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Yang JR, Li YY, Ran TJ, Lin XY, Xu JY, Zhou SL, Huang PJ. Esketamine Combined with Dexmedetomidine to reduce Visceral Pain During elective Cesarean Section Under Combined Spinal-Epidural Anesthesia: A double-Blind Randomized Controlled Study. Drug Des Devel Ther 2024; 18:2381-2392. [PMID: 38911034 PMCID: PMC11193401 DOI: 10.2147/dddt.s460924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 06/09/2024] [Indexed: 06/25/2024] Open
Abstract
Purpose We aimed to evaluate the effect of intravenous esketamine combined with dexmedetomidine as supplemental analgesia in reducing intraoperative visceral pain during elective cesarean section under combined spinal-epidural anesthesia (CSEA). Patients and Methods A total of 269 parturients scheduled for elective cesarean section under CSEA between May 2023 and August 2023 were assessed. The parturients were randomly allocated to receiving either intravenous infusion of 0.3-mg/kg esketamine combined with 0.5-μg/kg dexmedetomidine (group ED, n=76), 0.5-μg/kg dexmedetomidine (group D, n=76), or normal saline (group C, n=76) after umbilical cord clamping. The primary outcome was intraoperative visceral pain. Secondary outcomes included the visual analog scale (VAS) score for pain evaluation and other intraoperative complications. Results The incidence of visceral pain was lower in group ED [9 (12.7%)] than in group D [32 (43.8%)] and group C [36 (48.6%), P <0.0001]. The VAS score was also lower in group ED when exploring abdominal cavity [0 (0), P <0.0001] and suturing the muscle layer [0 (0), P =0.036]. The mean arterial pressure was higher in group D [83 (9) mmHg] and group ED [81 (11) mmHg] than in group C [75 (10) mmHg, P <0.0001] after solution infusion. The heart rate after infusion of the solution was lower in group D [80 (12) bpm] than in group C [86 (14) bpm] and group ED [85 (12) bpm, P = 0.016]. The incidence of transient neurologic or mental symptoms was higher in group ED compared to group C and group D (76.1% vs 18.9% vs 23.3%, P<0.0001). Conclusion During cesarean section, 0.3-mg/kg esketamine combined with 0.5-μg/kg dexmedetomidine can alleviate visceral traction pain and provide stable hemodynamics. Parturients receiving this regimen may experience transient neurologic or mental symptoms that can spontaneously resolve at the end of the surgery.
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Affiliation(s)
- Ji-Rong Yang
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong Province, People’s Republic of China
| | - Ying-Yuan Li
- Department of Anesthesiology, Huadu District People’s Hospital, Guangzhou, Guangdong Province, People’s Republic of China
| | - Tao-Jia Ran
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong Province, People’s Republic of China
| | - Xiao-Yu Lin
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong Province, People’s Republic of China
| | - Jin-Yan Xu
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong Province, People’s Republic of China
| | - Shao-Li Zhou
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong Province, People’s Republic of China
| | - Pin-Jie Huang
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong Province, People’s Republic of China
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Sinha J, Pokhriyal AS, Asthana V, Nautiyal R. Dexmedetomidine vs Dexamethasone as an Adjuvant to Levobupivacaine in Ultrasound-Guided Transversus Abdominis Plane Block for Postoperative Analgesia in Patients Undergoing Total Abdominal Hysterectomies. Anesth Pain Med 2023; 13:e142059. [PMID: 38666229 PMCID: PMC11041814 DOI: 10.5812/aapm-142059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 04/28/2024] Open
Abstract
Background In the postoperative period, open total abdominal hysterectomy (TAH) surgeries induce considerable pain. Multimodal strategies are being used to alleviate pain. Objectives This study aimed to examine the efficacy and safety of dexamethasone and dexmedetomidine as an adjuvant to levobupivacaine in ultrasound-guided transversus abdominis plane (TAP) blocks for postoperative pain in TAH patients. Methods A total of 72 patients with ASA grade I and grade II were randomly and equally assigned to two groups. After the completion of surgery with a subarachnoid block (SAB), patients in group 1 received a mixture of 20 mL of 0.25% levobupivacaine and 4 mg of dexamethasone on each side of the TAP block. Patients in group 2 received a mixture of 20 mL of 0.25% levobupivacaine and dexmedetomidine, with a total dose of 1 µg/kg body weight evenly distributed bilaterally in the TAP block. Patients were evaluated for pain using the Visual Analog Scale (VAS), total tramadol consumption as rescue analgesia, time to first rescue analgesia, any adverse effects, and patient satisfaction. Results When comparing VAS scores for pain assessment, we observed that the mean VAS score was initially comparable between the two groups for the first hour. However, at 6, 9, and 12 h, VAS scores were significantly lower in group 2. The mean total tramadol consumption was higher in group 1 than in group 2 (213.33 ± 44.08 vs 161.11 ± 37.93 mg, P-value 0.027). The time to the first rescue analgesia after the TAP block in the postoperative period was significantly longer in group 2 (47.5 ± 62.76 vs 77.22 ± 56.14 min, P-value 0.002). No significant side effects were noted, and a greater proportion of patients in group 2 expressed satisfaction with their overall pain treatment. Conclusions The addition of dexmedetomidine to levobupivacaine is superior to the addition of dexamethasone, as it prolongs the duration of the block in the dexmedetomidine group. However, the use of dexamethasone as an adjuvant is a good alternative option, particularly due to its lower cost and reduced incidence of adverse effects such as postoperative nausea and vomiting.
