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Granata G, Di Iorio R, Ilari S, Angeloni BM, Tomasello F, Cimmino AT, Carrarini C, Marrone A, Iodice F. Phantom limb syndrome: from pathogenesis to treatment. A narrative review. Neurol Sci 2024:10.1007/s10072-024-07634-1. [PMID: 38853232 DOI: 10.1007/s10072-024-07634-1] [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: 11/24/2023] [Accepted: 06/04/2024] [Indexed: 06/11/2024]
Abstract
Phantom Limb Syndrome (PLS) can be defined as the disabling or painful sensation of the presence of a body part that is no longer present after its amputation. Anatomical changes involved in Phantom Limb Syndrome, occurring at peripheral, spinal and brain levels and include the formation of neuromas and scars, dorsal horn sensitization and plasticity, short-term and long-term modifications at molecular and topographical levels. The molecular reorganization processes of Phantom Limb Syndrome include NMDA receptors hyperactivation in the dorsal horn of the spinal column leading to inflammatory mechanisms both at a peripheral and central level. At the brain level, a central role has been recognized for sodium channels, BDNF and adenosine triphosphate receptors. In the paper we discuss current available pharmacological options with a final overview on non-pharmacological options in the pipeline.
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Affiliation(s)
- Giuseppe Granata
- Institute of Neurology, Fondazione Policlinico Gemelli IRCCS, Rome, Italy
| | - Riccardo Di Iorio
- Institute of Neurology, Fondazione Policlinico Gemelli IRCCS, Rome, Italy
| | - Sara Ilari
- Laboratory of Physiology and Pharmacology of Pain, IRCCS San Raffaele, Rome, Italy
| | | | - Fabiola Tomasello
- Department of Neuroscience, Catholic University of the Sacred Heart, Rome, Italy
| | | | - Claudia Carrarini
- Department of Neuroscience, Catholic University of the Sacred Heart, Rome, Italy
- Institute of Neurology and Neurorehabilitation, IRCCS San Raffaele, Via Della Pisana 235, 00160, Rome, Italy
| | - Antonio Marrone
- Institute of Neurology and Neurorehabilitation, IRCCS San Raffaele, Via Della Pisana 235, 00160, Rome, Italy
| | - Francesco Iodice
- Institute of Neurology and Neurorehabilitation, IRCCS San Raffaele, Via Della Pisana 235, 00160, Rome, Italy.
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2
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Willis DE, Goldstein PA. Targeting Affective Mood Disorders With Ketamine to Prevent Chronic Postsurgical Pain. FRONTIERS IN PAIN RESEARCH 2022; 3:872696. [PMID: 35832728 PMCID: PMC9271565 DOI: 10.3389/fpain.2022.872696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 06/06/2022] [Indexed: 12/02/2022] Open
Abstract
The phencyclidine-derivative ketamine [2-(2-chlorophenyl)-2-(methylamino)cyclohexan-1-one] was added to the World Health Organization's Model List of Essential Medicines in 1985 and is also on the Model List of Essential Medicines for Children due to its efficacy and safety as an intravenous anesthetic. In sub-anesthetic doses, ketamine is an effective analgesic for the treatment of acute pain (such as may occur in the perioperative setting). Additionally, ketamine may have efficacy in relieving some forms of chronic pain. In 2019, Janssen Pharmaceuticals received regulatory-approval in both the United States and Europe for use of the S-enantiomer of ketamine in adults living with treatment-resistant major depressive disorder. Pre-existing anxiety/depression and the severity of postoperative pain are risk factors for development of chronic postsurgical pain. An important question is whether short-term administration of ketamine can prevent the conversion of acute postsurgical pain to chronic postsurgical pain. Here, we have reviewed ketamine's effects on the biopsychological processes underlying pain perception and affective mood disorders, focusing on non-NMDA receptor-mediated effects, with an emphasis on results from human trials where available.
