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Ran J, Lu F, Xu L, Du Y, Liu L, Qi T, Zhou X, Zhang Y, Liu D, Wang R, Li X. Efficacy of ganglion impar block combined with pudendal nerve pulsed radiofrequency for pudendal neuralgia management-a randomized clinical trial. Trials 2024; 25:316. [PMID: 38741220 DOI: 10.1186/s13063-024-08152-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Accepted: 05/07/2024] [Indexed: 05/16/2024] Open
Abstract
BACKGROUND Pudendal neuralgia is a chronic and debilitating condition. Its prevalence ranges from 5 to 26%. Currently, therapeutic approaches to treat pudendal neuralgia include patient education, medication management, psychological and physical therapy, and procedural interventions, such as nerve block, trigger point injections, and surgery. Drug therapy has a limited effect on pain relief. A pudendal nerve block may cause a significant decrease in pain scores for a short time; however, its efficacy significantly decreases over time. In contrast, pudendal nerve pulsed radiofrequency can provide pain relief for 3 months, and ganglion impar block has been widely used for treating chronic perineal pain and chronic coccygodynia. This study aimed to determine the efficacy and safety of monotherapy (pudendal nerve pulsed radiofrequency) and combination therapy (pudendal nerve pulsed radiofrequency plus ganglion impar block) in patients with pudendal neuralgia. METHODS This randomized, controlled clinical trial will include 84 patients with pudendal neuralgia who failed to respond to drug or physical therapy. Patients will be randomly assigned into one of the two groups: mono or combined treatment groups. The primary outcome will be a change in pain intensity measured using the visual analog scale. The secondary outcomes will include a Self-Rating Anxiety Scale score, Self-Rating Depression Scale score, the use of oral analgesics, the Medical Outcomes Study Health Survey Short Form-36 Item score, and the occurrence of adverse effects. The study results will be analyzed using intention-to-treat and per-protocol analyses. Primary and secondary outcomes will be evaluated between the mono and combined treatment groups. Subgroup analyses will be conducted based on the initial ailment, age, and baseline pain intensity. The safety of the treatment will be assessed by monitoring adverse events, which will be compared between the two groups. DISCUSSION This study protocol describes a randomized, controlled clinical trial to determine the efficacy and safety of mono and combination therapies in patients with pudendal neuralgia. The study results will provide valuable information on the potential benefits of this combination therapy and contribute to the development of more effective and safer treatments for patients with pudendal neuralgia. TRIAL REGISTRATION Chinese Clinical Trial Registry (ChiCTR2200061800).
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Affiliation(s)
- Jiao Ran
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
| | - Fan Lu
- Department of Pain Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Le Xu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
| | - Yu Du
- Department of Anesthesiology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, No. 32, West Section 2, 1St Ring Road, Qingyang District, Chengdu City, Sichuan Province, China
| | - Li Liu
- Sichuan Science City Hospital, No. 64 Mianshan Road, Youxian District, Mianyang City, Sichuan Province, China
| | - Tao Qi
- Department of Pain Management, The Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, No. 39, 12 Qiao Road, Jinniu District, Chengdu, China
| | - Xiaoli Zhou
- No.903 Hospital, the Affiliated Hospital of Chengdu Medical College, No. 9 Huafeng New Village, Middle Section of Taiping Road, Jiangyou City, Mianyang City, China
| | - Yulin Zhang
- Department of Pain Management, The Second Clinical College of North Sichuan Medical College, Nanchong Central Hospital (Beijing Anzhen Hospital Nanchong Hospital), No. 97, Renmin South Road, Shunqing District, Nanchong, 637000, Sichuan, China
| | - Dong Liu
- Department of Pain Management, Chengdu Second People's Hospital, No. 10 Qingyunnan Street, Jinjiang District, Chengdu, China
| | - Rurong Wang
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China.
| | - Xuehan Li
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China.
