scholarly journals Evaluation of the Effect of Single Bolus Dose of Intravenous Dexmedetomidine in Spinal Anaesthesia for Lower Limb Surgeries

2020 ◽  
Vol 5 (1) ◽  
pp. 970-975
Author(s):  
Bandana Paudel ◽  
Pramod Rai ◽  
Robins Tiwari ◽  
Sanjay Gautam ◽  
Sumitra Paudel ◽  
...  
Keyword(s):  
Spinal Anaesthesia ◽  
Lower Limb ◽  
Receptor Agonist ◽  
Motor Block ◽  
Bolus Dose ◽  
Hyperbaric Bupivacaine ◽  
Single Bolus ◽  
Lower Limb Surgery ◽  
Single Bolus Dose ◽  
Group D

Introduction: The use of intrathecal adjuvants in spinal anaesthesia in enhancing and prolonging it’s action has been well established and is widely used for surgery below the umbilicus. Dexmedetomidine, a selective α2A receptor agonist is a suitable adjuvant due to its selective activity. Objectives: To evaluate the effect of a single bolus dose of intravenous dexmedetomidine as an adjuvant in cases undergoing lower limb surgeries under spinal anaesthesia. Methodology: One hundred patients posted for lower limb surgery under spinal anaesthesia with hyperbaric bupivacaine, were equally divided into two groups. In group D, in addition to spinal, intravenous dexmedetomidine 0.5mcg/kg over 10 min was given whereas group C patients received spinal and intravenous normal saline . Results: The onset of sensory and motor block was faster in group D (2.09 ± 0.71 min, 3.18 ± 1min)compared to group C (3.5 ± 0.82 min, 6.19 ± 1.87 min) which was statistically significant . The duration of sensory and motor block was also significantly prolonged in Group D (174.5 ± 14.04 min, 133.4 ± 10.42 min) as compared to Group C(138.2 ± 11.51 min, 120.4 ± 8.8 min).The duration of analgesia in Group D (225.3 ±20.11 min)was prolonged when compared to Group C (168.3 ± 15.11). Conclusion: Intravenous dexmedetomidine as a single bolus dose before spinal anaesthesia can fasten the onset of sensory and motor block, prolongs the duration of sensory and motor block and also increased the duration of analgesia.

scholarly journals Effects of single bolus dose of intravenous Dexmedetomidine on intrathecal hyperbaric Bupivacaine: a randomized double blind placebo controlled trial

2016 ◽  
Vol 3 (1) ◽  
pp. 8-12
Author(s):  
Manjunath Reddy ◽  
Archana Byadarahalli Narayanappa ◽  
Sreenivasa Babu
Keyword(s):  
Side Effects ◽  
Spinal Anaesthesia ◽  
Bolus Dose ◽  
Controlled Trial ◽  
Sensory Block ◽  
Control Group ◽  
Double Blind ◽  
Single Bolus ◽  
Single Bolus Dose ◽  
Group D

Background: To prolong the effect of spinal anaesthesia into the postoperative period many pharmacological agents are being used intrathecally and intravenously. The present study was designed to assess the effects of single bolus dose of intravenous Dexmedetomidine on spinal anaesthesia and analgesia in patients undergoing lower abdominal surgeries under spinal anaesthesia with 0.5% Hyperbaric Bupivacaine.Methods: One hundred patients posted for lower abdominal surgeries under spinal anaesthesia were randomly allocated to two groups. Group D (study group) patients received single bolus dose of 0.5mcg/kg of intravenous Dexmedetomidine and Group C (control group) received 10ml of normal saline. Variation in the onset, duration of sensory and motor level, duration of analgesia, effect on sedation and side effects were recorded.Results: The duration of sensory block and two segment regression was significantly prolonged in Group D (189.90±7.66 minutes, 104±20.6 minutes) as compared to Group C (145.60±11.98 minutes, 75±22.5 minutes). The onset of sensory block was earlier in Group D then compared to Group C which was statistically significant. The duration of analgesia in Group D (218.8 ± 11.36 minutes) was prolonged when compared to Group C (178.6±17.96 minutes). Sedation score and incidence of bradycardia was high in Group D when compared to Group C.Conclusion: Single bolus dose of IV Dexmedetomidine prior to spinal anaesthesia prolongs the duration of sensory block and duration of analgesia with satisfactory arousable sedation and acceptable side effects.

