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Intra-Articular Adrenaline Versus Tourniquet in Knee Arthroscopy: A Cohort Study

4. september 2026 opdateret af: Rohit Shrestha, Kathmandu University School of Medical Sciences

Intra-Articular Adrenaline Versus Tourniquet in Knee Arthroscopy in a Tertiary Care Center: A Prospective Cohort Study

Arthroscopy has become one of the most commonly performed orthopaedic surgeries in the world due to it being a minimally invasive technique. Clear visualization is crucial for both safe and efficient arthroscopic procedures. Pneumatic tourniquet has been widely used in knee arthroscopic surgeries to obtain bloodless surgical field, improve visualization, and thereby surgical time. However, complications from tourniquet use are not uncommon, particularly in patients whose procedure takes longer than 60 minutes. Using a tourniquet could increase problems, such as electromyographic alterations, nerve compressions, arterial occlusions, delayed muscle recovery, and muscle weakness.

Intra-articular adrenaline injection creates a bloodless field by reducing local perfusion through its vasoconstrictive properties, mimicking the effect of a tourniquet. It appeared to be a potentially effective and safe option. Therefore, this study aimed to evaluate intra-articular adrenaline infiltration as an alternative for achieving a bloodless field without tourniquet-related side effects, in terms of clinical efficacy, operative duration and safety. We would compare intra operative visibility and safety of intra articular adrenaline (1:200,000) injections with use of a tourniquet in arthroscopic knee surgeries. Comparision is made between one group that received standard tourniquet application and another group that received intra articular adrenaline injection. Then the intraoperative visibility in these two groups is compared using tools like surgeon visual analogue score and amount of irrigation fluid required. The effectiveness and safety of the method used is compared using appropriate statistical tools.

Null Hypothesis: There is no difference in intraoperative visibility and safety during knee arthroscopic surgeries with standard tourniquet application versus intraarticular adrenaline injection.

H0: outcome in Adrenaline group =< outcome in Tourniquet group

Alternative Hypothesis: Intra articular adrenaline injection is better than tourniquet use in arthroscopic knee surgeries with respect to operative field visibility and safety.

H1: outcome in Adrenaline group > or (not less than) outcome in Tourniquet group

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

169

Fase

  • Ikke anvendelig

Kontakter og lokationer

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Studiesteder

    • Bagmati
      • Dhulikhel, Bagmati, Nepal, 45200
        • Dhulikhel Hospital, Kathmandu University Hospital

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

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Ingen

Beskrivelse

Inclusion Criteria:

- Patients who are skeletally matured (18 year and above) undergoing knee arthroscopic surgeries.

The surgeries included are:

  • Anterior Cruciate Ligament reconstruction
  • Anterior Cruciate Ligament repair
  • Anterior Cruciate Ligament decompression
  • Meniscus repair surgeries
  • Meniscus resection surgeries - Patients who provide consent for the study

Exclusion Criteria:

  • The patient with following procedures are excluded:

    • Posterior Cruciate Ligament (PCL) surgeries
    • Multi-ligament surgeries
    • Osteochondral or intra articular fractures
  • Patients under 18 years of age
  • Patients who do not provide 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: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Enkelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Adrenaline Administration
Both groups will be injected at portal and intra-articular with an injection solution (Group A will be infiltrated with 60 ml of normal saline only and Group B will be injected with 60 ml of 1:200,000 adrenaline diluted in 100 ml of normal saline)
Aktiv komparator: Tourniquet Administration
The tourniquet in all groups are applied over proximal thigh with well-padded cotton and inflated (only in Group A - Tourniquet Administration Group's) to 100 -150mm of Hg higher than systolic pressure of the patient. Other group - Group B, have no inflation of tourniquet, but only applied.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Intraoperative Visibility Assessed by Surgeon Visual Analogue Scale (VAS)
Tidsramme: 1.5 years
Intraoperative visibility during arthroscopic knee surgery will be assessed by the operating surgeon using a 10-point Visual Analogue Scale (VAS), ranging from 0 to 10, where 0 indicates excellent visibility and 10 indicates extremely poor visibility. Lower scores indicate better operative visibility.
1.5 years
Intraoperative Irrigation Fluid Requirement
Tidsramme: 1.5 years
The total volume of irrigation fluid used during arthroscopic knee surgery will be recorded in milliliters (mL). Lower irrigation fluid requirement indicates better operative visibility and efficiency.
1.5 years

Samarbejdspartnere og efterforskere

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

Sponsor

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.

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)

1. januar 2023

Primær færdiggørelse (Faktiske)

30. juni 2024

Studieafslutning (Faktiske)

31. juli 2024

Datoer for studieregistrering

Først indsendt

4. september 2026

Først indsendt, der opfyldte QC-kriterier

4. september 2026

Først opslået (Faktiske)

10. september 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

10. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

4. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 31/24

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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