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Liang Y, Zhong S, Wang H, Wu D, Gong Q. Comparisons of the analgesic effect of different pulsed radiofrequency targets in SNI-induced neuropathic pain. Neuroreport 2023; 34:720-727. [PMID: 37577901 DOI: 10.1097/wnr.0000000000001946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
An injury of the peripheral nerve may lead to neuropathic pain, which could be treated with pulsed radiofrequency to the dorsal root ganglion (DRG) or peripheral nerve [the nerve trunk (NT) or proximal to the injury site (NI)]. However, it is not clear whether there is any difference in analgesic effect or maintenance among the three targets. PRF was applied to the ipsilateral L5 DRG, peripheral nerve (NT or NI) 5 days after spared nerve injury (SNI). Triptolide (10 µg/kg) or vehicle was intrathecally administered 5 days after SNI for 3 days. Mechanical withdrawal thresholds were tested after treatment at different time points. Furthermore, microglia and the P2X7 receptor (P2X7R) in the ipsilateral spinal cord were measured with immunofluorescence and western blotting, respectively. PRF + NI exerted a more remarkable analgesic effect than PRF + DRG and PRF + NT at the early stage, but PRF + DRG had a stronger analgesic effect than PRF + NI and PRF + NT at the end of our study. In addition, PRF + DRG showed no significant difference from intrathecal administration of triptolide. Moreover, SNI-induced microglia activation and upregulation of P2X7R in spinal dorsal horn could be markedly inhibited by PRF + DRG. The results suggest that the analgesic effect of PRF + DRG increased with time whereas the other two not and microglia and P2X7R in the ipsilateral spinal dorsal horn may be involved in the process.
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Affiliation(s)
- Ying Liang
- Department of Pain Medicine, The Second Affiliated Hospital of Guangzhou Medical University
- Department of Anesthesiology, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong Province
| | - Shuotao Zhong
- Department of Pain Medicine, The Second Affiliated Hospital of Guangzhou Medical University
| | - Honghua Wang
- Department of Anesthesiology and Perioperative Medicine, The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, Jiangsu Province, China
| | - Danlei Wu
- Department of Pain Medicine, The Second Affiliated Hospital of Guangzhou Medical University
| | - Qingjuan Gong
- Department of Pain Medicine, The Second Affiliated Hospital of Guangzhou Medical University
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Zhu D, Fan Z, Cheng F, Li Y, Huo X, Cui J. The Efficacy of an Ultrasound-Guided Improved Puncture Path Technique of Nerve Block/Pulsed Radiofrequency for Pudendal Neuralgia: A Retrospective Study. Brain Sci 2022; 12:brainsci12040510. [PMID: 35448041 PMCID: PMC9031648 DOI: 10.3390/brainsci12040510] [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: 03/10/2022] [Revised: 04/06/2022] [Accepted: 04/11/2022] [Indexed: 02/01/2023] Open
Abstract
Objectives: To investigate the efficacy and safety of an improved ultrasound-guided pulsed radiofrequency (PRF) and nerve block (NB) for patients with pudendal neuralgia (PN). Methods: This retrospective analysis included 88 adults with PN treated in the Pain Department of Southwest Hospital from November 2011 to June 2021, with treatment including NB (n = 40) and PRF (n = 48). The primary outcome variable was pain severity, measured by a standardized visual analog scale (VAS). VAS values were collected at 1, 3, 7, and 14 days and 1 and 3 months after patients were treated with NB or PRF. Results: Compared with patients treated with NB (n = 40) and those treated with PRF (n = 48), no significant difference in pain reduction was observed in the short term (p = 0.739 and 0.981, at 1 and 3 days, respectively); however, in the medium and long term (1 to 3 months), there were statistically significant improvements in the PRF group over the NB group (p < 0.001). Moreover, it was noted that the average pain severity of primary PN and PN due to sacral perineurial cyst was significantly reduced with PRF therapy in the medium and long term when compared to other secondary PNs, including surgery, trauma, and diabetes. Discussion: The ultrasound-guided, improved, and innovative PRF/NB puncture path technique allows for gentler stimulation and faster identification of the pudendal nerve. The PRF technique may provide better treatments for primary PN and sacral perineurial cyst causing secondary PN in the medium and long term.
