Hemodynamic Effect of Dexmedetomidine Versus Magnesium Sulphate as an Adjuvant to Lidocaine in Preemptive Peribulbar Block in Patients Undergoing Dacryocystorhinostomy Under General Anesthesia
Hemodynamic Effect of Dexmedetomidine Versus Magnesium Sulphate as an Adjuvant to Lidocaine in Preemptive Peribulbar Block in Patients Undergoing Dacryocystorhinostomy Under General Anesthesia: A Randomized Controlled Trial
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Dacryocystorhinostomy (DCR) is a delicate ophthalmic surgical procedure aimed at reestablishing the patency of the nasolacrimal duct in patients suffering from nasolacrimal duct obstruction (NLDO).
Magnesium is a non-competitive N-methyl-D-aspartate (NMDA) receptors antagonist, and it can decrease the excitatory post synaptic currents produced by activation of NMDA receptors and it inhibits voltage gated calcium channels.
Dexmedetomidine alpha-2 agonist, which stimulates both central and peripheral alpha-2 receptors which inhibits neuronal firing and inhibits release of C-fibers transmitters such as norepinephrine which inhibits nerve fiber action potential and explains the antinociceptive effects of dexmedetomidine.
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Hebatullah S Abdelhamid, MD
- Telefonnummer: 00201044512277
- E-mail: drhebasalah593@gmail.com
Studiesteder
-
-
-
Cairo, Egypten, 12613
- Rekruttering
- Cairo University
-
Kontakt:
- Hebatullah S Abdelhamid, MD
- Telefonnummer: 00201044512277
- E-mail: drhebasalah593@gmail.com
-
-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Beskrivelse
Inclusion Criteria:
- Age ≥ 18 years.
- Both sexes.
- American Society of Anesthesiologists (ASA) physical status I or II.
- Undergoing elective Dacryocystorhinostomy (DCR) surgery under general anesthesia.
Exclusion Criteria:
- Patients have local infection.
- Allergic reaction or complications of the local anaesthesia (LA).
- Coagulopathy defined as international normalized ratio (INR) > 1.5, platelet count < 100,000/mm³, or ongoing anticoagulant therapy not adequately discontinued.
- Uncontrolled systemic disease, defined as poorly controlled hypertension [systolic blood pressure (SBP) > 160 mmHg], uncontrolled diabetes mellitus (HbA1c > 8.5%), unstable ischemic heart disease, or decompensated hepatic or renal disease.
- Uncooperative patients.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Dobbelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Eksperimentel: Group A
Patients will receive 5 ml of lidocaine 2% + 50 µg dexmedetomidine, with a total volume of 7 ml.
|
Patients will receive 5 ml of lidocaine 2% + 50 µg dexmedetomidine, with a total volume of 7 ml.
|
|
Eksperimentel: Group B
Patients will receive 5 ml of lidocaine 2% + 100 mg magnesium sulphate 10%, with a total volume of 7 ml.
|
Patients will receive 5 ml of lidocaine 2% + 100 mg magnesium sulphate 10%, with a total volume of 7 ml.
|
|
Aktiv komparator: Group C
Patients will receive 7 ml of lidocaine 2% with no further additives.
|
Patients will receive 7 ml of lidocaine 2% with no further additives.
|
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Change in mean arterial blood pressure
Tidsramme: Till the end of surgery (Up to 2 hours)
|
The change in mean arterial blood pressure will be recorded at baseline, after induction of anesthesia, immediately before peribulbar block, after block administration, at skin incision, during osteotomy and lacrimal sac manipulation (oculocardiac reflexes-provoking steps), and every 5 minutes thereafter until the end of surgery.
|
Till the end of surgery (Up to 2 hours)
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Grad af patienttilfredshed
Tidsramme: 24 timer postoperativt
|
Graden af patienttilfredshed vil blive vurderet på en 5-punkts Likert-skala patienttilfredshed (1, ekstremt utilfreds; 2, utilfreds; 3, neutral; 4, tilfreds; 5, ekstremt tilfreds)
|
24 timer postoperativt
|
|
Heart rate
Tidsramme: Till the end of surgery (Up to 2 hours)
|
Heart rate will be recorded at baseline, after induction of anesthesia, immediately before peribulbar block, after block administration, at skin incision, during osteotomy and lacrimal sac manipulation (oculocardiac reflexes-provoking steps), and every 5 minutes thereafter until the end of surgery.
|
Till the end of surgery (Up to 2 hours)
|
|
Oxygen saturation
Tidsramme: Till the end of surgery (Up to 2 hours)
|
Oxygen saturation will be recorded at baseline, after induction of anesthesia, immediately before peribulbar block, after block administration, at skin incision, during osteotomy and lacrimal sac manipulation (oculocardiac reflexes-provoking steps), and every 5 minutes thereafter until the end of surgery.
|
Till the end of surgery (Up to 2 hours)
|
|
Degree of surgeon satisfaction
Tidsramme: 24 hours postoperatively
|
Degree of surgeon satisfaction will be assessed on a 5-point Likert scale patient satisfaction (1, extremely dissatisfied; 2, unsatisfied; 3, neutral; 4, satisfied; 5, extremely satisfied)
|
24 hours postoperatively
|
Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- MS-141-2026 (14-5-2026)
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
IPD-planbeskrivelse
IPD-delingstidsramme
IPD-delingsadgangskriterier
IPD-deling Understøttende informationstype
- STUDY_PROTOCOL
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
Studerer et amerikansk FDA-reguleret lægemiddelprodukt
Studerer et amerikansk FDA-reguleret enhedsprodukt
Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .