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Remimazolam för att minska postoperativ delirium hos äldre patienter som genomgår laparoskopisk gastrektomi

3 november 2026 uppdaterad av: Xiongxiong Pan, The First Affiliated Hospital with Nanjing Medical University

Effekten av Remimazolam på postoperativt delirium hos äldre patienter som genomgår laparoskopisk radikal gastrektomi: En prospektiv randomiserad kontrollerad studie

This prospective, single-center, randomized, participant- and outcome assessor-blinded, parallel-group controlled trial evaluated whether remimazolam-based anesthesia reduced postoperative delirium (POD) and improved peri-induction hemodynamic stability compared with propofol-midazolam-based anesthesia in patients aged 65 years or older undergoing elective laparoscopic radical gastrectomy for gastric cancer. A total of 147 participants were randomized in a 1:1 ratio. Standardized perioperative management, BIS-guided anesthetic depth control, and postoperative analgesia were applied in both groups. The primary outcome was the cumulative incidence of POD during postoperative days 1-3, assessed once daily using the 3D-CAM or CAM-ICU by trained outcome assessors blinded to treatment allocation. Secondary outcomes included post-induction hypotension, peri-induction hemodynamic variables, postoperative recovery, pain scores, and adverse events.

Studieöversikt

Status

Rekrytering

Betingelser

Intervention / Behandling

Detaljerad beskrivning

This prospective, single-center, randomized, participant- and outcome assessor-blinded, parallel-group controlled trial was conducted at the First Affiliated Hospital of Nanjing Medical University between January 21 and August 5, 2026. Patients aged 65 years or older who were scheduled to undergo elective laparoscopic radical gastrectomy for gastric cancer were screened for eligibility. A total of 147 participants were randomized in a 1:1 ratio to receive either remimazolam-based anesthesia or propofol-midazolam-based anesthesia. Randomization was based on a computer-generated sequence, with allocation concealed using sequentially numbered, opaque, sealed envelopes. Participants and postoperative outcome assessors were blinded to treatment allocation, whereas the attending anesthesiologists administering the allocated anesthetic regimen were not blinded.

Standardized perioperative monitoring and management were applied in both groups, including bispectral index-guided anesthetic depth control, opioid analgesia, neuromuscular blockade, controlled ventilation, vasoactive medication titration, and postoperative patient-controlled intravenous analgesia. Postoperative delirium was assessed once daily between 14:00 and 17:00 on postoperative days 1-3. Ward patients were assessed using the 3-Minute Diagnostic Interview for Confusion Assessment Method, whereas patients admitted to the intensive care unit were assessed using the Confusion Assessment Method for the Intensive Care Unit.

The original protocol specified standardized delirium assessment through postoperative day 5. Owing to limited research personnel during trial implementation, standardized assessments could only be consistently completed through postoperative day 3. Therefore, the primary outcome was the cumulative incidence of POD during postoperative days 1-3, and no assumptions were made regarding delirium status on postoperative days 4 and 5. Secondary outcomes included post-induction hypotension, maximum reduction in mean arterial pressure from baseline, peri-induction vasoactive drug requirements, peri-induction mean arterial pressure, heart rate and bispectral index trajectories, time to extubation, length of stay in the post-anesthesia care unit and hospital, postoperative pain scores, postoperative nausea and vomiting, PACU hypoxemia, emergence agitation, unplanned intensive care unit admission, and postoperative pulmonary infection.

Studietyp

Interventionell

Inskrivning (Beräknad)

170

Fas

  • Inte tillämpbar

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studiekontakt

Studera Kontakt Backup

Studieorter

  • Kina
    • Jiangsu
      • Nanjing, Jiangsu, Kina
        • Rekrytering
        • The First Affiliated Hospital of Nanjing Medical University
        • Kontakt:
        • Kontakt:

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

65 år till 100 år (Äldre vuxen)

Tar emot friska volontärer

Nej

Kön som är behöriga för studier

Allt

Beskrivning

Inclusion Criteria:

  • Age ≥ 65 years.
  • Body mass index (BMI) between 18 and 28 kg/m².
  • ASA physical status I-III.
  • Scheduled for elective laparoscopic radical gastrectomy under general anesthesia at Jiangsu Province Hospital.
  • Able and willing to sign informed consent.

