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Dexamethasone has an evidence-based indication in postoperative emesis prophylaxy and as a antiinflammatory steroid. Although the perineural administration is off-label, several studies recognised its analgetic action as an adjuvant for peripheral nerves blockade, permitting to reduce the concentration of the local anesthetics and extending the sensory and motor block.Questions remain concerning the mechanism of action, optimal dose, the lack/degree of toxicity and the comparison with intravenous administration.The aim of this prospective randomized controlled study is to investigate the efficacy of analgesia with 4 mg or 2 mg Dexamethasone added to a combination of ropivacaine 0,5% and lidocaine 1% in vertical infraclavicular blockade (VIB) anesthesia for upper limb surgery.
The investigators conducted a prospective randomized controlled study in 150 patients American Society of Anesthesiologists (ASA) score I-III scheduled for upper limb surgery , divided in 3 groups: group A received anesthesia VIB block with ropivacaine 0,5% 100 mg +lidocaine 1%+1 ml saline; group B received VIB block with ropivacaine 0,5% 100 mg +lidocaine 1% + 2 mg dexamethasone; group C received ropivacaine 0,5% 100 mg +lidocaine 1% + 4 mg dexamethasone.The anesthesiologist may use the ultrasound for visual guidance, but should also use the nerve stimulator in order to maintain the homogeneity of the procedure.
Intraoperative sedation was provided with intermittent bolus 10-20 mg IV Propofol. Postoperatively all patients received the same analgetic protocol when Visual Analog Pain Scale (VAS) over 3 with IV Perfalgan and Lornoxicam 8 mg/12 hours for 24 hours. If after 30 minutes VAS is still over 3, a loading dose of morphine 0,05 mg/kg should be administered. At first analgetic request, the nurse conducts an ice-probe test to both arms and will note the answer: same cold, slightly burn, burn, aching with the reason to test the potentially hyperalgesia effect related to ropivacaine. The data recorded are: time to first analgetic use, VAS at block regression, ice-probe test, motor and sensitive block duration, glycemic variations at 4 h, neurological complications immediately after block, total morphine consumption.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Group A | Placebo Comparator | VIB block with ropivacaine 0,5%100 mg+lidocaine1%100 mg+1 ml saline=21 ml. After the block regression, at the first analgetic request the patients received the analgesia protocol was started for 24 h with paracetamol 1 g IV every 8 h and lornoxicam 8 mg PO every 12 h; if VAS was still over 3 after 30 min, morphine was given as a loading bolus of 0.05 mg/kg IV supplemented with 2 mg IV every 5 minutes until VAS <3. After 2 h morphine was administered SC ½ of the total loading dose at request. |
|
| Group B | Active Comparator | VIB block with ropivacaine 0,5%100 mg+lidocaine1%100 mg+2 mg dexamethasone=21 ml. After the block regression, at the first analgetic request the patients received the analgesia protocol was started for 24 h with paracetamol 1 g IV every 8 h and lornoxicam 8 mg PO every 12 h; if VAS was still over 3 after 30 min, morphine was given as a loading bolus of 0.05 mg/kg IV supplemented with 2 mg IV every 5 minutes until VAS <3. After 2 h morphine was administered SC ½ of the total loading dose at request. |
|
| Group C | Active Comparator | VIB block with ropivacaine 0,5%100 mg+lidocaine1%100 mg+4 mg dexamethasone=21 ml. After the block regression, at the first analgetic request the patients received the analgesia protocol was started for 24 h with paracetamol 1 g IV every 8 h and lornoxicam 8 mg PO every 12 h; if VAS was still over 3 after 30 min, morphine was given as a loading bolus of 0.05 mg/kg IV supplemented with 2 mg IV every 5 minutes until VAS <3. After 2 h morphine was administered SC ½ of the total loading dose at request. |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Dexamethasone | Drug | One hour before surgery the patients received single shot VIB block with the mixture according to the group allocation |
|
| Measure | Description | Time Frame |
|---|---|---|
| Sensory block duration | The time in minutes measured between VIB block to first analgetic request | First 24 hours |
| Measure | Description | Time Frame |
|---|---|---|
| Motor block duration | The time in minutes measured between VIB block to complete movement of the hand | First 24 hours postoperatively |