scholarly journals Haemodynamic Effects and Complications of Unilateral Spinal versus Standard Spinal Anesthesia in Elderly with Low Ejection Fraction Undergone Lower-Limb Surgery

2017 ◽  
Vol 5 (1) ◽  
pp. 20-24
Author(s):  
Md Mushfiqur Rahman ◽  
Md Mahbubul Hasan Munir ◽  
Raihanuddin ◽  
Shafiul Alam Shaheen ◽  
Md Abdus Salam Khan ◽  
...  
Keyword(s):  
Spinal Anesthesia ◽  
Spinal Anaesthesia ◽  
Lower Limb ◽  
Motor Block ◽  
Sympathetic Block ◽  
Hyperbaric Bupivacaine ◽  
Unilateral Spinal Anesthesia ◽  
Lower Limb Surgery ◽  
Group A ◽  
Group B

Background: Cardiovascular system may be profoundly affected by spinal anaesthesia due to unavoidable sympathetic blockade which is more prominent in elderly.A restricted sympathetic block during spinal anesthesia may minimize hemodynamic changes.Objective: To assess whether a unilateral spinal anaesthesia using 0.5% hyperbaric bupivacaine will restrict the sympathetic block to avoid the undesired cardio vascular effects.Materials and method: In this prospective study 60 ASA Ill and IV patients aged between 60-90 years undergoing unilateral lower limb surgery were included. Patients were divided into two groups. In group-A, dural puncture was performed with the patient in the lateral decubitus position with 1.5 mL of hyperbaric bupivacaine. In group-B, it was performed with the patient in a seated position using 1.5 mL hyperbaric bupivacaine. Each patient was then placed in supine position. The speed of injection was 1 mL/30s. Patients were placed in the lateral position with operated side down and kept in this position for 10 minutes. Motor and sensory levels were assessed, and haemodynamic alterations were monitored just after block, 5, 10, 15 and 30 minutes of spinal anaesthesia.Results: The demographic data were found similar in both groups. The time to the onset of the sensory and motor block was significantly shorter in group-B. The duration of motor and sensory block was significantly shorter in group-A. Haemodynamically all the parameters revealed better out come in unilateral spinal anesthesia. The incidence of complications (nausea, headache, and hypotension) was also lower in group A.Conclusion: When unilateral spinal anesthesia was performed using a low-dose, low-volume and low-flow injection technique, it provides adequate sensory-motor block and helps to achieve stable hemodynamic parameters during surgery on a lower limb. Furthermore, this technique avoids unnecessary paralysis on the non-operated side.Delta Med Col J. Jan 2017 5(1): 20-24

scholarly journals Clinical Comparative Study between Fentanyl and Dexmedetomidine with Bupivacaine for Lower Limb Surgery in Spinal Anaesthesia

2020 ◽  
Vol 5 (1) ◽  
pp. 126-130
Author(s):  
Tuhin Vashishth ◽  
Sangeeta Varun
Keyword(s):  
Spinal Anesthesia ◽  
Lower Limb ◽  
Motor Block ◽  
Sensory Block ◽  
Double Blind Study ◽  
Hyperbaric Bupivacaine ◽  
Double Blind ◽  
Block Time ◽  
Lower Limb Surgery ◽  
Group D

Background: Spinal anesthesia is a preferred technique of choice in infraumbilical surgeries. The spinal anesthesia effect can be improved by adding various adjuvant like Fentanyl, clonidine, dexmedetomidine. Dexmedetomidine is a highly selective alpha 2 adrenergic agonists. The aim of study to compare efficacy and safety between Dexmedetomidine and Fentanyl with Bupivacaine.Subjects and Methods:A prospective randomized, double-blind study was conducted on 100 patient by dividing them into two groups. Group D: 2.5ml (12.5mg) of 0.5% hyperbaric bupivacaine with 5mcg (0.5ml) dexmedetomidine and Group F : 2.5ml(12.5mg) of 0.5% hyperbaric bupivacaine with 2 5mcg(0.5ml)  fentanyl. The total volume injected intrathecally was 3.0ml in ASA I and II grade patient undergoing lower limb surgery.Results:Patients in dexmedetomidine groupD had a significantly longer sensory and motor block time than patients in fentanyl group F.The mean time of sensory regression to level S1 was 306.00 ± 13 .32 in group D and 206.14± 16.69 in group F(P<0.001). The regression time of motor block to reach modified Bromage 0 was 257.70±14.61 in group D and 178.54±14.23 in group F(P<0.001).Conclusion:Intrathecal Dexmedetomidine is associated with prolonging motor and sensory block as compare to Fentanyl.

