Safety and Efficacy of Dexamethasone Versus Dexmedetomidine as Adjuvants in PENG Block in Hip Surgeries for Postoperative Pain Management
Safety and Efficacy of Dexamethasone Versus Dexmedetomidine as Adjuvants in Pericapsular Nerve Group (PENG) Block in Hip Surgeries for Postoperative Pain Management
This study evaluates and compares the analgesic efficacy and safety of adding dexamethasone versus dexmedetomidine to bupivacaine in an ultrasound-guided pericapsular nerve group (PENG) block combined with a lateral femoral cutaneous nerve (LFCN) block in patients undergoing elective total hip replacement under spinal anesthesia.
Total hip replacement is associated with substantial acute postoperative pain. The PENG block targets sensory articular branches supplying the hip while preserving quadriceps muscle strength, facilitating early postoperative ambulation. Supplementation with an LFCN block expands sensory coverage to the lateral surgical incision. Adding perineural adjuvants, such as dexamethasone or dexmedetomidine, to local anesthetics may prolong sensory block duration and reduce opioid requirements.
A total of 90 adult participants aged 18 to 60 years will be randomly assigned to one of three equal groups (30 patients each):
- Group C (Control): Receives a PENG block with 20 mL of plain bupivacaine 0.25%.
- Group DX: Receives a PENG block with 20 mL of bupivacaine 0.25% combined with dexamethasone 4 mg.
- Group DM: Receives a PENG block with 20 mL of bupivacaine 0.25% combined with dexmedetomidine 1 µg/kg.
All participants across all groups will receive an LFCN block with 5 mL of plain bupivacaine 0.25% without adjuvants.
The primary outcome is the time to the first request for rescue analgesia (duration of postoperative analgesia). Secondary outcomes include total morphine consumption over the first 24 hours, pain intensity measured using the Visual Analogue Scale (VAS), intraoperative and postoperative hemodynamic stability, sedation levels, quality of recovery assessed at 24 hours via the Quality of Recovery-15 (QoR-15) questionnaire, and the incidence of any adverse effects or block-related complications.
Studieoversigt
Status
Betingelser
Intervention / Behandling
Undersøgelsestype
Tilmelding (Anslået)
Fase
- Fase 3
Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Patients aged 18 to 60 years.
- American Society of Anesthesiologists (ASA) physical status class I or II.
- Scheduled for elective unilateral total hip replacement under spinal anesthesia.
Exclusion Criteria:
- Patient refusal of the peripheral nerve block.
- Infection at the site of injection.
- Coagulopathy or contraindication to spinal anesthesia.
- Known allergy or hypersensitivity to any of the study medications.
- Baseline bradycardia or significant cardiac conduction abnormality.
- Chronic opioid use or pre-existing chronic pain on regular analgesics.
- Patients unable to communicate or reliably express pain scores.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Firedobbelt
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
|---|---|
|
Aktiv komparator: Group C (Control)
Participants receive an ultrasound-guided Pericapsular Nerve Group (PENG) block using 20 mL of plain bupivacaine 0.25% alone, followed by a lateral femoral cutaneous nerve (LFCN) block using 5 mL of plain bupivacaine 0.25% without adjuvant. |
Plain bupivacaine 0.25% (20 mL) administered perineurally via ultrasound-guided Pericapsular Nerve Group (PENG) block, along with plain bupivacaine 0.25% (5 mL) for Lateral Femoral Cutaneous Nerve (LFCN) block without adjuvant. |
|
Eksperimentel: Group DX (Dexamethasone)
Participants receive an ultrasound-guided Pericapsular Nerve Group (PENG) block using bupivacaine 0.25% with dexamethasone 4 mg added (total volume 20 mL), followed by an LFCN block using 5 mL of plain bupivacaine 0.25% without adjuvant. |
Plain bupivacaine 0.25% (20 mL) administered perineurally via ultrasound-guided Pericapsular Nerve Group (PENG) block, along with plain bupivacaine 0.25% (5 mL) for Lateral Femoral Cutaneous Nerve (LFCN) block without adjuvant. Perineural dexamethasone 4 mg combined with bupivacaine 0.25% to an identical total volume of 20 mL, administered via ultrasound-guided Pericapsular Nerve Group (PENG) block, along with plain bupivacaine 0.25% (5 mL) for LFCN block. |
|
Eksperimentel: Group DM (Dexmedetomidine)
Participants receive an ultrasound-guided Pericapsular Nerve Group (PENG) block using bupivacaine 0.25% with dexmedetomidine 1 µg/kg added (total volume 20 mL), followed by an LFCN block using 5 mL of plain bupivacaine 0.25% without adjuvant. |
Plain bupivacaine 0.25% (20 mL) administered perineurally via ultrasound-guided Pericapsular Nerve Group (PENG) block, along with plain bupivacaine 0.25% (5 mL) for Lateral Femoral Cutaneous Nerve (LFCN) block without adjuvant. Perineural dexmedetomidine 1 µg/kg combined with bupivacaine 0.25% to an identical total volume of 20 mL, administered via ultrasound-guided Pericapsular Nerve Group (PENG) block, along with plain bupivacaine 0.25% (5 mL) for LFCN block. |
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Time to First Request for Rescue Analgesia (Hours)
Tidsramme: Up to 24 hours postoperatively
|
Duration of postoperative analgesia in hours, measured from the completion of the nerve block to the patient's first request for rescue analgesia (intravenous morphine PCA triggered for VAS score of 3 or greater). If a patient does not request analgesia within the observation period, data will be censored at 24 hours. |
Up to 24 hours postoperatively
|
Samarbejdspartnere og efterforskere
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart (Anslået)
Primær færdiggørelse (Anslået)
Studieafslutning (Anslået)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
- Smerte
- Neurologiske manifestationer
- Postoperative komplikationer
- Patologiske processer
- Patologiske tilstande, tegn og symptomer
- Tegn og symptomer
- Smerter, postoperativ
- Heterocykliske forbindelser, 1-ring
- Heterocykliske forbindelser
- Azoler
- Polycykliske forbindelser
- Imidazoler
- Gravidier
- Graviditet
- Steroider
- SMUSED-RING-forbindelser
- Steroider, fluoreret
- Gravideretrioler
- Dexamethason
- Dexmedetomidin
Andre undersøgelses-id-numre
- Adjuvants in Hip PENG Block
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
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