Exclusion Criteria:

  • Severe respiratory, cardiovascular, renal, or hepatic dysfunction.
  • Stroke within the past 6 months or other central nervous system diseases.
  • History of schizophrenia, epilepsy, Parkinson's disease, myasthenia gravis, or other psychiatric disorders.
  • History of alcohol abuse or psychoactive substance dependence.
  • Severe visual, hearing, or language impairment preventing communication.
  • Allergy or contraindication to propofol or benzodiazepines.
  • Preoperative cognitive impairment assessed by MMSE (≤24 for ≥middle-school education; ≤20 for primary school; ≤17 for no formal education).
  • Participation in another drug clinical trial within 1 month before surgery.

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Primärt syfte: Förebyggande
  • Tilldelning: Randomiserad
  • Interventionsmodell: Parallellt uppdrag
  • Maskning: Dubbel

Vapen och interventioner

Deltagargrupp / Arm
Intervention / Behandling
Experimentell: Remimazolam Group

Participants in this group will receive remimazolam for anesthesia induction and maintenance during laparoscopic radical gastrectomy.
Läkemedel: Remimazolam

Remimazolam will be used as the primary anesthetic agent for induction and maintenance. Dosage will be adjusted to maintain BIS between 40 and 60.
Aktiv komparator: Propofol Group

Participants in this group will receive propofol for anesthesia induction and maintenance during laparoscopic radical gastrectomy.
Läkemedel: Propofol

Propofol will be used as the primary anesthetic agent for induction and maintenance. Dosage will be adjusted to maintain BIS between 40 and 60.

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
incidence of Postoperative Delirium
Tidsram: From postoperative Day 1 to Day 3

Postoperative delirium will be assessed using the 3D-CAM diagnostic tool by trained evaluators blinded to group assignment. Delirium will be identified based on the presence of acute onset/fluctuation, inattention, altered consciousness, or disorganized thinking, following the standard 3D-CAM algorithm.
From postoperative Day 1 to Day 3

Sekundära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Emergence Agitation
Tidsram: Immediately after extubation until PACU discharge

Emergence agitation will be assessed in the PACU using the RASS or agitation scale by blinded evaluators.
Immediately after extubation until PACU discharge
Time to extubation
Tidsram: At the end of surgery

Time from discontinuation of anesthetic agents to successful tracheal extubation.
At the end of surgery
Postoperative Pain Score
Tidsram: At PACU discharge; postoperative day 1,day 2,and day 3.

Pain itensity will be evaluated using the Numerical Rating Scale(NRS,0-10)
At PACU discharge; postoperative day 1,day 2,and day 3.
Post-induction Hypotension
Tidsram: From completion of anesthetic induction to 10 minutes after induction.

Post-induction hypotension will be defined as a decrease in mean arterial pressure (MAP) to <65 mmHg or a reduction of ≥30% from baseline within the first 10 minutes after anesthetic induction.
From completion of anesthetic induction to 10 minutes after induction.
Incidence of Postoperative Nausea and Vomiting
Tidsram: From surgery until 48 hours postoperatively

Postoperative nausea and vomiting assessed as the presence or absence based on patient reports and medical records during the postoperative period.
From surgery until 48 hours postoperatively
Length of Hospital Stay(days)
Tidsram: From the day of surgery (Day 0) to the date of hospital discharge (expected within 7-14 days postoperatively)

Length of hospital stay is defined as the number of calendar days from the date of surgery (Day 0) until the date of hospital discharge , as recorded in the electronic medical record system
From the day of surgery (Day 0) to the date of hospital discharge (expected within 7-14 days postoperatively)

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Sponsor

The First Affiliated Hospital with Nanjing Medical University

Publikationer och användbara länkar

Den som ansvarar för att lägga in information om studien tillhandahåller frivilligt dessa publikationer. Dessa kan handla om allt som har med studien att göra.

Allmänna publikationer

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Faktisk)

21 januari 2026

Primärt slutförande (Beräknad)

25 december 2026

Avslutad studie (Beräknad)

5 januari 2027

Studieregistreringsdatum

Först inskickad

14 december 2025

Först inskickad som uppfyllde QC-kriterierna

16 januari 2026

Första postat (Faktisk)

20 januari 2026

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

4 november 2026

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

3 november 2026

Senast verifierad

1 november 2026

Mer information

Termer relaterade till denna studie

Nyckelord

Ytterligare relevanta MeSH-villkor

Andra studie-ID-nummer

  • 2025-SR-1025

Plan för individuella deltagardata (IPD)

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Läkemedels- och apparatinformation, studiedokument

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