| Glycemic variations at 4 hours post-VIB block | Determination of blood sugar level |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Ioan Cristian Stoica, MD Prof | Foisor Orthopedics Clinical Hospital | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Foisor Orthopedic Clinical Hospital | Bucharest | 021383 | Romania |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 3376761 | Result | Kalichman MW, Powell HC, Myers RR. Pathology of local anesthetic-induced nerve injury. Acta Neuropathol. 1988;75(6):583-9. doi: 10.1007/BF00686203. | |
| 3942334 | Result | Myers RR, Kalichman MW, Reisner LS, Powell HC. Neurotoxicity of local anesthetics: altered perineurial permeability, edema, and nerve fiber injury. Anesthesiology. 1986 Jan;64(1):29-35. |
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| ID | Term |
|---|---|
| D010149 | Pain, Postoperative |
| ID | Term |
|---|---|
| D011183 | Postoperative Complications |
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D010146 | Pain |
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| ID | Term |
|---|---|
| D003907 | Dexamethasone |
| D002123 | Calcium Dobesilate |
| D000077212 | Ropivacaine |
| D000082 | Acetaminophen |
| D009020 | Morphine |
| D008012 | Lidocaine |
| ID | Term |
|---|---|
| D011246 | Pregnadienetriols |
| D011245 | Pregnadienes |
| D011278 | Pregnanes |
| D013256 | Steroids |
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| Ropivacaine | Drug | One hour before surgery the patients received single shot VIB block with the mixture according to the group allocation |
|
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| Paracetamol | Drug | After the block regression, at the first analgetic request the patients received the same analgesia protocol |
|
|
| Morphine | Drug | After the block regression, at the first analgetic request the patients received the same analgesia protocol |
|
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| Lidocaine | Drug | One hour before surgery the patients received single shot VIB block with the mixture according to the group allocation |
|
|
| First 4 hours postoperatively |
| Number of patients opioid free analgesia | Number of reported patients with no need opioid analgesia | First 24 hours postoperatively |
| VAS at the block regression | VAS evaluation on the VAS scale (0 - no pain, 10 - the worst pain possible ) | First 24 hours postoperatively |
| Cutaneous temperature ice-probe | The cold sensation on ice-probe test to both arms could be the same or burn likely | First 24 hours postoperatively |
| Total morphine consumption at 24 hours | Cumulative morphine administration in milligrams | First 24 hours postoperatively |
| 18784493 | Result | Zink W, Graf BM. The toxicity of local anesthetics: the place of ropivacaine and levobupivacaine. Curr Opin Anaesthesiol. 2008 Oct;21(5):645-50. doi: 10.1097/ACO.0b013e32830c214c. |
| 21519308 | Result | Williams BA, Hough KA, Tsui BY, Ibinson JW, Gold MS, Gebhart GF. Neurotoxicity of adjuvants used in perineural anesthesia and analgesia in comparison with ropivacaine. Reg Anesth Pain Med. 2011 May-Jun;36(3):225-30. doi: 10.1097/AAP.0b013e3182176f70. |
| 25774458 | Result | Huynh TM, Marret E, Bonnet F. Combination of dexamethasone and local anaesthetic solution in peripheral nerve blocks: A meta-analysis of randomised controlled trials. Eur J Anaesthesiol. 2015 Nov;32(11):751-8. doi: 10.1097/EJA.0000000000000248. |
| 24817819 | Result | Kawanishi R, Yamamoto K, Tobetto Y, Nomura K, Kato M, Go R, Tsutsumi YM, Tanaka K, Takeda Y. Perineural but not systemic low-dose dexamethasone prolongs the duration of interscalene block with ropivacaine: a prospective randomized trial. Local Reg Anesth. 2014 Apr 5;7:5-9. doi: 10.2147/LRA.S59158. eCollection 2014. |
| D009461 | Neurologic Manifestations |
| D012816 | Signs and Symptoms |
| D000072473 |
| Fused-Ring Compounds |
| D011083 | Polycyclic Compounds |
| D013259 | Steroids, Fluorinated |
| D001557 | Benzenesulfonates |
| D001555 | Benzene Derivatives |
| D006841 | Hydrocarbons, Aromatic |
| D006844 | Hydrocarbons, Cyclic |
| D006838 | Hydrocarbons |
| D009930 | Organic Chemicals |
| D001190 | Arylsulfonates |
| D017739 | Arylsulfonic Acids |
| D013451 | Sulfonic Acids |
| D013456 | Sulfur Acids |
| D013457 | Sulfur Compounds |
| D000813 | Anilides |
| D000577 | Amides |
| D000814 | Aniline Compounds |
| D000588 | Amines |
| D000083 | Acetanilides |
| D009022 | Morphine Derivatives |
| D009019 | Morphinans |
| D053610 | Opiate Alkaloids |
| D000470 | Alkaloids |
| D006571 | Heterocyclic Compounds |
| D006572 | Heterocyclic Compounds, Bridged-Ring |
| D006576 | Heterocyclic Compounds, 4 or More Rings |
| D000072471 | Heterocyclic Compounds, Fused-Ring |
| D010616 | Phenanthrenes |
| D011084 | Polycyclic Aromatic Hydrocarbons |