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Chen YH, Chou WH, Yie JC, Teng HC, Wu YL, Wu CY. Influence of Catheter-Incision Congruency in Epidural Analgesia on Postcesarean Pain Management: A Single-Blinded Randomized Controlled Trial. J Pers Med 2021; 11:jpm11111099. [PMID: 34834451 PMCID: PMC8619661 DOI: 10.3390/jpm11111099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 10/20/2021] [Accepted: 10/26/2021] [Indexed: 11/17/2022] Open
Abstract
Patient-controlled epidural analgesia (PCEA) or epidural morphine may alleviate postcesarean pain; however, conventional lumbar epidural insertion is catheter–incision incongruent for cesarean delivery. Methods: In total, 189 women who underwent cesarean delivery were randomly divided into four groups (low thoracic PCEA, lumbar PCEA, low thoracic morphine, and lumbar morphine groups) for postcesarean pain management. Pain intensities, including static pain, dynamic pain, and uterine cramp, were measured using a 100 mm visual analog scale (VAS). The proportion of participants who experienced dynamic wound pain with a VAS score of >33 mm was evaluated as the primary outcome. Adverse effects, including lower extremity blockade, pruritus, postoperative nausea and vomiting, sedation, and time of first passage of flatulence, were evaluated. Results: The low thoracic PCEA group had the lowest proportion of participants reporting dynamic pain at 6 h after spinal anesthesia (low thoracic PCEA, 28.8%; lumbar PCEA, 69.4%; low thoracic morphine, 67.3%; lumbar morphine group, 73.9%; p < 0.001). The aforementioned group also reported the most favorable VAS scores for static, dynamic, and uterine cramp pain during the first 24 h after surgery. Adverse effect profiles were similar among the four groups, but a higher proportion of participants in the lumbar PCEA group (approximately 20% more than in the other three groups) reported prolonged postoperative lower extremity motor blockade (p = 0.005). In addition, the first passage of flatulence after surgery reported by the low thoracic PCEA group was approximately 8 h earlier than that of the two morphine groups (p < 0.001). Conclusions: Epidural congruency is essential to PCEA for postcesarean pain. Low thoracic PCEA achieves favorable analgesic effects and may promote postoperative gastrointestinal recovery without additional adverse effects.
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Affiliation(s)
- Ying-Hsi Chen
- Department of Anesthesiology, National Taiwan University Hospital, Taipei 100, Taiwan; (Y.-H.C.); (W.-H.C.); (J.-C.Y.); (H.-C.T.)
| | - Wei-Han Chou
- Department of Anesthesiology, National Taiwan University Hospital, Taipei 100, Taiwan; (Y.-H.C.); (W.-H.C.); (J.-C.Y.); (H.-C.T.)
| | - Jr-Chi Yie
- Department of Anesthesiology, National Taiwan University Hospital, Taipei 100, Taiwan; (Y.-H.C.); (W.-H.C.); (J.-C.Y.); (H.-C.T.)
| | - Hsiao-Chun Teng
- Department of Anesthesiology, National Taiwan University Hospital, Taipei 100, Taiwan; (Y.-H.C.); (W.-H.C.); (J.-C.Y.); (H.-C.T.)
| | - Yi-Luen Wu
- Department of Medical Education, National Taiwan University, Taipei 100, Taiwan;
| | - Chun-Yu Wu
- Department of Anesthesiology, National Taiwan University Hospital, Taipei 100, Taiwan; (Y.-H.C.); (W.-H.C.); (J.-C.Y.); (H.-C.T.)
- Correspondence: ; Tel.: +886-2-2356-2158; Fax: +886-2-2341-5736
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The Current Consideration, Approach, and Management in Postcesarean Delivery Pain Control: A Narrative Review. Anesthesiol Res Pract 2021; 2021:2156918. [PMID: 34589125 PMCID: PMC8476264 DOI: 10.1155/2021/2156918] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 09/04/2021] [Indexed: 12/25/2022] Open
Abstract
Optimal postoperative analgesia has a significant impact on patient recovery and outcomes after cesarean delivery. Multimodal analgesia is the core principle for cesarean delivery and pain management. For a standard analgesic regimen, the use of long-acting neuraxial opioids (e.g., morphine) and adjunct drugs, such as scheduled acetaminophen and nonsteroidal anti-inflammatory drugs, is recommended unless contraindicated. Oral or intravenous opioids should be reserved for breakthrough pain. In addition to the aforementioned use of multimodal analgesia, preoperative evaluation is critical to individualize the analgesic regimen according to the patient requirements. Risk factors for severe postoperative pain or analgesia-related adverse effects will require modifications to the standard analgesic regimen (e.g., the use of ketamine, gabapentinoids, or regional anesthetic techniques). Further investigation is required to determine analgesic drugs or dose alterations based on preoperative predictions for patients at risk of severe pain. Outcomes beyond pain and analgesic use, such as functional recovery, should be determined to evaluate analgesic treatment protocols.
