scholarly journals Comparison of Dexmedetomidine and Dexamethasone as Adjuvants to Ultra-Sound Guided Interscalene Block in Arthroscopic Shoulder Surgery: A Double-Blinded Randomized Placebo-Controlled Study

2021 ◽  
Vol 11 (3) ◽  
Author(s):  
Roman Margulis ◽  
Jacquelyn Francis ◽  
Bryan Tischenkel ◽  
Adam Bromberg ◽  
Domenic Pedulla ◽  
...  

Background: Interscalene block is one of the popular methods for decreasing pain and analgesic consumption after shoulder arthroscopic surgeries. Objectives: The objective is to compare the analgesic duration of effects of dexmedetomidine and dexamethasone as adjuvants to 0.5% ropivacaine in ultrasound-guided interscalene blocks for arthroscopic shoulder surgery in an ambulatory setting. Methods: In this randomized controlled trial, 117 adult patients candidate for ambulatory arthroscopic shoulder surgery under general anesthesia were divided into three groups to perform an ultra-sound guided interscalene block before the surgery. The ropivacaine (control) group received ropivacaine 0.5% 20 mL, group Dexamethasone received ropivacaine 0.5% 20 mL plus 4mg dexamethasone, and group dexmedetomidine received ropivacaine 0.5% 20 mL plus 75 mcg of dexmedetomidine. Time to return of sensory function, of motor function, of first pain sensation, amount of opioid medication consumed at 24 hours and 48 hours post-operatively were measured. Results: The 24-hour median (25th- 75th percentile) opioid consumption in morphine equivalents was similar between groups 22.5 mg (10 - 30), 15 mg (0 - 30), and 15 mg (0 - 20.6) in the ropivacaine, dexmedetomidine, and dexamethasone groups, respectively (P = 0.130). The median (25th- 75th percentile) 48 hours post-operatively, the median opioid consumption in morphine equivalents was 40 mg (25 - 67.5) in the ropivacaine group, 30 mg (22 - 50.6) in the dexamethasone group, and 52.5 mg (30 - 75) in the dexmedetomidine group (P = 0.278). The median 24-hour pain scores were 6 (5 - 8) in the ropivacaine control group, 7 (5.5 - 8) in the dexamethasone group, and 7 (4 - 9) in the dexmedetomidine group (P = 0.573). Conclusions: There was no statistical difference in opioid consumption at 24 and 48 hours post-operatively when comparing dexmedetomidine, dexamethasone, and no adjuvant. However, intraoperative opioid use was significantly lower with dexmedetomidine compared to dexamethasone and plain 0.5% ropivacaine. The safe side effect profile of dexmedetomidine makes it a reasonable alternative as an adjuvant for peripheral nerve blockade when dexamethasone use may be contraindicated.

2021 ◽  
pp. rapm-2021-102795
Author(s):  
Jae Hee Woo ◽  
Hyun Jung Lee ◽  
Hye-Won Oh ◽  
Jong Wha Lee ◽  
Hee Jung Baik ◽  
...  

Background and objectivesA single injection interscalene block (ISB) is a common regional analgesic technique in patients undergoing arthroscopic shoulder surgery. However, rebound pain after ISB resolution may reduce its overall benefit. Our primary aim was to assess whether perineural dexamethasone reduces the intensity and incidence of rebound pain in patients undergoing arthroscopic shoulder surgery under general anesthesia combined with a preoperative single injection ISB.MethodsThe patients were randomly assigned to receive single injection ISB using either 0.5% ropivacaine (control) or 0.5% ropivacaine containing 5 mg of dexamethasone. The primary outcomes were the pain score difference before and after ISB resolution, and the incidence of rebound pain. The secondary outcomes were the onset and duration of rebound pain, the presence of sleep disturbances due to postoperative pain, the first time when an analgesic was requested, and pain scores at various predefined time points.ResultsPain increase following ISB resolution was lower in the dexamethasone group compared with the control group (4.5±2.4 and 6.9±2.2, respectively, p<0.001). The incidence of rebound pain was significantly lower in the dexamethasone group compared with the control group (37.1% and 82.9%, respectively, p<0.001). The controls experienced greater sleep disturbance during the postoperative period compared with those who received ISB with perineural dexamethasone.ConclusionsPerineural dexamethasone added to ISB using ropivacaine led to a much smoother resolution of ISB, reflected in a significantly smaller increase in pain after block resolution, a lower incidence of rebound pain and a lower sleep disturbance during the first postoperative week.Trial registration numberClinical Trial Registry of Korea (KCT0004418).