scholarly journals Evaluating the effect of dexmedetomidine premedication on the quality of subarachnoid block, haemodynamics and sedation in patients undergoing lower limb surgeries: a prospective randomized controlled trial

2017 ◽  
Vol 5 (12) ◽  
pp. 5410
Author(s):  
Sandeep Sharma ◽  
Mahesh Somani ◽  
Madhan Chandramohan ◽  
Lalit Kumar Raiger
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Diastolic Blood Pressure ◽  
Spinal Anaesthesia ◽  
Lower Limb ◽  
Motor Block ◽  
Control Group ◽  
Sensory Blockade ◽  
Group D

Background: Present study was designed to evaluate the effect of intravenous dexmedetomidine on haemodynamics, sedation and quality of spinal anaesthesia with 0.5% hyperbaric bupivacaine.Methods: Sixty ASA grade 1 and 2, 18-60 years aged patients scheduled for elective lower limb surgeries were randomly divided into two groups: Group C (Control) and Group D (Study), received intravenous normal saline 10ml and intravenous dexmedetomidine 1μg/kg in dilution of 10ml respectively over 10minutes duration, 10minutes before subarachnoid block with 2.5ml of 0.5% hyperbaric bupivacaine. The heart rate (HR), systolic blood pressure (SBP), diastolic blood pressure (DBP), quality of sensory and motor block and level of sedation were monitored intraoperatively and postoperatively.Results: The heart rate was statistically significantly decreased in group D both intraoperatively and postoperatively. Intraoperative and postoperative SBP and DBP were lower in dexmedetomidine group but clinically that was insignificant. Intraoperative Ramsay sedation scores were significantly higher in dexmedetomidine group (3.49±0.240) as compared to control group (2.51±0.249) (p<0.001) but the patients were easily arousable. The duration of sensory blockade (208.83±9.53 min vs 162.83±9.62 min), duration for 2 dermatomal regression of sensory blockade (146.5±10.013min vs 98±8.57min) and the duration for motor block regression to Modified Bromage scale 0 (167.33±10.5min vs 137.83±11.94min) were significantly prolonged in dexmedetomidine group as compared to control group. The highest level of sensory blockade was also significantly higher in dexmedetomidine group (T6.90±0.759 vs T7.60±0.621). There was no difference in the time for attaining highest level of sensory blockade, time taken for motor blockade to reach Modified Bromage Scale 3 between both the groups. Average 24hr mean VAS score was significantly lower in dexmedetomidine group (1.37±0.15 vs1.72±0.17, p<0.001). Time to first request for rescue analgesic was also significantly longer in dexmedetomidine group (mean 174.33min vs 143.5min). Average 24hour consumption of tramadol analgesic was significantly higher in control group as compared to dexmedetomidine group (391.86±111.62mg vs 279.86±80.55mg, p<0.001).Conclusions: Intravenous dexmedetomidine significantly prolongs the duration of sensory and motor block of bupivacaine spinal anaesthesia. It provides excellent sedation and analgesia. Dexmedetomidine induced decrease in heart rate, systolic/diastolic blood pressure are not clinically significant. 

Compare the Analgesic Efficacy of Dexmedetomidineand Fentanyl as an Adjuvant to Bupivacaine for Lower Limb Surgery

2021 ◽  
Vol 15 (6) ◽  
pp. 2153-2155
Author(s):  
Arshi Naz ◽  
Mirza Shahzad Baig ◽  
Vijai Kumar ◽  
Samita S Khan ◽  
Sidra Javed ◽  
...  
Keyword(s):  
Spinal Anaesthesia ◽  
Lower Limb ◽  
P Value ◽  
Hyperbaric Bupivacaine ◽  
Rescue Analgesia ◽  
Sensory Blockade ◽  
Significant Difference ◽  
Lower Limb Surgery ◽  
Group A ◽  
Group B