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Sato I, Iwasaki H, Luthe SK, Iida T, Kanda H. Comparison of intrathecal morphine with continuous patient-controlled epidural anesthesia versus intrathecal morphine alone for post-cesarean section analgesia: a randomized controlled trial. BMC Anesthesiol 2020; 20:138. [PMID: 32493372 PMCID: PMC7268233 DOI: 10.1186/s12871-020-01050-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 05/24/2020] [Indexed: 12/02/2022] Open
Abstract
Background Several neuraxial techniques have demonstrated effective post-cesarean section analgesia. According to previous reports, it is likely that patient-controlled epidural analgesia (PCEA) without opioids is inferior to intrathecal morphine (IM) alone for post-cesarean section analgesia. However, little is known whether adding PCEA to IM is effective or not. The aim of this study was to compare post-cesarean section analgesia between IM with PCEA and IM alone. Methods Fifty patients undergoing elective cesarean section were enrolled in this prospective randomized study. Patients were randomized to one of two groups: IM group and IM + PCEA group. All patients received spinal anesthesia with 12 mg of 0.5% hyperbaric bupivacaine, 10 μg of fentanyl, and 150 μg of morphine. Patients in IM + PCEA group received epidural catheterization through Th11–12 or Th12-L1 before spinal anesthesia and PCEA (basal 0.167% levobupivacaine infusion rate of 6 mL/h, bolus dose of 3 mL in lockout interval of 30 min) was commenced at the end of surgery. A numerical rating scale (NRS) at rest and on movement at 4,8,12,24,48 h after the intrathecal administration of morphine were recorded. In addition, we recorded the incidence of delayed ambulation and the number of patients who requested rescue analgesics. We examined NRS using Bonferroni’s multiple comparison test following repeated measures analysis of variance; p < 0.05 was considered as statistically significant. Results Twenty-three patients in each group were finally analyzed. Mean NRS at rest was significantly higher in IM group than in IM + PCEA group at 4 (2.7 vs 0.6), 8 (2.2 vs 0.6), and 12 h (2.5 vs 0.7), and NRS during mobilization was significantly higher in IM group than in IM + PCEA group at 4 (4.9 vs 1.5), 8 (4.8 vs 1.9), 12 (4.9 vs 2), and 24 h (5.7 vs 3.5). The number of patients who required rescue analgesics during the first 24 h was significantly higher in IM group compared to IM + PCEA group. No significant difference was observed between the groups in incidence of delayed ambulation. Conclusions The combined use of PCEA with IM provided better post-cesarean section analgesia compared to IM alone. Trial registration UMIN-CTR (Registration No. UMIN000032475). Registered 6 May 2018 – Retrospectively registered.
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Affiliation(s)
- Izumi Sato
- Department of Anesthesiology and Critical Care Medicine, Asahikawa Medical University, Midorigaoka-higashi 2-1-1-1, Asahikawa, Hokkaido, 078-8510, Japan
| | - Hajime Iwasaki
- Department of Anesthesiology and Critical Care Medicine, Asahikawa Medical University, Midorigaoka-higashi 2-1-1-1, Asahikawa, Hokkaido, 078-8510, Japan.
