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Your journey
1What's a trial
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More info
You can access this
clinical trial
if you have
Adjuvants, Anesthesia
and you are
between 20 and 60
years old
This is an advanced phase trial assessing
the effectiveness of the new treatment before being released on the market.
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The purpose

Intravenous regional anesthesia (IVRA) is described firstly in 1908 by August Bier. It is simple, safe, reliable, less cost, efficient method in forearm surgery. The advantage of this method has fast return of motor and sensory function which enables patients for earlier discharge. However, this method has disadvantages such as tourniquet pain, insufficient muscle relaxation and postoperative analgesia. Lidocaine inhibits action potential propagation within neuronal tissue by binding to receptors in Na+ channels located on the nerve cell membrane. Lidocaine IVRA is safe and effective and is associated with a rapid onset (4.5 minutes) of anesthesia after injection and termination of analgesia (5.8 ± 0.5 minutes) once the tourniquet is deflated. Neostigmine is a typical cholinesterase inhibitor. It increases the level of acetylcholine (Ach) and indirectly stimulates both nicotinic and muscarinic receptors. In anesthesia, neostigmine is a drug that has been used for reversal of residual neuromuscular block. Administration of neostigmine by intrathecal and epidural routes has been found to cause analgesia by inhibition of the breakdown of Ach in the spinal cord. Dexamethasone is commonly used in anesthesia to prevent postoperative nausea and vomiting (PONV). Two recent meta-analyses have documented that dexamethasone also reduced postoperative pain and opioid requirement. Intravenous dexamethasone has also been shown to improve postoperative pain control in patients receiving spinal or epidural morphine. Hong et al reported that intravenous dexamethasone in combination with a caudal block with ropivacaine prolonged the duration of postoperative analgesia without adverse effects in children undergoing orchidopexy. So the investigators expect that addition of dexamethasone or neostigmine will affect duration and postoperative analgesia in bier block.

Provided treatments

  • Drug: Neostigmine
  • Drug: Dexamethasone

Locations near you

Unfortunately, there are no recruiting locations near you. Please check the list with all locations below.
Tris trial is registered with FDA with number: NCT03021772. The sponsor of the trial is Assiut University and it is looking for 60 volunteers for the current phase.
Official trial title:
Efficacy of Neostigmine Versus Dexamethasone as Adjuvants to Lidocaine During Intravenous Local Anesthesia for Forearm Orthopedic Surgeries