Dexmedetomidine in Postoperative Analgesia
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Dexmedetomidine.
- Who it may be relevant to
- Registry conditions: Pain Management. Basic parameters: 18 years — 60 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Egypt
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Comparison Between Effect of Addition of Dexamethasone and Dexmedetomidine in Combination With Bupivacaine for Pain Relief After Shoulder Arthroscopic Surgeries
Overview
There is a high incidence reaching up to 45%; of severe intraoperative and postoperative pain associated with arthroscopic shoulder surgery, which is often significant enough to interfere with initial recovery and rehabilitation.Various peripheral nerve blocks have been used to reduce intraoperative anesthetic requirements to improve rapid recovery and reduce postoperative pain.
Detailed description
Recently, the Combined suprascapular nerve block and axillary nerve block (SSNB+ANB) was proposed to provide anesthesia and postoperative analgesia for shoulder surgery as a safe alternative to ISB.most of the nerve supply from C5 and C6 nerve roots are carried by suprascapular and the axillary nerves. These two peripheral nerves are responsible for the majority of the sensory innervation of the shoulder.
Dexamethasone is a glucocorticoid that is commonly used to decrease the body's inflammatory response. Doses of 1, 2, 4, and 8 mg have been used as an adjuvant in interscalene, supraclavicular, ankle, and brachial plexus blocks . However, when dexamethasone is used as an adjuvant in a PNB, the specific mechanism of action is unknown . Dexamethasone may produce extended analgesia through vasoconstriction and reduced absorption of local anesthetic or through "direct action on the nerve cell to reduce neural discharge" .
Despite having an unknown mechanism, a Cochrane review of 35 trials of 2702 participants determined that perineural dexamethasone adjuvant increased sensory block 6.7 hours (95% confidence interval) in comparison to a placebo . Similarly, intravenous dexamethasone increased sensory block 6.2 hours in comparison Dexmedetomidine is a highly selective and potent central alpha-2 adrenergic receptor agonist. Administration of this adjuvant in miscellaneous methods has received considerable attention in recent years. Due to its analgesic and sedative effects, besides the lack of any respiratory-sparing effects, administration of this adjuvant has been effective in reducing the need for opioids in the perioperative period and may even result in cooperative sedation . Given the sympatholytic effects of dexmedetomidine (hypotension and bradycardia), in addition to oversedation, especially when administered intravenously or at high doses, caution must be taken in administering this drug, especially in elderly patients.
The neuraxial administration of dexmedetomidine has nociceptive effects on somatic and visceral pains . It also reduces postoperative pain and prolongs analgesia, although there is a risk of bradycardia. Various doses of dexmedetomidine, along with a number of analgesic drugs, have been used in many studies. However, the exact dose of dexmedetomidine, as an adjuvant drug administered along with other intravenous drugs in the perioperative period, has been controversial.
The proposed mechanism for perineural dexmedetomidine in PNBs as first studied in rat models is similar to that of clonidine, which relies not on alpha-2 agonism mechanism, but instead blocks hyperpolarization-activated Ih cation currents and causes vasoconstriction for prolonged analgesia . Perineural dexmedetomidine adjunct use is off-label, and proper risk-benefit analysis, especially in patients where bradycardia and hypotension would be concerning, would be necessary before even more widespread use of dexmedetomidine in PNBs can be expected .
Interventions
- Drug Dexmedetomidine
Dexmedetomidine will be given with bupivaciane for postoperative pain control
Primary outcome measures
- numerical rating pain scale [Time frame: 24 hours]
Secondary outcome measures (1)
- complications [Time frame: 24 hours]
Eligibility criteria
Inclusion criteria
- Patients undergoing elective shoulder arthroscopy under general anesthesia
Exclusion criteria
- Contraindications to regional block (coagulopathy, infection at the needle insertion site, or diaphragmatic paralysis).
- Altered conscious level.
- Pregnancy. .Body mass index (BMI > 35).
- Patients who have difficulty understanding the study protocol
- Patients who have any known contraindication to study medications
- Patient refusal.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Allocation
- Randomized
- Model
- Parallel assignment
- Masking
- Triple blind
- Primary purpose
- Treatment
Study locations
Egypt · 1 center
- Assiut University Hospital — Asyut
Identifiers
NCT: NCT05705128 · Assiut anesthesia g35