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Affiliation(s)
- Dianna E. Willis
- Burke Neurological Institute, White Plains, NY, United States
- Feil Family Brain and Mind Institute, Weill Cornell Medicine, New York, NY, United States
| | - Peter A. Goldstein
- Feil Family Brain and Mind Institute, Weill Cornell Medicine, New York, NY, United States
- Department of Anesthesiology, Weill Cornell Medicine, New York, NY, United States
- Department of Medicine, Weill Cornell Medicine, New York, NY, United States
- *Correspondence: Peter A. Goldstein
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3
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Illias AM, Yu KJ, Hwang SH, Solis J, Zhang H, Velasquez JF, Cata JP, Dougherty PM. Dorsal root ganglion toll-like receptor 4 signaling contributes to oxaliplatin-induced peripheral neuropathy. Pain 2022; 163:923-935. [PMID: 34490849 DOI: 10.1097/j.pain.0000000000002454] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 08/10/2021] [Indexed: 11/26/2022]
Abstract
ABSTRACT Activation of toll-like receptor 4 (TLR4) in the dorsal root ganglion (DRG) and spinal cord contributes to the generation of paclitaxel-related chemotherapy-induced peripheral neuropathy (CIPN). Generalizability of TLR4 signaling in oxaliplatin-induced CIPN was tested here. Mechanical hypersensitivity developed in male SD rats by day 1 after oxaliplatin treatment, reached maximum intensity by day 14, and persisted through day 35. Western blot revealed an increase in TLR4 expression in the DRG of oxaliplatin at days 1 and 7 after oxaliplatin treatment. Cotreatment of rats with the TLR4 antagonist lipopolysaccharide derived from Rhodobacter sphaeroides ultrapure or with the nonspecific immunosuppressive minocycline with oxaliplatin resulted in significantly attenuated hyperalgesia on day 7 and 14 compared with rats that received oxaliplatin plus saline vehicle. Immunostaining of DRGs revealed an increase in the number of neurons expressing TLR4, its canonical downstream signal molecules myeloid differentiation primary response gene 88 (MyD88) and TIR-domain-containing adapter-inducing interferon-β, at both day 7 and day 14 after oxaliplatin treatment. These increases were blocked by cotreatment with either lipopolysaccharide derived from Rhodobacter sphaeroides or minocycline. Double staining showed the localization of TLR4, MyD88, and TIR-domain-containing adapter-inducing interferon-β in subsets of DRG neurons. Finally, there was no significant difference in oxaliplatin-induced mechanical hypersensitivity between male and female rats when observed for 2 weeks. Furthermore, upregulation of TLR4 was detected in both sexes when tested 14 days after treatment with oxaliplatin. These findings suggest that the activation of TLR4 signaling in DRG neurons is a common mechanism in CIPN induced by multiple cancer chemotherapy agents.
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Affiliation(s)
- Amina M Illias
- Department of Anesthesiology and Pain Medicine, The University of Texas M.D. Anderson Cancer Center, Houston, TX, United States
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Kai-Jie Yu
- Department of Urology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Seon-Hee Hwang
- Department of Anesthesiology and Pain Medicine, The University of Texas M.D. Anderson Cancer Center, Houston, TX, United States
| | - Jacob Solis
- Department of Anesthesiology and Pain Medicine, The University of Texas M.D. Anderson Cancer Center, Houston, TX, United States
| | - Hongmei Zhang
- Department of Anesthesiology and Pain Medicine, The University of Texas M.D. Anderson Cancer Center, Houston, TX, United States
| | - Jose F Velasquez
- Department of Anesthesiology and Perioperative Medicine, The University of Texas M.D. Anderson Cancer Center, Houston, TX, United States
| | - Juan P Cata
- Department of Anesthesiology and Perioperative Medicine, The University of Texas M.D. Anderson Cancer Center, Houston, TX, United States
| | - Patrick M Dougherty
- Department of Anesthesiology and Pain Medicine, The University of Texas M.D. Anderson Cancer Center, Houston, TX, United States
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Richards JT, Baird MD, Tintle SM, Souza JM, Renninger CH, Potter BK. Peripheral Nerve Management in Extremity Amputations. Orthop Clin North Am 2022; 53:155-166. [PMID: 35365260 DOI: 10.1016/j.ocl.2022.01.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The effective management of peripheral nerves in amputation surgery is critical to optimizing patient outcomes. Nerve-related pain after amputation is common, maybe a source of dissatisfaction and functional impairment, and should be considered in all amputees presenting with pain and dysfunction. While traction neurectomy or transposition has long been the standard of care, both regenerative peripheral nerve interface (RPNI) and targeted muscle reinnervation (TMR) have emerged as promising techniques to improve neuroma-related and phantom pain. A multi-disciplinary and multi-modal approach is essential for the optimal management of amputees both acutely and in the delayed or chronic setting.