| | - Sarah Kyuragi Luthe
- Department of Anesthesiology and Critical Care Medicine, Asahikawa Medical University, Midorigaoka-higashi 2-1-1-1, Asahikawa, Hokkaido, 078-8510, Japan.,Department of Anesthesiology, Indiana University School of Medicine, 1130 W. Michigan Street, Fesler Hall 204, Indianapolis, IN, 46202, USA
| | - Takafumi Iida
- Department of Anesthesiology and Critical Care Medicine, Asahikawa Medical University, Midorigaoka-higashi 2-1-1-1, Asahikawa, Hokkaido, 078-8510, Japan
| | - Hirotsugu Kanda
- Department of Anesthesiology and Critical Care Medicine, Asahikawa Medical University, Midorigaoka-higashi 2-1-1-1, Asahikawa, Hokkaido, 078-8510, Japan
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Gomez NAG, Warren N, Labko Y, Sinclair DR. Intrathecal Opioid Dosing During Spinal Anesthesia for Cesarean Section: An Integrative Review. J Dr Nurs Pract 2020; 13:108-119. [DOI: 10.1891/jdnp-d-19-00025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Approximately one in three women in the United States deliver via Cesarean section (CS), making it one of the most common surgical procedures in the country. Neuraxial (spinal or epidural) anesthesia is the most effective and common anesthetic approach for pain relief during a CS in the United States and often associated with adverse effects such as nausea, vomiting, and pruritus. While recommended dose ranges exist to protect patient safety, there are a lack of guidelines for opioid doses that both optimize postoperative pain management and minimize side effects. This integrative review synthesizes the evidence regarding best practice of opioid dosing in neuraxial anesthesia for planned CS. Evidence supports the use of lower doses of intrathecal (IT) opioids, specifically 0.1 morphine, to achieve optimal pain management with minimal nausea, vomiting, and pruritus. Lower IT doses have potential to achieve pain management and to alleviate preventable side effects in women delivering via CS.
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Lv M, Zhang P, Wang Z. ED 50 of intrathecal ropivacaine for cesarean delivery with and without epidural volume extension with normal saline: a randomized controlled study. J Pain Res 2018; 11:2791-2796. [PMID: 30519082 PMCID: PMC6235342 DOI: 10.2147/jpr.s174176] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background It was reported that epidural volume extension could decrease the ED50 of intrathecal plain bupivacaine. In this study, we investigated the ED50 of intrathecal hyperbaric ropivacaine followed by epidural normal saline bolus for cesarean section. Methods Sixty parturients were allocated into two groups in this prospective study. About 10 mL of epidural normal saline was given after the intrathecal dose of hyperbaric ropivacaine in the Group S (normal saline group), and no epidural injection of normal saline was given after the intrathecal ropivacainve injection in the Group C (control group). The dose of intrathecal ropivacaine for each parturient was decided by up-down allocation method. The initial dose was set as 10 mg. Effective anesthesia was defined as the level of T6 or above achieved within 10 minutes after intrathecal injection and no additional epidural drug to complete operation. The Massey formula was applied to calculate the ED50 of intrathecal ropivacaine. Results The ED50 of intrathecal ropivacaine for cesarean section determined by up-and-down method was 7.51 mg (95% CI, 7.09–7.93 mg) in the Group S and 8.29 mg (95% CI, 7.73–8.85 mg) in the Group C, and there was a significant difference in ED50 of ropivacaine between the two groups (P<0.05). Compared with the Group C, the ED50 of intrathecal ropivacaine decreased when followed by epidural normal saline bolus. Conclusion The ED50 of intrathecal hyperbaric ropivacaine for cesarean section is 8.29 mg, and it is reduced when followed by epidural normal saline bolus (www.chictr.org.cn, registration number: ChiCTR-ROC-17013382).
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Affiliation(s)
- M Lv
- Department of Obestetrics and Gynecology, Affiliated Women and Children's Hospital of Jiaxing University, Jiaxing, China
| | - P Zhang
- Department of Anesthesiology, Affiliated Women and Children's Hospital of Jiaxing University, Jiaxing, China
| | - Z Wang
- Institute of Clinical Research, Jiaxing university, Jiaxing, China,
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[Recent standards in management of obstetric anesthesia]. Wien Med Wochenschr 2017; 167:374-389. [PMID: 28744777 DOI: 10.1007/s10354-017-0584-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 07/04/2017] [Indexed: 10/19/2022]
Abstract
The following article contains information not only for the clinical working anaesthesiologist, but also for other specialists involved in obstetric affairs. Besides a synopsis of a German translation of the current "Practice Guidelines for Obstetric Anaesthesia 2016" [1], written by the American Society of Anesthesiologists, the authors provide personal information regarding major topics of obstetric anaesthesia including pre-anaesthesia patient evaluation, equipment and staff at the delivery room, use of general anaesthesia, peridural analgesia, spinal anaesthesia, combined spinal-epidural anaesthesia, single shot spinal anaesthesia, and programmed intermittent epidural bolus.
