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Efficacy of Liposomal Bupivacaine for Transversus Abdominis Plane Block

11. mai 2026 oppdatert av: 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.

Studieoversikt

Status

Rekruttering

Forhold

Intervensjon / Behandling

Studietype

Intervensjonell

Registrering (Antatt)

86

Fase

  • Ikke aktuelt

Kontakter og plasseringer

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

Studiekontakt

Studer Kontakt Backup

Studiesteder

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

  • Voksen
  • Eldre voksen

Tar imot friske frivillige

Nei

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

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

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Dobbelt

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: Liposomal Bupivacaine Group
Patients in this group will receive transversus abdominis plane (TAP) block with liposomal bupivacaine after surgery.
Legemiddel: 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.
Legemiddel: Ropivacaine TAP blocks
Standard-dose ropivacaine administered via ultrasound-guided transversus abdominis plane (TAP) block after laparoscopic cholecystectomy.

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
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
Tiltaksbeskrivelse
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
Tiltaksbeskrivelse
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

Samarbeidspartnere og etterforskere

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

Sponsor

Tianjin First Central Hospital

Etterforskere

  • Studieleder: Wenli Yu, Tianjin First Central Hospital

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 (Faktiske)

10. mai 2026

Primær fullføring (Antatt)

1. juli 2026

Studiet fullført (Antatt)

1. august 2026

Datoer for studieregistrering

Først innsendt

21. april 2026

Først innsendt som oppfylte QC-kriteriene

4. mai 2026

Først lagt ut (Faktiske)

11. mai 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

14. mai 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

11. mai 2026

Sist bekreftet

1. mai 2026

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • KYAP2025-52

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (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.

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

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