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Nafamostat Efficacy and Safety in Critically Ill Patients(NICE)

18. februar 2013 oppdatert av: Seoul National University Hospital

Circuit Survival and Efficacy for Middle Molecular-weight Solute Elimination Between Nafamostat Infusion and Heparinized Saline Priming

Acute kidney injury (AKI) is a common and serious problem in critically ill patients, and is known to be an independent risk factor for mortality. Renal replacement therapy (RRT) is the mainstay of supportive treatment of patients with severe acute kidney injury. The goal of RRT is to achieve adequate correction of uremia, electrolyte abnormalities, and volume overload while ensuring good hemodynamic tolerance. The advantages of continuous renal replacement therapy (CRRT) are increased time-averaged dialysis dose, less hemodynamic instability, and possibly, removal of high molecular weight solutes, such as inflammatory cytokines. Solute removal can occur by several different mechanisms in CRRT. For relatively small solutes, the importance of diffusion and convection is emphasized, for solutes of larger molecular weight, the importance of convection and adsorption is emphasized. The ability of a specific CRRT to remove a certain solute is determined by membrane characteristics. But actual measurements of middle molecule clearance in large clinical trials have not been available in most trials.

During CRRT, blood is conducted through an extracorporeal circuit, circuit clotting is a major problem in daily practice of CRRT, increasing blood loss, workload, and costs. Early clotting is related to bioincompatibility, critical illness, vascular access, CRRT circuit, and modality. Therefore, one major intervention to influence circuit survival is anticoagulation. However, systemic anticoagulation, usually with heparin, can produce hemorrhagic complications in patients at high risk of bleeding. To minimize the risk of bleeding, a number of alternative regimens has been proposed, however, each of those methods has its own limitations and complication. Nafamostat mesilate, a serine proteinase inhibitor, while inhibiting various clotting factors in filter circuit, is characterized by short half life resulting in little systemic anticoagulation effect. A recently developed CRRT AN69ST membrane® (Gambro Inc) is coated with a polyethylene imine (PEI, cationic biopolymer) on the membrane surface. Once adsorbed onto the membrane, heparin keeps its anticoagulant properties. Therefore CRRT has been managed without systemic administration of heparin.

The investigators will conduct a multicenter prospective randomized controlled open-label trial which compares the difference in circuit survival between between nafamostat infusion and heparinized saline priming as anticoagulation for CRRT. The primary end-point of this study is circuit survival, the time of 1st membrane exchange. The secondary end-point is clearance of small molecule (urea) and middle molecule (β2 microglobulin) at 0, 1, 6, 24h, ACT(activated coagulation time) measurements after 1hr of the CRRT, Hemorrhagic complication. This is a noninferiority trial. The aim is to demonstrate that nafamostat infusion is not inferior to the heparinized saline priming. For this purpose, at least 80 subjects (a total of 160) would be required for each group if type I error rate is 5% and type II error is 20% given 20% of drop-out rate during the study period. Block randomization will be used by means of a dedicated website.

There are still conflicting data on the effective exchange time of circuit membrane. Our study may help to improve prognosis in patients with severe AKI.

Studieoversikt

Status

Ukjent

Forhold

Intervensjon / Behandling

Studietype

Intervensjonell

Registrering (Forventet)

160

Fase

  • Fase 3

Kontakter og plasseringer

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

Studiesteder

  • Korea, Republikken
      • Koyang, Korea, Republikken
        • Rekruttering
        • National Health Insurance Corporation Ilsan Hospital
        • Ta kontakt med:
      • Seongnam, Korea, Republikken
        • Rekruttering
        • Seoul National University Bundang Hospital
        • Ta kontakt med:
      • Seoul, Korea, Republikken
        • Rekruttering
        • Seoul National University Hospital
        • Ta kontakt med:
      • Seoul, Korea, Republikken
        • Rekruttering
        • Seoul National University Boramae Medical Center
        • Ta kontakt med:

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

20 år til 85 år (Voksen, Eldre voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

Beskrivelse

Inclusion Criteria:

  1. Injury stage of RIFLE criteria or more: > 2-fold increase in the serum creatinine or urine output < 0.5 mL/kg/hr for 12 hours
  2. Patients with any dialysis treatment before admission to the ICU or patients with end-stage renal failure and receiving dialysis
  3. Informed consent has been obtained.

Exclusion Criteria:

  1. patient age < 20 years or > 85 years
  2. life expectancy less than 3 months (ex. terminal stage of malignancy)
  3. Child-Pugh class C liver cirrhosis
  4. pregnancy or lactation
  5. history of anticoagulation prior to the randomization
  6. bleeding tendency (platelet count < 50,000/ul, INR > 2.5, PTT > 65, or fibrinogen < 1.00 g/L)
  7. history of hemorrhagic disease (ex. GI bleeding, cerebral hemorrhage, pulmonary hemorrhage)

Studieplan

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

Hvordan er studiet utformet?

Designdetaljer

  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Ingen (Open Label)

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: heparinized saline priming group
Experimental group : heparinized saline priming group
Legemiddel: heparinized saline priming group
Aktiv komparator: nafamostat infusion group after heparinized saline priming
active comparator : nafamostat infusion group after heparinized saline priming
Legemiddel: nafamostat infusion after heparinized saline priming

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
the time of 1st membrane exchange
Tidsramme: the time of 'filter is clotted'
the time of 'filter is clotted'
the time of 'filter is clotted'

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Clearance of small molecule (urea)
Tidsramme: 0, 1, 6, 24h
Clearance of small molecule (urea)
0, 1, 6, 24h
Clearance of middle molecule (β-2 microglobulin)
Tidsramme: 0, 1, 6, 24h
Clearance of middle molecule (β-2 microglobulin)
0, 1, 6, 24h
ACT(activated coagulation time) measurements after 1hr of the CRRT
Tidsramme: after 1hr of the CRRT
ACT(activated coagulation time) measurements after 1hr of the CRRT
after 1hr of the CRRT
Hemorrhagic complication
Tidsramme: during CRRT
Hemorrhagic complication
during CRRT

Samarbeidspartnere og etterforskere

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

Sponsor

Seoul National University Hospital

Samarbeidspartnere

SK Chemicals Co., Ltd.

Etterforskere

  • Studiestol: Dong Ki Kim, MD, PhD, Seoul National University Hospital

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.

Generelle publikasjoner

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

1. mars 2012

Primær fullføring (Forventet)

1. august 2013

Studiet fullført (Forventet)

1. august 2013

Datoer for studieregistrering

Først innsendt

2. desember 2011

Først innsendt som oppfylte QC-kriteriene

5. desember 2011

Først lagt ut (Anslag)

6. desember 2011

Oppdateringer av studieposter

Sist oppdatering lagt ut (Anslag)

20. februar 2013

Siste oppdatering sendt inn som oppfylte QC-kriteriene

18. februar 2013

Sist bekreftet

1. februar 2013

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • Nafamostat01

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