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Gorlin AW, Rosenfeld DM, Maloney J, Wie CS, McGarvey J, Trentman TL. Survey of pain specialists regarding conversion of high-dose intravenous to neuraxial opioids. J Pain Res 2016; 9:693-700. [PMID: 27703394 PMCID: PMC5036565 DOI: 10.2147/jpr.s113216] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The conversion of high-dose intravenous (IV) opioids to an equianalgesic epidural (EP) or intrathecal (IT) dose is a common clinical dilemma for which there is little evidence to guide practice. Expert opinion varies, though a 100 IV:10:EP:1 IT conversion ratio is commonly cited in the literature, especially for morphine. In this study, the authors surveyed 724 pain specialists to elucidate the ratios that respondents apply to convert high-dose IV morphine, hydromorphone, and fentanyl to both EP and IT routes. Eighty-three respondents completed the survey. Conversion ratios were calculated and entered into graphical scatter plots. The data suggest that there is wide variation in how pain specialists convert high-dose IV opioids to EP and IT routes. The 100 IV:10 EP:1 IT ratio was the most common answer of survey respondent, especially for morphine, though also for hydromorphone and fentanyl. Furthermore, more respondents applied a more aggressive conversion strategy for hydromorphone and fentanyl, likely reflecting less spinal selectivity of those opioids compared with morphine. The authors conclude that there is little consensus on this issue and suggest that in the absence of better data, a conservative approach to opioid conversion between IV and neuraxial routes is warranted.
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Affiliation(s)
- Andrew W Gorlin
- Department of Anesthesiology, Mayo Clinic Arizona, Phoenix, AZ, USA
| | | | - Jillian Maloney
- Department of Anesthesiology, Mayo Clinic Arizona, Phoenix, AZ, USA
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Booth JL, Harris LC, Eisenach JC, Pan PH. A Randomized Controlled Trial Comparing Two Multimodal Analgesic Techniques in Patients Predicted to Have Severe Pain After Cesarean Delivery. Anesth Analg 2016; 122:1114-9. [PMID: 25806400 DOI: 10.1213/ane.0000000000000695] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Improved pain control after cesarean delivery remains a challenging objective. Poorly treated acute pain following delivery is associated with an increased risk of chronic pain and depression. This study was conducted to determine whether the addition of systemic acetaminophen and an increased dose of intrathecal morphine would further reduce acute pain. The primary outcome was pain intensity with movement at 24 hours postoperatively. Secondary measures included persistent pain and depression at 8 weeks. METHODS Seventy-four parturients scheduled for elective cesarean delivery under spinal anesthesia that were predicted to be above the 80th percentile for evoked pain intensity based on a 3-item preoperative screening questionnaire were enrolled. Patients in the intervention group received 300 mcg spinal morphine and 1 gram acetaminophen every 6 hours for 24 hours postoperatively. Patients in the control group received 150 mcg spinal morphine and placebo tablets. All patients received scheduled ibuprofen by mouth and IV morphine patient-controlled analgesia. At 24 hours, patients rated their pain intensity with movement, at rest, on average, and worst score using a visual analog scale for pain (100-mm unmarked line). The presence of persistent pain and depression was assessed at 8 weeks using the Edinburgh postpartum depression survey. RESULTS Providing a higher dose of spinal morphine combined with systemic acetaminophen to patients predicted to be at high risk for severe post-cesarean delivery pain significantly reduced evoked pain scores with movement at 24 hours (mean ± SD: 46 ± 25 mm in control group versus 31 ±17 mm in intervention group, P = 0.009; 95% confidence interval for the difference between means: 4 mm, 26 mm). There was no difference in the incidence of persistent pain (13% (4/30) in control group versus 10% (3/30) in intervention group, P > 0.99), or depression at 8 weeks postoperatively (10% (3/30) in control group versus 13% (4/30) in intervention group, P > 0.99). CONCLUSIONS Adding a higher dose of intrathecal morphine and oral acetaminophen to a multimodal pain regimen in patients predicted to be at risk for high acute postpartum pain after cesarean delivery results in a significant reduction of acute postoperative pain scores at 24 hours.