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Affiliation(s)
- Dan Zhu
- Department of Pain Medicine, Southwest Hospital, Army Medical University, Chongqing 400038, China; (D.Z.); (Z.F.); (F.C.); (Y.L.)
| | - Zhenzhen Fan
- Department of Pain Medicine, Southwest Hospital, Army Medical University, Chongqing 400038, China; (D.Z.); (Z.F.); (F.C.); (Y.L.)
| | - Fujun Cheng
- Department of Pain Medicine, Southwest Hospital, Army Medical University, Chongqing 400038, China; (D.Z.); (Z.F.); (F.C.); (Y.L.)
| | - Yuping Li
- Department of Pain Medicine, Southwest Hospital, Army Medical University, Chongqing 400038, China; (D.Z.); (Z.F.); (F.C.); (Y.L.)
| | - Xingyue Huo
- Department of Population Science and Health Policy, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Correspondence: (X.H.); (J.C.); Tel.: +1-470-4953699 (X.H.); +86-13883788139 (J.C.)
| | - Jian Cui
- Department of Pain Medicine, Southwest Hospital, Army Medical University, Chongqing 400038, China; (D.Z.); (Z.F.); (F.C.); (Y.L.)
- Correspondence: (X.H.); (J.C.); Tel.: +1-470-4953699 (X.H.); +86-13883788139 (J.C.)
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A physiatrist's understanding and application of the current literature on chronic pelvic pain: a narrative review. Pain Rep 2021; 6:e949. [PMID: 34476302 PMCID: PMC8407606 DOI: 10.1097/pr9.0000000000000949] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 05/12/2021] [Accepted: 06/09/2021] [Indexed: 12/30/2022] Open
Abstract
Understanding the complex, multifactorial nature of chronic pelvic pain can help physicians determine the pain's etiology and thus refer specialists to include in the multidisciplinary treatment required. Chronic pelvic pain (CPP) is a highly prevalent condition which is underdiagnosed and poorly understood. The purpose of this review is to outline the various aspects of the nature of CPP, including its etiologies, clinical presentation, and nonoperative treatment options. For data collection, a PubMed search was conducted using indexing terms such as chronic pelvic pain and pelvic pain. Literature reviews and studies focusing on etiologies, clinical presentation, and/or the diagnosis of CPP were compiled for review by a team of 3 physiatrists. Studies investigating conservative treatments, medications, and interventional procedures for CPP and related conditions with comparable etiologies were also included. Of the 502 articles retrieved, 116 were deemed suitable by the team for this study. Although CPP is a complex, multifaceted condition, a particular susceptibility to nociceptive stimuli was demonstrated as an underlying theme in its evolution. There are many treatment options currently used; however, more robust evidence, such as randomized controlled trials, are needed before creating comprehensive guidelines for treating CPP.