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Affiliation(s)
- Jyoti Sinha
- Department of Anesthesiology, Himalayan Institute of Medical Sciences, Jollygrant, Dehradun
| | | | - Veena Asthana
- Department of Anesthesiology, Himalayan Institute of Medical Sciences, Jollygrant, Dehradun
| | - Ruchira Nautiyal
- Department of Gynecology, Himalayan Institute of Medical Sciences, Jollygrant, Dehradun
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Effect of different doses of epidural dexmedetomidine on reducing visceral traction reaction for cesarean section: a double-blind randomized controlled trial. J Anesth 2023; 37:371-378. [PMID: 36692824 DOI: 10.1007/s00540-023-03166-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 01/13/2023] [Indexed: 01/25/2023]
Abstract
PURPOSE This study aimed to evaluate the effect of different doses of epidural dexmedetomidine on reducing visceral traction reaction for cesarean section under epidural anesthesia. METHODS Nulliparas were randomly allocated to receive epidural ropivacaine alone (group R) or in combination with dexmedetomidine 0.5 μg/kg (group RD0.5), 0.75 μg/kg (group RD0.75), and 1 μg/kg (group RD1) with 46 nulliparas in each group. The primary outcome was intraoperative visceral traction reaction (graded from 0 to 3, with 0 and 3, respectively, regarded as 'no discomfort in stomach or perineum; no nausea, vomiting or intestinal tympanites' and 'serious visceral pain, nausea and vomiting, intestinal tympanites'). RESULTS Visceral traction reaction was significantly alleviated in group RD0.5, RD0.75, and RD1, respectively, compared to group R while it was comparable among RD groups. Increased Ramsay Sedation Scale and lower incidence of shivering were found in RD groups compared to group R (p < 0.001). None of the primipara has experienced Ramsay Sedation Scale above 4. Higher incidence of thirst was found in group RD0.75 and RD1 compared to group R and RD0.5 (p < 0.001). The Apgar scores at 1 and 5 min of the neonates, onset time to T6 sensory block, maximum sensory block level, the incidence of hypotension, bradycardia and nausea or vomiting were comparable among groups. CONCLUSION It is suggested that 0.5 μg/kg epidural dexmedetomidine can be used as adjuvant to epidural ropivacaine during cesarean section, because of its alleviating visceral traction reaction, moderate sedating, and reducing shivering without thirst increase.
