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Efficacy of Liposomal Bupivacaine for Transversus Abdominis Plane Block

11. maj 2026 opdateret af: Lili Jia, Tianjin First Central Hospital

Liposomal Bupivacaine Versus Ropivacaine for Transversus Abdominis Plane Block in Laparoscopic Cholecystectomy: A Randomized, Single-Blind, Parallel-Group Trial

This is a single-center, randomized, single-blind, parallel-group clinical trial. The study aims to compare the analgesic efficacy of liposomal bupivacaine versus ropivacaine for transversus abdominis plane (TAP) block in patients undergoing laparoscopic cholecystectomy. Eligible participants will be randomly assigned to receive either liposomal bupivacaine or ropivacaine for TAP block during surgery. The primary outcome is the dynamic NRS pain score at 24 hours after surgery. Secondary outcomes include static and dynamic NRS pain scores at multiple time points, QoR-15 recovery quality, time to first rescue analgesia, analgesic consumption, gastrointestinal function recovery, length of hospital stay, and adverse events. Participants will be followed up to 3 months after surgery to evaluate the incidence of chronic post-surgical pain (CPSP). All participants will receive routine clinical care, and participation is voluntary.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

86

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

  • Kina
    • Tianjin Municipality
      • Tianjin, Tianjin Municipality, Kina, 300384
        • Rekruttering
        • Tianjin First Central Hospital
        • Kontakt:

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:

  • Age 18-65 years, either gender.
  • Patients scheduled for elective laparoscopic cholecystectomy.
  • ASA physical status I-III.
  • Able to provide written informed consent and complete the 3-month follow-up.

Exclusion Criteria:

  • History of allergy to local anesthetics.
  • History of dementia, psychosis, or other central nervous system diseases.
  • History of chronic pain or long-term use of opioids or other analgesics.
  • Contraindications to nerve block: infection at puncture site, severe coagulopathy.
  • Severe hepatic or renal dysfunction, pregnancy, or lactation.

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: Dobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Liposomal Bupivacaine Group
Patients in this group will receive transversus abdominis plane (TAP) block with liposomal bupivacaine after surgery.
Medicin: Liposomal Bupivacaine TAP block
Liposomal bupivacaine administered via ultrasound-guided transversus abdominis plane (TAP) block after laparoscopic cholecystectomy.
Aktiv komparator: Ropivacaine group
Patients in this group will receive transversus abdominis plane (TAP) block with Ropivacaine after surgery.
Medicin: Ropivacaine TAP blocks
Standard-dose ropivacaine administered via ultrasound-guided transversus abdominis plane (TAP) block after laparoscopic cholecystectomy.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Postoperative dynamic NRS pain score at 24 hours
Tidsramme: 24 hours after surgery
Postoperative pain intensity under dynamic conditions (e.g., coughing or deep breathing) will be assessed using the Numerical Rating Scale (NRS, 0-10, where 0 = no pain and 10 = worst imaginable pain).
24 hours after surgery

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Postoperative NRS pain scores at different time points
Tidsramme: 24, 48, and 72 hours after surgery
NRS scores at 24, 48, and 72 hours post-surgery while at rest; NRS scores at 48 and 72 hours while active
24, 48, and 72 hours after surgery
Postoperative recovery quality (QoR-15 scale)
Tidsramme: 24, 48, and 72 hours after surgery
Postoperative recovery quality will be evaluated using the 15-item Quality of Recovery (QoR-15) scale at 24 hours after surgery. The total score ranges from 0 to 150, with higher scores indicating better recovery quality.
24, 48, and 72 hours after surgery
Time to first rescue analgesia
Tidsramme: Up to 72 hours after surgery
The time from the end of surgery to the first request for rescue analgesia (e.g., opioid or non-opioid analgesics) will be recorded（background pain is excluded）.
Up to 72 hours after surgery
Total postoperative analgesic consumption within 72 hours
Tidsramme: 72 hours after surgery
Total amount of rescue analgesics (e.g., opioids, NSAIDs) used by each patient within 72 hours after surgery will be calculated and converted into equivalent doses.
72 hours after surgery
Gastrointestinal function recovery
Tidsramme: Postoperatively, through hospital discharge, up to 7 days after surgery
Time to first flatus and time to first defecation, measured from the end of surgery.
Postoperatively, through hospital discharge, up to 7 days after surgery
Postoperative length of hospital stay
Tidsramme: Postoperatively, through hospital discharge (up to 7 days)
The total number of days from surgery to hospital discharge will be recorded.
Postoperatively, through hospital discharge (up to 7 days)
Incidence of adverse events
Tidsramme: Postoperatively, through hospital discharge, and at follow-up (up to 7 days after surgery)
Adverse events including nausea, vomiting, dizziness, local anesthetic toxicity, and neurological complications will be recorded and compared between groups during hospitalization and follow-up.
Postoperatively, through hospital discharge, and at follow-up (up to 7 days after surgery)

Andre resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Incidence of chronic post-surgical pain (CPSP) at 3 months
Tidsramme: 3 months after surgery
The incidence of chronic post-surgical pain will be assessed via telephone follow-up.Incidence of chronic post-surgical pain (CPSP) , defined as persistent pain (NRS ≥ 1) at the surgical site lasting ≥ 3 months after laparoscopic cholecystectomy, excluding pain caused by other etiologies.
3 months after surgery

Samarbejdspartnere og efterforskere

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

Sponsor

Tianjin First Central Hospital

Efterforskere

  • Studieleder: Wenli Yu, Tianjin First Central Hospital

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)

10. maj 2026

Primær færdiggørelse (Anslået)

1. juli 2026

Studieafslutning (Anslået)

1. august 2026

Datoer for studieregistrering

Først indsendt

21. april 2026

Først indsendt, der opfyldte QC-kriterier

4. maj 2026

Først opslået (Faktiske)

11. maj 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

14. maj 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

11. maj 2026

Sidst verificeret

1. maj 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • KYAP2025-52

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

JA

IPD-planbeskrivelse

Individual participant data (IPD) will be made available upon reasonable request to the corresponding author, beginning 12 months after the publication of the primary results manuscript.

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Kliniske forsøg med Postoperativ smerte

Kliniske forsøg med Liposomal Bupivacaine TAP block

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