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Ji F, Zhou S, Li C, Zhang Y, Xu H. Therapeutic Efficacy of Ultrasound-Guided High-Voltage Long-Duration Pulsed Radiofrequency for Pudendal Neuralgia. Neural Plast 2021; 2021:9961145. [PMID: 34373690 PMCID: PMC8349273 DOI: 10.1155/2021/9961145] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 06/14/2021] [Accepted: 07/17/2021] [Indexed: 12/19/2022] Open
Abstract
Pudendal neuralgia (PN) is a complex disease with various clinical characteristics, and there is no treatment showing definite effectiveness. This study is aimed at evaluating the clinical efficacy of ultrasound-guided high-voltage long-duration pulsed radiofrequency (PRF) for PN. Two cadavers (one male, one female) were dissected to provide evidence for localization of the pudendal nerve. Patients diagnosed as PN who failed or were intolerant in regular medication were screened for diagnostic local anesthesia block of the pudendal nerve before recruitment. Twenty PN patients were enrolled in this study. In the PRF procedure, the needle tip was inserted medially into the internal pudendal artery under ultrasound guidance. The position of the PRF needle tip was then adjusted by the response of the pudendal nerve to the electrical stimulation within the pudendal area (42°C, a series of 2 Hz, and 20 ms width pulses that lasted for 900 s). Alleviation of pain was assessed by the visual analogue scale (VAS) and sitting time pretreatment and on 7 d, 14 d, 1 m, 2 m, 3 m, and 6 m posttreatment in outpatient follow-up or by telephone interview. Two patients were lost due to intervention-irrelevant reasons. Patients showed significantly decreased VAS scores on 7 d after RFP, compared with pretreatment status (7.0 ± 0.9 vs. 3.2 ± 1.7, P < 0.001). The efficacy remained steady till the end of 6 months, with a final remission rate of 88.9%. Sitting time also significantly lengthened following PRF (7 d, 14 d, 1 m, 2 m, 3 m, and 6 m vs. pretreatment, all P < 0.05). Only short-term ipsilateral involuntary convulsion of the lower extremity was reported in one patient, who recovered within 12 h. Six patients were treated with nonsteroidal drugs for a short time. All patients stopped taking medication finally. In conclusion, the ultrasound-guided high-voltage long-duration PRF approach not only reduced the pelvic pain caused by PN but also improved the quality of life by extending sitting time without nerve injury.
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Affiliation(s)
- Feng Ji
- Department of Anesthesiology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Shuzhuan Zhou
- Department of Anesthesiology, Marine Corps Hospital of PLA, Chaozhou 521000, Guangdong Province, China
| | - Caixia Li
- Department of Anesthesiology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Yongyan Zhang
- Department of Anesthesiology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Hua Xu
- Department of Anesthesiology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
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Matičič UB, Šumak R, Omejec G, Salapura V, Snoj Ž. Ultrasound-guided injections in pelvic entrapment neuropathies. J Ultrason 2021; 21:e139-e146. [PMID: 34258039 PMCID: PMC8264816 DOI: 10.15557/jou.2021.0023] [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: 02/20/2021] [Accepted: 04/09/2021] [Indexed: 11/22/2022] Open
Abstract
Pelvic entrapment neuropathies represent a group of chronic pain syndromes that significantly impede the quality of life. Peripheral nerve entrapment occurs at specific anatomic locations. There are several causes of pelvic entrapment neuropathies, such as intrinsic nerve abnormality or inflammation with scarring of surrounding tissues, and surgical interventions in the abdomen, pelvis and the lower limbs. Entrapment neuropathies in the pelvic region are not widely recognized, and still tend to be underdiagnosed due to numerous differential diagnoses with overlapping symptoms. However, it is important that entrapment neuropathies are correctly diagnosed, as they can be successfully treated. The lateral femoral cutaneous nerve, ischiadic nerve, genitofemoral nerve, pudendal nerve, ilioinguinal nerve and obturator nerve are the nerves most frequently causing entrapment neuropathies in the pelvic region. Understanding the anatomy as well as nerve motor and sensory functions is essential in recognizing and locating nerve entrapment. The cornerstone of the diagnostic work-up is careful physical examination. Different imaging modalities play an important role in the diagnostic process. Ultrasound is a key modality in the diagnostic work-up of pelvic entraptment neuropathies, and its use has become increasingly widespread in therapeutic procedures. In the article, the authors describe the background of pelvic entrapment neuropathies with special focus on ultrasound-guided injections.
