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Intraoperative Intravenous Lidocaine for Pain After Laparoscopic Appendectomy (LIDO-APP)

28. juni 2026 opdateret af: Joseph Alejandro Veraza Almeida, Hospital Universitario de Caracas

Intraoperative Intravenous Lidocaine Infusion for Postoperative Analgesia and Recovery After Laparoscopic Appendectomy: A Randomized, Double-blind, Placebo-controlled Trial

This randomized, double-blind, placebo-controlled clinical trial evaluated whether intraoperative intravenous lidocaine infusion improves postoperative analgesia and recovery in patients undergoing laparoscopic appendectomy. The primary objective was to assess postoperative pain intensity and opioid consumption. Secondary outcomes included postoperative nausea and vomiting, time to bowel function recovery, length of hospital stay, plasma lidocaine concentrations, and adverse events.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Postoperative pain following laparoscopic appendectomy remains an important clinical concern despite advances in multimodal analgesia. Intravenous lidocaine has been proposed as an effective adjunct because of its analgesic, anti-inflammatory, and antihyperalgesic properties, but evidence in laparoscopic appendectomy remains limited.

This prospective, randomized, double-blind, placebo-controlled trial compared continuous intraoperative intravenous lidocaine infusion with placebo in patients undergoing laparoscopic appendectomy under standardized general anesthesia. Patients were randomly allocated to receive either lidocaine or placebo according to the study protocol.

The primary outcome was postoperative pain intensity measured using the Visual Analogue Scale (VAS). Secondary outcomes included opioid requirements, postoperative nausea and vomiting, return of bowel function, length of hospital stay, incidence of adverse events, and perioperative plasma lidocaine concentrations measured at predefined intraoperative and postoperative time points.

The study aimed to determine the clinical efficacy and safety of intravenous lidocaine infusion as part of multimodal perioperative analgesia for laparoscopic appendectomy and to correlate analgesic effects with measured plasma lidocaine concentrations.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

225

Fase

  • Fase 4

Kontakter og lokationer

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

Studiesteder

  • Venezuela
    • Miranda
      • Caracas, Miranda, Venezuela, 1040
        • Hospital Universitario de Caracas

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

Tager imod sunde frivillige

Ja

Beskrivelse

Inclusion Criteria:

  • Adults aged 18 to 45 years.
  • ASA physical status I or II.
  • Scheduled for laparoscopic appendectomy under general anesthesia.
  • Able to provide written informed consent.

Exclusion Criteria:

  • History of cardiac conduction disorders or documented arrhythmias.
  • Hepatic insufficiency.
  • Renal insufficiency.
  • Chronic or long-term opioid therapy.
  • Known or suspected hypersensitivity to amide-type local anesthetics.
  • Hemodynamic instability at the time of admission to the operating room.
  • Body mass index greater than 35 kg/m².

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: Firedobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Intravenous lidocaine group
Participants received intraoperative intravenous lidocaine infusion in addition to standardized general anesthesia according to the study protocol.
Medicin: Lidocaine (drug)
Intravenous lidocaine administered as a bolus followed by continuous infusion during laparoscopic appendectomy according to the study protocol.
Placebo komparator: Placebo group
Participants received an equivalent volume of normal saline placebo under identical anesthetic conditions.
Medicin: Normal Saline Placebo Infusion
Intravenous isotonic saline administered using the same infusion schedule as the active treatment to maintain blinding.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Postoperative pain intensity
Tidsramme: At 0 (PACU admission), 4, 8, 12, and 24 hours after surgery.
Postoperative pain intensity assessed using the Visual Analogue Scale (VAS, 0-10), where 0 indicates no pain and 10 indicates the worst imaginable pain. Lower scores indicate better analgesic efficacy.
At 0 (PACU admission), 4, 8, 12, and 24 hours after surgery.

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Total opioid comsumption
Tidsramme: From surgery completion through 24 hours after surgery.
Total postoperative opioid requirement during the first 24 hours after surgery.
From surgery completion through 24 hours after surgery.
Post operative nausea and vomiting
Tidsramme: From surgery completion through 24 hours after surgery.
Incidence of postoperative nausea and vomiting requiring treatment
From surgery completion through 24 hours after surgery.
Time to return of bowel function
Tidsramme: From surgery completion to first flatus or bowel movement, assessed through 24 hours after surgery.
Time from surgery completion to first flatus or bowel movement.
From surgery completion to first flatus or bowel movement, assessed through 24 hours after surgery.
Lengh of hospital stay
Tidsramme: From surgery completion until hospital discharge (anticipated within 72 hours after surgery).
Time from surgery completion until hospital discharge.
From surgery completion until hospital discharge (anticipated within 72 hours after surgery).
Plasma lidocaine concentration
Tidsramme: From baseline through 1 hour after admission to the post-anesthesia care unit (PACU), with plasma lidocaine concentrations assessed at baseline, 30 minutes after study drug infusion initiation, 90 minutes after study drug infusion initiation, and 1 hour
Plasma lidocaine concentrations measured at predefined intraoperative and postoperative time points to evaluate systemic exposure and pharmacokinetic profile.
From baseline through 1 hour after admission to the post-anesthesia care unit (PACU), with plasma lidocaine concentrations assessed at baseline, 30 minutes after study drug infusion initiation, 90 minutes after study drug infusion initiation, and 1 hour

Samarbejdspartnere og efterforskere

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

Sponsor

Hospital Universitario de Caracas

Efterforskere

  • Ledende efterforsker: JOSEPH A VERAZA, MD, sociedad medica joseph veraza

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. februar 2024

Primær færdiggørelse (Faktiske)

1. januar 2025

Studieafslutning (Faktiske)

1. januar 2025

Datoer for studieregistrering

Først indsendt

14. juni 2026

Først indsendt, der opfyldte QC-kriterier

28. juni 2026

Først opslået (Faktiske)

1. juli 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

1. juli 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

28. juni 2026

Sidst verificeret

1. juni 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • HUC-LIDO-APP-2024-001

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

IPD-planbeskrivelse

Individual participant data (IPD) will not be publicly shared. De-identified data may be made available by the corresponding author upon reasonable request and subject to institutional and ethical approval.

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Kliniske forsøg med Postoperative smerter, akutte

Kliniske forsøg med Lidocaine (drug)

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