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Affiliation(s)
- Jessica L Booth
- From the Department of Anesthesiology, Wake Forest School of Medicine, Winston-Salem, North Carolina
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Sng BL, Kwok SC, Mathur D, Ithnin F, Newton-Dunn C, Assam PN, Sultana R, Sia ATH. Comparison of epidural oxycodone and epidural morphine for post-caesarean section analgesia: A randomised controlled trial. Indian J Anaesth 2016; 60:187-93. [PMID: 27053782 PMCID: PMC4800935 DOI: 10.4103/0019-5049.177877] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background and Aims: Epidural morphine after caesarean section may cause moderate to severe pruritus in women. Epidural oxycodone has been shown in non-obstetric trials to reduce pruritus when compared to morphine. We hypothesised that epidural oxycodone may reduce pruritus after caesarean section. Methods: A randomised controlled trial was conducted in pregnant women at term who underwent caesarean section with combined spinal-epidural technique initiated with intrathecal fentanyl 15 μg. Women received either epidural morphine 3 mg or epidural oxycodone 3 mg via the epidural catheter after delivery. The primary outcome was the incidence of pruritus at 24 h after caesarean section. The secondary outcomes were the pruritus scores, treatment for post-operative nausea and vomiting (PONV), pain scores and maternal satisfaction. Results: One hundred women were randomised (group oxycodone O = 50, morphine M = 50). There was no difference between Group O and M in the incidence of pruritus (n [%] 28 [56%] vs. 31 [62%], P = 0.68) and the worst pruritus scores (mean [standard deviation] 2.6 (2.8) vs. 3.3 [3.1], P = 0.23), respectively. Both groups had similar pain scores at rest (2.7 [2.3] vs. 2.0 [2.7], P = 0.16) and sitting up (5.0 [2.3] vs. 4.6 [2.4], P = 0.38) at 24 h. Pruritus scores were lower at 4–8, 8–12 and 12–24 h with oxycodone, but pain scores were higher. Both groups had a similar need for treatment of PONV and maternal satisfaction with analgesia. Conclusion: There was no difference in the incidence of pruritus at 24 h between epidural oxycodone and morphine. However, pruritus scores were lower with oxycodone between 4 and 24 h after surgery with higher pain scores in the same period.
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Affiliation(s)
- Ban Leong Sng
- Department of Women's Anaesthesia, KK Women's and Children's Hospital, Bukit Timah, Singapore
| | - Sarah Carol Kwok
- Department of Women's Anaesthesia, KK Women's and Children's Hospital, Bukit Timah, Singapore
| | - Deepak Mathur
- Department of Women's Anaesthesia, KK Women's and Children's Hospital, Bukit Timah, Singapore
| | - Farida Ithnin
- Department of Women's Anaesthesia, KK Women's and Children's Hospital, Bukit Timah, Singapore
| | - Clare Newton-Dunn
- Department of Women's Anaesthesia, KK Women's and Children's Hospital, Bukit Timah, Singapore
| | | | - Rehena Sultana
- Centre for Quantitative Medicine, Duke-NUS Graduate Medical School, Singapore
| | - Alex Tiong Heng Sia
- Department of Women's Anaesthesia, KK Women's and Children's Hospital, Bukit Timah, Singapore
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Patient-controlled epidural levobupivacaine with or without fentanyl for post-cesarean section pain relief. BIOMED RESEARCH INTERNATIONAL 2014; 2014:965152. [PMID: 24982917 PMCID: PMC4055260 DOI: 10.1155/2014/965152] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Accepted: 05/07/2014] [Indexed: 11/17/2022]
Abstract
PURPOSE The purpose of this study was to compare the analgesic properties of levobupivacaine with or without fentanyl for patient-controlled epidural analgesia after Cesarean section in a randomized, double-blinded study. METHODS We enrolled American Society of Anesthesiologists class I/II, full-term pregnant women at National Taiwan University Hospital who received patient-controlled epidural analgesia after Cesarean section between 2009 and 2010. Eighty women were randomly assigned into two groups. In group A, the 40 subjects received drug solutions made of 0.6 mg/ml levobupivacaine plus 2 mcg/ml fentanyl, and in group B the 40 subjects received 1 mg/ml levobupivacaine. Maintenance was self-administered boluses and a continuous background infusion. RESULTS There were no significant differences in the resting and dynamic pain scales and total volume of drug used between the two groups. Patient satisfaction was good in both groups. CONCLUSION Our study showed that pure epidural levobupivacaine can provide comparative analgesic properties to the levobupivacaine-fentanyl combination after Cesarean section. Pure levobupivacaine may serve as an alternative pain control regimen to avoid opioid-related adverse events in parturients.