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Singla N, Garg K, Jain R, Malhotra A, Singh MR, Grewal A. Analgesic efficacy of dexamethasone versus dexmedetomidine as an adjuvant to ropivacaine in ultrasound-guided transversus abdominis plane block for post-operative pain relief in caesarean section: A prospective randomised controlled study. Indian J Anaesth 2021; 65:S121-S126. [PMID: 34703057 PMCID: PMC8500199 DOI: 10.4103/ija.ija_228_21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 07/29/2021] [Accepted: 08/18/2021] [Indexed: 11/07/2022] Open
Abstract
Background and Aims: Transversus abdominis plane (TAP) block is commonly used to treat post-operative pain after lower abdominal surgeries. The aim of this randomised controlled study was to assess the efficacy of addition of dexmedetomidine or dexamethasone to ropivacaine in TAP block and compare the two for post-operative pain relief in caesarean section. Methods: A hundred parturients (18–45 years) undergoing caesarean section under spinal anaesthesia received ultrasound-guided (USG) bilateral TAP block with 50ml of 3mg/kg ropivacaine along with 0.1mg/kg dexamethasone (Group A) or 1μg/kg dexmedetomidine (Group B) in this prospective, randomised, double-blind study. Time to initial self-reporting of post-operative pain, time to first rescue analgesic demand, visual analogue scale (VAS) for pain haemodynamic parameters and adverse effects if any were noted, anda P value < 0.005 was considered as statistically significant. Results: Time to initial self-reporting of post-operative pain (411.35 vs. 338.20 min, P < 0.005) and time to first rescue analgesic (474.30 vs. 407.30 min, P < 0.005) were significantly longer in group B as compared to group A. VAS score at the time of initial self-reporting of pain was significantly lower in group B. No significant haemodynamic changes or side-effects were noted. Conclusion: Addition of dexmedetomidine to ropivacaine as compared with dexamethasone in bilateral TAP block following caesarean section prolongs the time to initial post-operative pain and time to first rescue analgesic consumption.
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Affiliation(s)
- Nitika Singla
- Department of Anaesthesiology, Dayanand Medical College and Hospital, Ludhiana, Punjab, India
| | - Kamakshi Garg
- Department of Anaesthesiology, Dayanand Medical College and Hospital, Ludhiana, Punjab, India
| | - Richa Jain
- Department of Anaesthesiology, Dayanand Medical College and Hospital, Ludhiana, Punjab, India
| | - Aaina Malhotra
- Department of Anaesthesiology and Critical Care, Christian Medical College and Hospital, Vellore, Tamil Nadu, India
| | - Mirley Rupinder Singh
- Department of Anaesthesiology, Dayanand Medical College and Hospital, Ludhiana, Punjab, India
| | - Anju Grewal
- Department of Anaesthesiology, Dayanand Medical College and Hospital, Ludhiana, Punjab, India
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Parate LH, Manjrekar SP, Anandaswamy TC, Manjunath B. The effect of addition of low dose fentanyl to epidural bupivacaine (0.5%) in patients undergoing elective caesarean section: A randomized, parallel group, double blind, placebo controlled study. J Postgrad Med 2015; 61:27-31. [PMID: 25511214 PMCID: PMC4944362 DOI: 10.4103/0022-3859.147032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 03/10/2014] [Accepted: 08/31/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Opioids have synergistic action with local anesthetics which may alter characteristics of epidural block. Giving opioids to mother before delivery of baby is still fully not accepted with some fearing risk of neonatal depression. AIMS Our primary aim was to evaluate the analgesic effect of addition of 50 μg fentanyl to epidural 0.5% bupivacaine in patients undergoing elective caesarean section using visual analog scale. The secondary aim was to assess onset of analgesia, volume of drug required to achieve T6 level, grade and duration of motor block and Apgar score. MATERIALS AND METHODS In this prospective, randomized, double blind, placebo controlled study 64 patients scheduled for elective caesarean section under epidural anesthesia were randomly divided into two groups of 32 each. The fentanyl group received 1 ml of 50 μg fentanyl and the saline group received 1 ml of normal saline mixed with 10 ml of 0.5% bupivacaine for epidural anesthesia. VAS score, time to achieve T6 level, dose of bupivacaine, intraoperative analgesic consumption and duration of analgesia, grade and duration of motor block and any adverse maternal and neonatal effects were noted. STATISTICAL ANALYSIS Data was analyzed using Students t test, chi-square test and Mann-Whitney U-test. The values of P<0.05 were considered statistically significant. RESULTS Fentanyl improved the VAS score significantly (1.6±1.32) compared to the saline group (3.77±1.0, P<0.0001). It also reduced the intraoperaitve analgesic supplementation compared to the saline group. (P=0.031). The postoperative duration of analgesia was prolonged in the fentanyl group (275.80±13.61 min) compared to the saline group (191.47±12.16 min, P<0.0001). The other characteristics of epidural block were unaltered. CONCLUSION Addition of 50 μg fentanyl to epidural 0.5% bupivacaine significantly reduces the VAS score. It also reduces intra-operative analgesia supplementation and prolongs the duration of postoperative analgesia without altering the other characteristics of block. The neonatal outcome is not affected with addition of fentanyl before delivery of baby.
