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Pulsatile Flushing Technique in Reducing Blockage of T-CVAD for Haemodialysis Patients (Non-RCT HD)

5. maj 2026 opdateret af: SUNG Ka Ming Dorothy, Queen Elizabeth Hospital, Hong Kong

Exploring the Effectiveness of Pulsatile Flushing Technique in Reducing Blockage of the Tunnelled Central Venous Access Device Among Haemodialysis Patients in Multiple Renal Centres in Hong Kong: A Cluster Non-Randomised Controlled Trial Study

This study investigates the effectiveness of pulsatile flushing techniques in reducing blockage in Tunnelled Central Venous Access Device (T-CVAD) among patients undergoing haemodialysis (HD) treatment at multiple renal centres within the Hospital Authority (HA) in Hong Kong. With limitation in single service protocol for each cluster of renal units, it is designed as a prospective, parallel, cluster non-randomised controlled trial involving 591 patients from 14 renal units. In order to identify the most effective flushing technique for T-CVAD maintenance, survival analysis on clinical effectiveness, in terms time-to-event blockage of the T-CVAD, among three trial arms: 1) Intervention Group A (IG-A) using pulsatile flushing technique with 0.4 second pause time interval; 2) Intervention Group B (IG-B) using pulsatile flushing technique with 1 second pause time interval; 3) Control Group (Con) using standard bolus flushing technique. The findings facilitate development of best practice for T-CVAD maintenance, optimise T-CVAD maintenance protocols, and ultimately improve patient outcomes. This groundbreaking study is expected to signify substantial progression in the nursing management of HD and T-CVAD.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

591

Fase

  • Ikke anvendelig

Kontakter og lokationer

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

Studiekontakt

  • Navn: SUNG Ka Ming Dorothy, KCC NC (Renal Care)
  • Telefonnummer: 6507 852-3506
  • E-mail: bskmd01@ha.org.hk

Studiesteder

  • Hong Kong
      • Kowloon, Hong Kong
        • Rekruttering
        • Queen Elizabeth Hospital
        • Kontakt:
          • Ka Ming Dorothy SUNG, KCC NC (Renal Care)
          • Telefonnummer: 6507 852-3506
          • E-mail: bskmd01@ha.org.hk
        • Ledende efterforsker:
          • Ka Ming Dorothy SUNG, KCC NC (Renal Care)
        • Underforsker:
          • Kai Cheong Harris LAM, HOCS M(N)/ CNO
        • Underforsker:
          • Suet Lai TAM, KWH NC (Renal Care)
        • Underforsker:
          • Ngar Yee CHOW, NTEC NC (Renal Care)
        • Underforsker:
          • Hau Sim Eva HO, HKEC NC (Renal Care)
        • Underforsker:
          • May Ki LAM, QMH NC (Renal Care)
        • Underforsker:
          • Lai Nga PO, NTWC NC (Renal Care)
        • Underforsker:
          • Shuk Hang LEE, KWC & PMH NC (Renal Care)
        • Underforsker:
          • Har Ping CHEUNG, TKOH APN (MED)
        • Underforsker:
          • Victor CHEUNG, QEH EOII (MDSSC)

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

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

  • Patients undergoing HD treatment with Tunnelled Central Venous Access Device (T-CVAD) in the above collaborators under the Hospital Authority
  • Able to understand spoken and written Chinese or English

Exclusion Criteria:

  • Patients with Non-Tunnelled Central Venous Access Device (NT-CVAD)
  • Temporary dysfunction (e.g., kicking of the catheter) resolved with repositioning
  • Confirmed case of fibrin sheath occlusion which can only be resolved through surgical intervention
  • Non-thrombotic occlusion due to mechanical causes (e.g., catheter malposition)
  • Patient declined or incompetent to provide written informed consent.

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Støttende pleje
  • Tildeling: Ikke-randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Intervention Group A
Use of pulsatile flushing technique (0.4s pause interval)
Enhed: Pulsatile Flushing Technique (0.4s pause interval)
Pulsatile flushing technique consists of multiple small boluses injected intermittently with 0.4-second pauses between each bolus resulting in unsteady turbulent flow, performed by a renal nurse who passed a formal train-the-trainer program on "pulsatile flushing technique" taught and assessed by designated nurse consultant (renal care).
Andre navne:
  • Catheter Care Simulation System
Eksperimentel: Intervention Group B
Use of pulsatile flushing technique (1s pause interval)
Andet: Pulsatile Flushing Technique (1s pause interval)
Pulsatile flushing technique consists of multiple small boluses injected intermittently with 1-second pauses between each bolus resulting in unsteady turbulent flow, performed by a renal nurse who passed a formal train-the-trainer program on "pulsatile flushing technique" taught and assessed by designated nurse consultant (renal care).
Andre navne:
  • Catheter Care Simulation System
Aktiv komparator: Control Group
Standard bolus flushing technique
Enhed: Bolus Flushing Technique
Bolus flushing technique involves the continuous administration of a single, concentrated volume of flush solution resulting in consistent laminar flow

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Time-to-event T-CVAD Blockage
Tidsramme: From the date of recruitment until the end of the study (at least 1-year follow-up) or date of termination (e.g., blockage, death, refusal to participate in the study… etc) whichever comes earlier, assessed up to 24 months.
as measured by time to the first occurrence of blockage of Tunnelled Central Venous Access Device (T-CVAD). T-CVAD blockage episodes can be transformed to incidence rates (in episodes per patient-year), or presented by Kaplan-Meier analysis with median blockage-free survival statistics stratified by three trial arms.
From the date of recruitment until the end of the study (at least 1-year follow-up) or date of termination (e.g., blockage, death, refusal to participate in the study… etc) whichever comes earlier, assessed up to 24 months.

Samarbejdspartnere og efterforskere

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

Sponsor

Queen Elizabeth Hospital, Hong Kong

Samarbejdspartnere

Prince of Wales Hospital, Shatin, Hong Kong
Queen Mary Hospital, Hong Kong
Tung Wah Hospital
Tuen Mun Hospital
Kwong Wah Hospital
Pamela Youde Nethersole Eastern Hospital
Princess Margaret Hospital, Hong Kong
Caritas Medical Centre, Hong Kong
North District Hospital, Hong Kong
Alice Ho Miu Ling Nethersole Hospital
Tseung Kwan O Hospital, Hong Kong
Yan Chai Hospital
Tin Shui Wai Hospital

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)

2. februar 2026

Primær færdiggørelse (Anslået)

1. december 2027

Studieafslutning (Anslået)

1. december 2027

Datoer for studieregistrering

Først indsendt

28. april 2026

Først indsendt, der opfyldte QC-kriterier

28. april 2026

Først opslået (Faktiske)

5. maj 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

11. maj 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

5. maj 2026

Sidst verificeret

1. april 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Andre undersøgelses-id-numre

  • CIRB-2025-277-1

Plan for individuelle deltagerdata (IPD)

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