2018 ◽  
Vol 5 (1) ◽  
pp. 10-15 ◽  
Author(s):  
Sujita Manandhar ◽  
Kishor Manandhar ◽  
Sharad Khakrel

Introductions: Postoperative sore throat (POST) is a commonly seen adverse event after general anesthesia with endotracheal intubation. Dexamethasone, a potent corticosteroid with anti-inflammatory action is the most popular steroid studied in this regard with positive results. Methods: This randomized, prospective, double-blinded, placebo-controlled study was conducted on one hundred and ten adult patients of either sex, American Society of Anesthesiologists physical status I & II, undergoing elective surgeries requiring endotracheal tube intubation. After obtaining written informed consent, they were randomly divided into Control (A, n=55) and Dexamethasone (B, n=55) groups and received either an injection of Dexamethasone (Group B) 8 mg intravenously or an equivalent volume of Normal Saline (Group A) just before entering the operating theatre. All the patients received a similar anesthesia with endotracheal tube intubation and at the end of surgery, extubated and transferred to the post-anesthesia care unit. The incidence and severity of sore throat were assessed at 1, 6 and 24 hours post-extubation. Severity of sore throat were graded on a 4 point scale, p <0.05 was considered significant. Results: Incidence of POST in Dexamethasone group was found significantly low compared to the control group up to six hours (p<0.05) but was comparable at 24 hours post extubation. Severity of POST in the study group was of lower grade in compare to control group. Conclusions: Prophylactic intravenous Dexamethasone 8 mg administered to patients undergoing elective surgeries requiring endotracheal tube intubation significantly reduces the incidence and severity of POST up to six hours post-extubation.


2019 ◽  
Vol 131 (6) ◽  
pp. 1316-1326 ◽  
Author(s):  
RyungA Kang ◽  
Ji Seon Jeong ◽  
Ki Jinn Chin ◽  
Jae Chul Yoo ◽  
Jong Hwan Lee ◽  
...  

Abstract Editor’s Perspective What We Already Know about This Topic What This Article Tells Us That Is New Background Interscalene brachial plexus block of the C5–C6 roots provides highly effective postoperative analgesia after shoulder surgery but usually results in hemidiaphragmatic paresis. Injection around the superior trunk of the brachial plexus is an alternative technique that may reduce this risk. The authors hypothesized that the superior trunk block would provide noninferior postoperative analgesia compared with the interscalene block and reduce hemidiaphragmatic paresis. Methods Eighty patients undergoing arthroscopic shoulder surgery were randomized to receive a preoperative injection of 15 ml of 0.5% ropivacaine and 5 μg · ml−1 epinephrine around either (1) the C5–C6 nerve roots (interscalene block group) or (2) the superior trunk (superior trunk block group). The primary outcome was pain intensity 24 h after surgery measured on an 11-point numerical rating score; the prespecified noninferiority limit was 1. Diaphragmatic function was assessed using both ultrasonographic measurement of excursion and incentive spirometry by a blinded investigator before and 30 min after block completion. Results Seventy-eight patients completed the study. The pain score 24 h postoperatively (means ± SDs) was 1.4 ± 1.0 versus 1.2 ± 1.0 in the superior trunk block (n = 38) and interscalene block (n = 40) groups, respectively. The mean difference in pain scores was 0.1 (95% CI, −0.3 to 0.6), and the upper limit of the 95% CI was lower than the prespecified noninferiority limit. Analgesic requirements and all other pain measurements were similar between groups. Hemidiaphragmatic paresis was observed in 97.5% of the interscalene block group versus 76.3% of the superior trunk block group (P = 0.006); paresis was complete in 72.5% versus 5.3% of the patients, respectively. The decrease in spirometry values from baseline was significantly greater in the interscalene block group. Conclusions The superior trunk block provided noninferior analgesia compared with interscalene brachial plexus block for up to 24 h after arthroscopic shoulder surgery and resulted in significantly less hemidiaphragmatic paresis.


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