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Effect of Transversus Abdominis Plane (TAP) Block Using Magnesium Sulfate Added to Dexamethasone on Quality of Recovery and Chronic Post Operative Pain Following Open Abdominal Cancer Surgery.

4 november 2026 uppdaterad av: Madona M.NOMAN, Assiut University

Effect of Magnesium Sulfate Added to Dexamethasone-Augmented Ultrasound-Guided Transversus Abdominis Plane (TAP) Block on Early Quality of Recovery and Chronic Post Operative Pain Following Open Abdominal Cancer Surgery: A Prospective Randomized Double-Blind Controlled Trial

This prospective, randomized, double-blind, controlled clinical trial is designed to evaluate whether adding magnesium sulfate to a dexamethasone-augmented, ultrasound-guided transversus abdominis plane (TAP) block improves early postoperative recovery and analgesia in adult patients undergoing open abdominal cancer surgery.

A total of 72 participants will be allocated into two groups. Both groups will receive a standard TAP block using bupivacaine and dexamethasone, while the intervention group will additionally receive magnesium sulfate.

The primary outcome of the study is the early quality of recovery assessed at 24 hours postoperatively. Secondary outcomes include postoperative pain scores, total opioid consumption, time to first rescue analgesia, the incidence of postoperative nausea and vomiting, patient satisfaction, block-related complications, intraoperative opioid requirements, hemodynamic parameters, and the incidence of chronic postoperative pain assessed through six months of follow-up.

Studieöversikt

Studietyp

Interventionell

Inskrivning (Beräknad)

72

Fas

  • Inte tillämpbar

Kontakter och platser

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Studiekontakt

Studera Kontakt Backup

Studieorter

      • Asyut, Egypten
        • South Egypt Cancer Institute, Assiut University, Egypt
        • 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

18 år till 70 år (Vuxen, Äldre vuxen)

Tar emot friska volontärer

Nej

Kön som är behöriga för studier

Allt

Beskrivning

Inclusion Criteria:

  • •Age 18-70 years.

    • ASA physical status I-III.
    • Scheduled for elective abdominal cancer surgery.
    • Able to understand the study protocol and complete the QoR-15 questionnaire. Provided written informed consent

Exclusion Criteria:

  • • Patient refusal.

    • Allergy to local anesthetics, dexamethasone, magnesium sulfate, or study medications.
    • Coagulopathy or anticoagulant therapy.
    • Local infection at the injection site.
    • Severe hepatic or renal impairment.
    • Neuromuscular disorders.
    • Chronic opioid use or chronic pain syndromes.
    • Pregnancy or lactation in females .
    • BMI >35 kg/m².
    • Cognitive impairment or inability to communicate effectively.

Studieplan

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

Hur är studien utformad?

Designdetaljer

  • Primärt syfte: Stödjande vård
  • Tilldelning: Randomiserad
  • Interventionsmodell: Parallellt uppdrag
  • Maskning: Fyrdubbla

Vapen och interventioner

Deltagargrupp / Arm
Intervention / Behandling
Aktiv komparator: Group D

Patients will receive bilateral ultrasound-guided TAP block using:20ml of 0.5% Bupivacaine 100mg mixed with 8mg dexamethasone (2ml) and diluted to 40ml with normal saline (18ml),20ml per side.

Patients will receive bilateral ultrasound-guided TAP block using:20ml of 0.5% Bupivacaine 100mg total volume 40ml ,20ml volume per side in both groups.

Dexamethasone 8 mg will be administered as an adjunct to TAP block in both groups

Experimentell: Group DM

Patients will receive bilateral ultrasound-guided TAP block using:20ml of 0.5% Bupivacaine 100mg mixed with 8mg dexamethasone (2ml),250mg magnesium sulfate (2.5ml) and diluted to 40ml with normal saline (15.5ml),20ml per side

Patients will receive bilateral ultrasound-guided TAP block using:20ml of 0.5% Bupivacaine 100mg total volume 40ml ,20ml volume per side in both groups.

