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

28. juni 2026 oppdatert av: 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.

Studieoversikt

Status

Fullført

Forhold

Intervensjon / Behandling

Detaljert 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.

Studietype

Intervensjonell

Registrering (Faktiske)

225

Fase

  • Fase 4

Kontakter og plasseringer

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

Studiesteder

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

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

Tar imot friske 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

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: Firemannsrom

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: Intravenous lidocaine group
Participants received intraoperative intravenous lidocaine infusion in addition to standardized general anesthesia according to the study protocol.
Legemiddel: 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.
Legemiddel: Normal Saline Placebo Infusion
Intravenous isotonic saline administered using the same infusion schedule as the active treatment to maintain blinding.

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
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
Tiltaksbeskrivelse
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

Samarbeidspartnere og etterforskere

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

Sponsor

Hospital Universitario de Caracas

Etterforskere

  • Hovedetterforsker: JOSEPH A VERAZA, MD, sociedad medica joseph veraza

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)

1. februar 2024

Primær fullføring (Faktiske)

1. januar 2025

Studiet fullført (Faktiske)

1. januar 2025

Datoer for studieregistrering

Først innsendt

14. juni 2026

Først innsendt som oppfylte QC-kriteriene

28. juni 2026

Først lagt ut (Faktiske)

1. juli 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

1. juli 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

28. juni 2026

Sist bekreftet

1. juni 2026

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • HUC-LIDO-APP-2024-001

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

NEI

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.

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .

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