours after; from 24 hours after until 30 days post surgery or until discharge (whichever comes first)
Red Blood Cell Use
Tidsramme: Intraoperatively(from start of first intervention until start of second intervention;after 2nd intervention(post-bypass)until patient out of room time) & Postoperatively(from patient out of room time until 24 hours after;24 hours after until 30 days)

Red Blood Cell Use Intraoperatively and Postoperatively

Intraoperatively(from start of first intervention until start of second intervention;after 2nd intervention(post-bypass)until patient out of room time) & Postoperatively(from patient out of room time until 24 hours after;24 hours after until 30 days)
Need for Circulatory Support
Tidsramme: 30 days post-operative or until discharge (whichever comes first)

Percentage of patients who needed circulatory support (ECMO or VAD)

30 days post-operative or until discharge (whichever comes first)
Mechanical Ventilation
Tidsramme: 30 days post-operative or until discharge (whichever comes first)

Percentage of patients who needed mechanical ventilation for more than 72 hours

30 days post-operative or until discharge (whichever comes first)
Tracheostomy
Tidsramme: 30 days post-operative or until discharge (whichever comes first)

Percentage of patients who needed a tracheostomy

30 days post-operative or until discharge (whichever comes first)
Renal Failure
Tidsramme: 30 days post-operative or until discharge (whichever comes first)

Percentage of patients who experience renal failure requiring dialysis

30 days post-operative or until discharge (whichever comes first)
Sepsis
Tidsramme: 30 days post-operative or until discharge (whichever comes first)

Percentage of patients who experienced sepsis infection morbidity consisted of sepsis syndrome, septic shock, or mediastinitis. In addition, the diagnosis of sepsis included organisms isolated from the cultures along with elevated temperature and white blood cell counts.

30 days post-operative or until discharge (whichever comes first)
Death
Tidsramme: 30 days post-operative or until discharge (whichever comes first)

Percentage of patients who died

30 days post-operative or until discharge (whichever comes first)
Stroke or Postoperative Neurological Dysfunction
Tidsramme: 30 days post-operative or until discharge (whichever comes first)

Percentage of patients who experienced a stroke or postoperative neurological dysfunction (seizures, delirium, unconsciousness, encephalopathy)

30 days post-operative or until discharge (whichever comes first)
Gastrointestinal Complication Requiring Bowel Resection
Tidsramme: 30 days post-operative or until discharge (whichever comes first)

Percentage of patients who experienced gastrointestinal complications requiring bowel resection

30 days post-operative or until discharge (whichever comes first)
Peripheral Vascular Complication
Tidsramme: 30 days post-operative or until discharge (whichever comes first)

Percentage of patients who experience peripheral vascular complications requiring surgery (thrombectomy, bypass, and amputations)

30 days post-operative or until discharge (whichever comes first)
Deep Vein Thrombosis and Pulmonary Thromboembolism
Tidsramme: 30 days post-operative or until discharge (whichever comes first)

Percentage of patients who develop a deep vein thrombosis and/ or pulmonary thromboembolism

30 days post-operative or until discharge (whichever comes first)
Plasma Coagulation Factor Levels
Tidsramme: At baseline, post-bypass/pre-protamine, 30 minutes post-protamine, 12-24 hours post treatment

Plasma coagulator factor levels will be analyzed via blood laboratory tests

At baseline, post-bypass/pre-protamine, 30 minutes post-protamine, 12-24 hours post treatment
Thrombin Generation Assay
Tidsramme: At baseline, post-bypass/pre-protamine, 30 minutes post-protamine, 12-24 hours post treatment

Thrombin Generation assay will be analyzed via blood laboratory tests

At baseline, post-bypass/pre-protamine, 30 minutes post-protamine, 12-24 hours post treatment
Surgical Re-exploration
Tidsramme: 30 days post-operative or until discharge (whichever comes first)

Surgical Re-Exploration that is related to heart transplant surgery

30 days post-operative or until discharge (whichever comes first)

Samarbejdspartnere og efterforskere

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

Sponsor

Samarbejdspartnere

Efterforskere

  • Ledende efterforsker: Kathirvel Surbramaniam, MD, University of Pittsburgh Medical Center
  • Ledende efterforsker: Kenichi Tanaka, MD, University of Maryland, Baltimore

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.

Generelle publikationer

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)

11. juli 2018

Primær færdiggørelse (Faktiske)

18. september 2020

Studieafslutning (Faktiske)

20. februar 2025

Datoer for studieregistrering

Først indsendt

28. august 2017

Først indsendt, der opfyldte QC-kriterier

9. november 2017

Først opslået (Faktiske)

14. november 2017

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

10. november 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

19. oktober 2026

Sidst verificeret

1. oktober 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • STUDY19020099

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ja

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

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

Ja

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