Objective: To compare the analgesic effectiveness of Dexmedetomidine and Fentanyl as an adjuvant to 0.5% Bupivacaine in spinal anaesthesia for patients undergoing lower limb surgery. Study Design: Randomized controlled trial. Place & Duration:The study was conducted at department of Anesthesia, Shaheed Mohtarma Benazir Bhutto Institute of Trauma, Karachi for duration from 15thJuly2020 to 15thFebruary 2021. Methods: In this study 52 patients of both genders undergoing lower limb surgeries were included. Patient’s ages were ranging from 20 to 70 years. All the patients were divided into two Groups. Group A included 26 patients and received Inj. Dexmedetomidine 10 μg in 0.5ml normal saline with 12.5mg of 0.5% hyperbaric bupivacaine, Group B had 26 patients and received 25mg fentanyl with 12.5mg of 0.5% hyperbaric bupivacaine. Time to achieve T10 blockade, time to first rescue analgesia were examined and compare between both groups. All the statistical data was analyzed by SPSS 24.0. P-Value <0.05 was significantly considered. Results: Mean age of group A was 40.52±12.28 years and in group B it was 40.14±13.34 years. There were 18 (69.23%) male patients and 8 (30.77%) females in group A while in Group B 19 (73.08%) patients were male and 7 (26.92%) were females. No significant difference was observed between both groups regarding time to T10 blockade with p-value >0.05. A significant difference was found regarding time to rescue analgesia, in Group A it was 426.58±92.44 minutes and in Group B, it was 206.44±48.47 minutes (p-value <0.0001). Patients’ satisfaction was high in dexemedetomidine group as compared to fentanyl group. Conclusion: Dexmedetomidine 10 μg with 0.5% bupvicaine showed better effectiveness regarding time to first rescue analgesia as compared to fentanyl. No significant difference was observed regarding time to sensory blockade between both medications. Keywords: Dexmedetomidine, Fentanyl, Spinal Anaesthesia, Lower Limb Surgery, Sensory Block, Analgesia

scholarly journals Influence of injection rate of hyperbaric bupivacaine 0.75% on spinal anaesthesia in elderly patients with lower limb orthopaedic surgeries. A randomized controlled trial.

2019 ◽  
Vol 26 (08) ◽  
pp. 1251-1255
Author(s):  
Manzoor Ahmed Faridi (Retd) ◽  
Shaheen Mahmood ◽  
Muhammad Safi ur Rehman
Keyword(s):  
Elderly Patients ◽  
Spinal Anaesthesia ◽  
Lower Limb ◽  
Motor Block ◽  
Sensory Block ◽  
Injection Rate ◽  
Ethical Review ◽  
Sensory Level ◽  
Double Blind Study ◽  
Hyperbaric Bupivacaine

To determine the effect of speed of hyperbaric bupivacaine (0.75%) injection on clinical characteristics of spinal anaesthesia in elderly patients undergoing lower limb orthopaedic surgeries. Study Design: Prospective, randomized, double-blind study. Setting: This study was conducted in the operating theatre of Fauji Foundation Hospital, Rawalpindi. Period: August 2018 - March 2019. Materials and Methods: 60 elderly patients undergoing lower limb orthopaedic surgery were randomized into two groups based on injection rate (fast and slow). 1.5 ml of 0.75% hyperbaric bupivacaine was injected over 5 seconds (fast group) and 50 seconds (slow group). Study was undertaken after taking permission from institutional ethical review committee. Level of sensory block, motor block, and systolic blood pressure were recorded at pre-specified intervals. Incidences of hypotensive episode, nausea, phenylephrine and antiemetic use were also documented. Results: Our study did not reveal any difference in maximum level of sensory block attained (fast = median T4, interquartile range [T4–T6] vs slow = T4 [T4–T6], P = 0.77). There was no difference in mean time (minutes) to reach T10 sensory level (fast = 2.5 ± 1.2 vs slow = 2.2 ± 0.8, P = 0.27); maximum sensory level (fast = 4.2 ± 1.5 vs slow = 3.8 ± 1.2, P = 0.26) and maximum motor block level (min) (fast = 5.9 ± 1.4 vs slow = 5.7 ± 1.2, P = 0.56). The rate of hypotension (fast = 8/30 vs slow = 4/30, P = 0.33), nausea (fast = 5/30 vs slow = 3/30, P = 0.99) and phenylephrine use (fast = 5/30 vs slow = 3/30, P = 0.71) and antiemetic requirement (fast = 1/30 vs slow = 2/30, P = 0.99) was also alike. Conclusion: There is no effect of injection speed of intrathecal (0.75%) bupivacaine on the clinical features of spinal anaesthesia in older patients undergoing lower limb orthopedic surgery.