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Affiliation(s)
- Urša Burica Matičič
- Faculty of Medicine, University of Ljubljana, Vrazov trg 2, Ljubljana, Slovenia
| | - Rok Šumak
- Department of General Gynaecology and Urogynaecology, Clinic for Gynaecology and Perinatology, University Medical Centre Maribor, Maribor, Slovenia
| | - Gregor Omejec
- Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, Zaloška 7, Ljubljana, Slovenia
| | - Vladka Salapura
- Radiology Institute, University Medical Centre Ljubljana, Zaloška 7, Ljubljana, Slovenia
| | - Žiga Snoj
- Radiology Institute, University Medical Centre Ljubljana, Zaloška 7, Ljubljana, Slovenia
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Comparison of Ultrasound-Guided Transgluteal and Finger-Guided Transvaginal Pudendal Nerve Block Techniques: Which One is More Effective? Int Neurourol J 2019; 23:310-320. [PMID: 31905278 PMCID: PMC6944786 DOI: 10.5213/inj.1938112.056] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Accepted: 01/03/2019] [Indexed: 12/30/2022] Open
Abstract
Purpose Pudendal neuralgia (PN) is a painful and disabling condition, which reduces the quality of life as well. Pudendal nerve infiltrations are essential for the diagnosis and the management of PN. The purpose of this study was to compare the effectiveness of finger-guided transvaginal pudendal nerve infiltration (TV-PNI) technique and the ultrasound-guided transgluteal pudendal nerve infiltration (TG-PNI) technique. Methods Forty patients who underwent PNI for the diagnosis of PN were evaluated. Thirty-five of these 40 patients, who were diagnosed as PN, underwent a total of 70 further unilateral PNI. All the patients underwent PNI for twice after the first diagnostic PNI, 1 week apart. Results In the ultrasound (US)-guided TG-PNI group, the success rate was 68.8% (11 of 16) in both “pain in the sitting position” and “pain in the region from the anus to the clitoris.” The success rate of blocks in the US-guided TG-PNI group was 75% (12 of 16) in terms of pain during/after intercourse. In the finger-guided TV-PNI group, the success rate was 84.2% in both “pain in the sitting position” and “pain in the region from the anus to the clitoris.” The success rate of blocks in the fingerguided TV-PNI group was 89.5% (17 of 19) in terms of pain during/after intercourse. There was no statistically significant difference in the success rate of the 3 assessed conditions between the 2 groups (P>0.05). Conclusions The TV-PNI may be an alternative to US-guidance technique as a safe, simple, effective approach in pudendal nerve blocks.
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The Use of Pulsed Radiofrequency for the Treatment of Pudendal Neuralgia: A Case Series. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2019; 41:1558-1563. [DOI: 10.1016/j.jogc.2019.01.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Revised: 12/23/2018] [Accepted: 01/02/2019] [Indexed: 11/17/2022]
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Silverman JE, Gulati A. An overview of interventional strategies for the management of oncologic pain. Pain Manag 2018; 8:389-403. [PMID: 30320541 DOI: 10.2217/pmt-2018-0022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Pain is a ubiquitous part of the cancer experience. Often the presenting symptom of malignancy, pain becomes more prevalent in advanced or metastatic disease and often persists despite curative treatment. Although management of cancer pain improved following publication of the WHO's analgesic ladder, when used in isolation, conservative approaches often fail to control pain and are limited by intolerable side effects. Interventional strategies provide an option for managing cancer pain that remains refractory to pharmacologic therapy. The purpose of this review is to investigate these strategies and discuss the risks and benefits which must be weighed when considering their use. Therapies anticipated to have an increasingly important role in the future of cancer pain management are also discussed.
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Affiliation(s)
- Jonathan E Silverman
- Department of Anesthesiology and Critical Care, Memorial Sloan Kettering Cancer Center, New York, NY 100652, USA.,Department of Anesthesiology, New York Presbyterian Hospital-Weill Cornell Medical Center, New York, NY 10065, USA
| | - Amitabh Gulati
- Department of Anesthesiology and Critical Care, Memorial Sloan Kettering Cancer Center, New York, NY 100652, USA
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