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MESH Headings
- Adult
- Analgesics, Opioid/administration & dosage
- Analgesics, Opioid/adverse effects
- Anesthesia, Epidural
- Anesthesia, Obstetrical
- Anesthetics, Local/administration & dosage
- Anesthetics, Local/adverse effects
- Bupivacaine/administration & dosage
- Bupivacaine/adverse effects
- Cesarean Section
- Dose-Response Relationship, Drug
- Double-Blind Method
- Female
- Fentanyl/administration & dosage
- Humans
- Infant, Newborn
- Injections, Epidural
- Pain Measurement
- Pain, Postoperative/drug therapy
- Pregnancy
- Prospective Studies
- Treatment Outcome
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Affiliation(s)
- LH Parate
- Department of Anaesthesia, MS Ramaiah Medical College, Bangalore, Karnataka, India
| | - SP Manjrekar
- Department of Anaesthesia, Indira Gandhi Medical College, Nagpur, Maharashtra, India
| | - TC Anandaswamy
- Department of Anaesthesia, MS Ramaiah Medical College, Bangalore, Karnataka, India
| | - B Manjunath
- Department of Community Medicine, MS Ramaiah Medical College, Bangalore, Karnataka, India
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Kimura M, Okamoto T, Tsukagoshi H, Sato J, Saito S. Effect of flurbiprofen, metoclopramide and droperidol for nausea and emesis during cesarean section under spinal anesthesia. J Anesth 2011; 25:692-7. [DOI: 10.1007/s00540-011-1203-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2009] [Accepted: 06/30/2011] [Indexed: 10/18/2022]
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Hong JY, Jee YS, Jeong HJ, Song Y, Kil HK. Effects of epidural fentanyl on speed and quality of block for emergency cesarean section in extending continuous epidural labor analgesia using ropivacaine and fentanyl. J Korean Med Sci 2010; 25:287-92. [PMID: 20119585 PMCID: PMC2811299 DOI: 10.3346/jkms.2010.25.2.287] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2008] [Accepted: 02/02/2009] [Indexed: 11/20/2022] Open
Abstract
We performed a prospective, randomized, and double-blind study comparing the top-up effects of 2% lidocaine/100 microg fentanyl/epinephrine (n=31) and 2% lidocaine/saline/epinephrine (n=30) when extending an epidural labor analgesia using low-dose ropivacaine and fentanyl. Survival analysis for the sensory blocks to the T4 level showed no statistically significant differences in onset time to T4 between the 2 groups. Onset times (min) to T4-sensory blocks for cold and pinprick were not different between the two groups. However, median maximum sensory level in the lidocaine-fentanyl group (T1 for cold and T2 for pinprick) was significantly higher than that in the lidocaine-saline group (T3 and T4, respectively). The lidocaine-fentanyl group exhibited less visceral pain (6.5% vs. 36.7%), less supplementation of lidocaine (6.5% vs. 43.3%), and less nausea (6.5% vs. 26.7%) compared with the lidocaine-saline group during the intraoperative period. It is concluded that adding fentanyl to 2% lidocaine does not speed up the onset of the block when the onset is tested with cold or sharp pinprick but improves the quality of analgesia with fewer side effects in emergency top-up for cesarean section.