scholarly journals Comparative Study of Hyperbaric Bupivacaine and Isobaric Ropivacaine for Lower Limb Surgery under Spinal Anesthesia

2019 ◽  
Vol 2 (2) ◽  
pp. 22-27
Author(s):  
Gunjan Regmi ◽  
Rejina Shahi ◽  
Kanak Khanal ◽  
Kumud Pyakurel ◽  
Chetan Bohora ◽  
...  
Keyword(s):  
Heart Rate ◽  
Comparative Study ◽  
Spinal Anesthesia ◽  
Lower Limb ◽  
Motor Block ◽  
Hyperbaric Bupivacaine ◽  
Subarachnoid Block ◽  
Arterial Blood ◽  
Group I ◽  
Lower Limb Surgery

Introduction: Subarachnoid block is commonly employed technique for lower abdominal and lower limb procedures. Bupivacaine and ropivacaine are commonly used local anesthetics for subarachnoid block. The aim of this study is to compare the efficacy and safety of isobaric Ropivacaine over hyperbaric Bupivacaine. Methods: This was a prospective comparative study for a duration of six months. 60 ASA grade I-II adult patients between 16-60 years undergoing lower limb surgery under spinal anesthesia were randomized into two groups. Group I including patients who received 15 mg of hyperbaric bupivacaine 0.5% and group II including patients who received 22.5 mg of isobaric ropivacaine 0.75%. The onset and duration of sensory and motor block and hemodynamics including heart rate (HR), non invasive mean arterial blood pressure (MAP) and respiratory depression were recorded. Data were entered in Microsoft excel and statistical analysis was done by chi square test and T test using SPSS (version 23.0). Results: Both the groups were demographically statistically insignificant. Successful block was attained in all patients in both groups. The sensory onset and motor onset were significantly delayed in the Ropivacaine Group compared to the Bupivacaine Group P<0.001. There was no significant difference in the hemodynamics (heart rate and mean arterial pressure ). Conclusions: Though isobaric ropivacaine provided lesser degree of sensory and motor block with delayed onset compared to hyperbaric bupivacaine, it can effectively and safely used in subarachnoid block in lower limb surgeries without any major hemodynamic changes and adverse effects.

scholarly journals COMPARISON OF INTRATHECAL DEXMEDETOMIDINE AND MAGNESIUM SULPHATE AS AN ADJUVANT TO 0.5% HYPERBARIC BUPIVACAINE IN LOWER LIMB SURGERY

2021 ◽  
pp. 1-3
Author(s):  
Shaheer Ahmed Siddiqui ◽  
Kapil Rastogi ◽  
Aamir Laique Khan
Keyword(s):  
Magnesium Sulfate ◽  
Postoperative Analgesia ◽  
Lower Limb ◽  
Motor Block ◽  
Onset Time ◽  
Sensory Block ◽  
Hyperbaric Bupivacaine ◽  
Block Level ◽  
Lower Limb Surgery ◽  
Group B

Background: Epidural anesthesia is commonly used for perioperative as well as postoperative analgesia in lower limb surgeries. Adjuvant in spinal anesthesia prolongs the duration of anesthesia as well as postoperative analgesia. In this study we evaluate the effects of intrathecal dexmedetomidine and magnesium sulfate as an adjuvant to 0.5% hyperbaric bupivacaine in lower limb surgeries. Methods: Total 60 patients belonging to ASA I or II aged 24 to 57 years of either sex were included in this study and randomly distributed into two groups. Group (B+M) received intrathecal 100mg magnesium sulfate and Group (B+D) received intrathecal 5.0 mcg dexmedetomidine with hyperbaric bupivacaine 15mg (3ml of 0.5%). Onset and duration of sensory and motor block, duration of analgesia, hemodynamic changes and complications were recorded. Results: The mean Onset time of sensory block at T10 (min.), Time to maximum sensory block level (min.), Time in minutes for complete motor block (min.), Time for Motor Emergence from Bromage 3 (min.), Time for Sensory Emergence and Time for first analgesia (min) were significantly different between groups. Conclusion: The dexmedetomidine as an adjuvant with hyperbaric bupivacaine leads to earlier onset and prolonged duration of both sensory and motor block as compared to magnesium sulfate.

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