Dexamethasone 8 mg will be administered as an adjunct to TAP block in both groups

Magnesium sulfate 250 mg will be administered as an adjunct to TAP block in DM group only

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Quality of Recovery-15 (QoR-15) score
Tidsram: 24 hours postoperatively

The Quality of Recovery-15 questionnaire will be used to assess the quality of postoperative recovery 24 hours after surgery, evaluating five dimensions: physical comfort, emotional state, psychological support, physical independence, and pain, resulting in a total score ranging from 0 to 150 (higher scores indicate better recovery).

24 hours postoperatively

Sekundära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Total Postoperative Opioid Consumption
Tidsram: During the first 24 hours postoperatively

Measuring the total morphine consumption required by the patient as rescue analgesia.

During the first 24 hours postoperatively
Time to First Request for Rescue Analgesia
Tidsram: Within the first 24 hours postoperatively

Recording the duration from the end of surgery until the patient first requests rescue analgesia (when Visual Analogue Scale (VAS)is 4 or more).

Within the first 24 hours postoperatively
Mean Arterial Pressure (MAP)
Tidsram: At baseline, after block, every 15 minutes intraoperatively, and at the end of surgery (extubation period).

Assessing Mean Arterial Pressure (MAP) values

At baseline, after block, every 15 minutes intraoperatively, and at the end of surgery (extubation period).
Chronic Postoperative Pain
Tidsram: Through 6 months postoperatively

Assessing the presence or absence of chronic postoperative pain and its intensity using the Visual Analogue Scale (VAS)ranging from 0 (no pain) to 10 (worst imaginable pain)minimum value of 0, maximum value of 10, where higher scores mean a worse outcome.

Through 6 months postoperatively
Postoperative Pain Intensity
Tidsram: At arrival to Post- Anesthesia Care Unit (PACU) (0 hour), 2, 4, 6, 12, and 24 hours postoperatively.]

Evaluating postoperative pain intensity using the Visual Analogue Scale (VAS) ranging from 0 (no pain) to 10 (worst imaginable pain).

At arrival to Post- Anesthesia Care Unit (PACU) (0 hour), 2, 4, 6, 12, and 24 hours postoperatively.]
Patient Satisfaction
Tidsram: At 24 hours postoperatively

Evaluating patient satisfaction with postoperative pain management using a 5-point Likert scale (ranging from very dissatisfied to very satisfied)(minimum value of 1, maximum value of 5, where higher scores mean a better outcome).

At 24 hours postoperatively
TAP Block-Related Complications and Adverse Effects
Tidsram: Intraoperatively and throughout the 24-hour postoperative period

Evaluating the overall incidence of any block-related complications or adverse events (including block failure, local anesthetic systemic toxicity, hematoma, infection, pneumothorax, nerve injury, or magnesium-related side effects), reported as the percentage of affected patients out of the total study population

Intraoperatively and throughout the 24-hour postoperative period
Intraoperative Fentanyl Requirements
Tidsram: Intraoperatively (during the surgical procedure)

Measuring the total intraoperative consumption of fentanyl.

Intraoperatively (during the surgical procedure)
Postoperative Nausea
Tidsram: During the first 24 hours postoperatively

Recording the incidence of postoperative nausea episodes

During the first 24 hours postoperatively
Postoperative Vomiting
Tidsram: During the first 24 hours postoperatively

Recording the incidence of postoperative vomiting episodes.

During the first 24 hours postoperatively
Heart rate
Tidsram: At baseline, after block, every 15 minutes intraoperatively, and at the end of surgery (extubation period)

Assessing heart rate values.

At baseline, after block, every 15 minutes intraoperatively, and at the end of surgery (extubation period)
Oxygen Saturation (SpO2)
Tidsram: At baseline, after block, every 15 minutes intraoperatively, and at the end of surgery (extubation period)

Assessing peripheral oxygen saturation levels.

At baseline, after block, every 15 minutes intraoperatively, and at the end of surgery (extubation period)

Samarbetspartners och utredare

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

Utredare

  • Huvudutredare: Madona M Noman, MD, Assiut 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 (Beräknad)

1 december 2026

Primärt slutförande (Beräknad)

1 december 2028

Avslutad studie (Beräknad)

1 december 2028

Studieregistreringsdatum

Först inskickad

4 november 2026

Först inskickad som uppfyllde QC-kriterierna

4 november 2026

Första postat (Faktisk)

10 november 2026

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

10 november 2026

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

4 november 2026

Senast verifierad

1 november 2026

Mer information

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