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Dose-dependent attenuation of intravenous nalbuphine on epidural morphine-induced pruritus and analgesia after cesarean delivery. Kaohsiung J Med Sci 2014; 30:248-53. [DOI: 10.1016/j.kjms.2014.01.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 10/17/2013] [Indexed: 11/18/2022] Open
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Rüveyda Irem Demircioglu, Usta B, Muslu B, Sert H, Okano Y, Onodera K, Gozdemir M. Combination of Small Doses of Subarachnoid Morphine with Systemic Diclofenac Improves Analgesia During 48 hours after Cesarean Delivery. J HARD TISSUE BIOL 2010. [DOI: 10.2485/jhtb.19.117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Sarvela PJ, Halonen PM, Soikkeli AI, Kainu JP, Korttila KT. Ondansetron and tropisetron do not prevent intraspinal morphine- and fentanyl-induced pruritus in elective cesarean delivery. Acta Anaesthesiol Scand 2006; 50:239-44. [PMID: 16430549 DOI: 10.1111/j.1399-6576.2006.00934.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Although intraspinal morphine has been shown to be effective in providing analgesia after cesarean delivery, pruritus as a side-effect remains a common cause of dissatisfaction. The role of ondansetron has been studied in preventing pruritus but the results have been contradictory. METHODS We randomized 98 parturients undergoing elective cesarean section using combined spinal-epidural anesthesia into a double-blinded trial to receive tropisetron 5 mg (T group) or ondansetron 8 mg (O group) or placebo (NaCl group) after delivery, when intrathecal morphine 160 microg and fentanyl 15 microg were used for post-operative pain control. The patients additionally received ketoprofen 300 mg per day. Post-operative itching, nausea and vomiting, sedation and need for rescue analgesics were registered every 3 h up to 24 h, and all patients were interviewed on the first post-operative day. RESULTS Seventy-six percent of the parturients in the placebo group, 87% in the ondansetron, and 79% in the tropisetron group had itching. The incidence of post-operative nausea and vomiting was 21%, 20% and 11% of the patients in the placebo, ondansetron and tropisetron groups, respectively. Medication for pruritus was needed by 31%, 23% and 39% of the patients in the placebo, ondansetron and tropisetron groups, respectively. In the post-operative questionnaire, the patients reported less post-operative nausea in the tropisetron group than in the placebo group (P < 0.01). CONCLUSION Neither ondansetron nor tropisetron prevent itching caused by intrathecal morphine with fentanyl. However, tropisetron reduced post-operative nausea.
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Affiliation(s)
- P J Sarvela
- Department of Anaesthesia and Intensive Care, Helsinki University Central Hospital, Helsinki, Finland.
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Hui CK, Huang CH, Lin CJ, Lau HP, Chan WH, Yeh HM. A randomised double-blind controlled study evaluating the hypothermic effect of 150 mug morphine during spinal anaesthesia for Caesarean section. Anaesthesia 2006; 61:29-31. [PMID: 16409339 DOI: 10.1111/j.1365-2044.2005.04466.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We studied the hypothermic effect of adding 150 microg morphine during spinal anaesthesia in 60 parturients scheduled for elective caesarean section. All the parturients received intrathecal injection of a solution containing 150 mug morphine or normal saline in addition to 10-12 mg hyperbaric bupivacaine 0.5%. In both groups, a significant decrease in body temperature was noted. There was no difference in the area under the curve for temperature against time for the two groups; however, the maximum decrease in temperature from baseline was significantly larger after morphine than after saline injection (mean (SD) 1.11 (0.61) degrees C vs 0.76 (0.39) degrees C, respectively; p = 0.01) and the time to nadir temperature was significantly longer (59.5 (17.6) min vs 50.4 (15.9) min, respectively; p = 0.047). The lowest temperature observed in the morphine group was 34.3 degrees C. We conclude that intrathecal injection of 150 microg morphine intensified the intra-operative hypothermic effect of bupivacaine spinal anaesthesia for caesarean section.
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Affiliation(s)
- C-K Hui
- Department of Anaesthesiology, National Taiwan University Hospital, Taipei, Taiwan
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