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Affiliation(s)
- Jeong-Yeon Hong
- Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Young Seok Jee
- Department of Anesthesiology and Pain Medicine, Cheil General Hospital, Women's Health Care Center, Kwangdong University College of Medicine, Seoul, Korea
| | - Hyeong Jun Jeong
- Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Young Song
- Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Hae Keum Kil
- Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea
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Balki M, Kasodekar S, Dhumne S, Carvalho JCA. The Prophylactic Granisetron Does Not Prevent Postdelivery Nausea and Vomiting During Elective Cesarean Delivery Under Spinal Anesthesia. Anesth Analg 2007; 104:679-83. [PMID: 17312229 DOI: 10.1213/01.ane.0000253036.06307.5c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Intraoperative nausea and vomiting (IONV) during cesarean delivery (CD) under regional anesthesia has multiple etiologies, and the role of prophylactic antiemetics for prevention of IONV remains controversial. In this trial we sought to determine the efficacy of granisetron for prevention of IONV during elective CD under spinal anesthesia with strict control of the causative factors. METHODS The study was conducted as a randomized, double-blind, placebo-controlled trial in 176 parturients. After administration of 10 mL/kg of lactated Ringer's solution, spinal anesthesia was administered with 0.75% hyperbaric bupivacaine 15 mg, fentanyl 10 microg, and morphine 100 microg. Systolic blood pressure was maintained at 100% of baseline with aliquots of phenylephrine. Oxytocin 0.5 IU was administered IV upon delivery followed by a maintenance infusion. The patients received either granisetron 1 mg or normal saline IV immediately after cord clamping. In case of persistent IONV, rescue dimenhydrinate 50 mg IV was administered. The primary outcome was the presence of postdelivery IONV. Secondary outcomes included the need for rescue antiemetic, hypotension, pain, and adverse effects. RESULTS The incidence of postdelivery IONV was 20.4% in the granisetron group and 17.0% in the control group (P = 0.56, NS). The incidence of intraoperative hypotension, pre- (9.6%) and postdelivery (6.2%), was similar in both groups. The incidence of postdelivery pain (2.2% vs 4.5%, P = 0.68) and the requirement for rescue antiemetic (8% vs 6.8%, P = 0.77) were similar in the granisetron and control groups. CONCLUSIONS Despite strict control of the causative factors, IONV still affects 18% of patients undergoing elective CD, and prophylactic granisetron 1 mg is ineffective under the studied circumstances.
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Affiliation(s)
- Mrinalini Balki
- Department of Anesthesia and Pain Management, Mount Sinai Hospital, University of Toronto, Ontario, Canada.
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Rasooli S, Moslemi F. Effects of Varying Doses of Spinal 0.25% Hyperbaric Bupivacaine on Visceral Pain in Cesarean Section. JOURNAL OF MEDICAL SCIENCES 2006. [DOI: 10.3923/jms.2007.136.140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Russell IF. At caesarean section under regional anaesthesia, it is essential to test sensory block with light touch before allowing surgery to start. Int J Obstet Anesth 2006; 15:294-7. [PMID: 16949275 DOI: 10.1016/j.ijoa.2006.06.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- I F Russell
- Consultant Anaesthetist, Hull Royal Infirmary, UK.
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Russell IF. A comparison of cold, pinprick and touch for assessing the level of spinal block at caesarean section. Int J Obstet Anesth 2004; 13:146-52. [PMID: 15321392 DOI: 10.1016/j.ijoa.2003.12.007] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/01/2003] [Indexed: 01/29/2023]
Abstract
The sensory block levels of 102 women undergoing caesarean section under spinal anaesthesia were assessed by four different methods: sharp pinprick (Neurotip tester pin), cold (ethyl chloride spray), touch (Neurotip tester pin), touch (ethyl chloride spray). While the data indicate a median difference of some 2 segments between the levels of block assessed by sharp pinprick or cold, and touch, there was no constant relationship between these levels of block within the group nor within individual patients: variable and at times very large differences in the levels of block assessed among these modalities existed: up to 10 segments (pinprick - touch); 11 segments (cold - touch). For any one individual, it is not possible to predict the level of block to touch from a known level of block to sharp pinprick or cold. To facilitate comparison of results across future studies it is suggested that block levels to touch sensation should always be reported. The results suggest that, for clinical purposes, there is no difference in outcomes whether Neurotip touch or ethyl chloride spray touch sensations are used. When using diamorphine 100 micrograms/mL mixed with bupivacaine 0.5% w/v in 8% dextrose, no patient felt any pain or discomfort provided the block to Neurotip or ethyl chloride touch sensations included T6 or above.
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Affiliation(s)
- I F Russell
- Department of Anaesthesia, Hull Royal Infirmary, Hull, UK.
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Irestedt L. Spinal anaesthesia for caesarean delivery. ACTA ANAESTHESIOLOGICA SCANDINAVICA. SUPPLEMENTUM 1999; 113:21-3. [PMID: 9932115 DOI: 10.1111/j.1399-6576.1998.tb04982.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- L Irestedt
- Department of Anaesthesiology and Intensive Care, Karolinska Hospital, Stockholm, Sweden
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