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Affiliation(s)
- John T Richards
- Department of Orthopaedic Surgery, Uniformed Services University-Walter Reed Department of Surgery, Walter Reed National Military Medical Center, Bethesda, MD, USA; Department of Orthopaedics, R Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, MD, USA.
| | - Michael D Baird
- Department of Orthopaedic Surgery, Uniformed Services University-Walter Reed Department of Surgery, Walter Reed National Military Medical Center, Bethesda, MD, USA
| | - Scott M Tintle
- Department of Orthopaedic Surgery, Uniformed Services University-Walter Reed Department of Surgery, Walter Reed National Military Medical Center, Bethesda, MD, USA
| | - Jason M Souza
- Department of Plastic and Reconstructive Surgery, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Christopher H Renninger
- Department of Orthopaedic Surgery, Uniformed Services University-Walter Reed Department of Surgery, Walter Reed National Military Medical Center, Bethesda, MD, USA; Department of Orthopaedics, R Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Benjamin K Potter
- Department of Orthopaedic Surgery, Uniformed Services University-Walter Reed Department of Surgery, Walter Reed National Military Medical Center, Bethesda, MD, USA
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5
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Klinisches Update zu Phantomschmerz. Schmerz 2022; 37:195-214. [DOI: 10.1007/s00482-022-00629-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2022] [Indexed: 10/18/2022]
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Voute M, Riant T, Amodéo J, André G, Barmaki M, Collard O, Colomb C, Créac’h C, Deleens R, Delorme C, Montgazon G, Dixneuf V, Dy L, Gaillard J, Gov C, Kieffer X, Lanteri‐Minet M, Le Borgne J, Le Caër F, Maamar F, Maindet C, Marcaillou F, Plantevin F, Pluchon Y, Rioult B, Rostaing S, Salvat E, Sep Hieng V, Sorel M, Vergne‐Salle P, Morel V, Chazeron I, Pickering G. Ketamine in chronic pain: a Delphi survey. Eur J Pain 2022; 26:873-887. [DOI: 10.1002/ejp.1914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 01/04/2022] [Accepted: 01/23/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Marion Voute
- CHU Clermont‐Ferrand Plateforme d’Investigation Clinique/CIC Inserm 1405 France
| | - Thibault Riant
- Unité douleur, Le Confluent, Catherine de Sienne Center Nantes France
| | | | | | | | - Olivier Collard
- Centre d'Evaluation et de Traitement de la Douleur, Clinique Sainte Clotilde Ile de la Réunion France
| | | | - Christelle Créac’h
- Centre d'Evaluation et de Traitement de la Douleur, CHU Sainte Etienne Saint Etienne France
| | - Rodrigue Deleens
- Centre d'Evaluation et de Traitement de la Douleur, CHU Rouen France
| | - Claire Delorme
- Centre d'Evaluation et de Traitement de la Douleur, CH Bayeux Bayeux France
| | | | - Véronique Dixneuf
- Evaluation et de Traitement de la Douleur, Clinique Brétéché Nantes France
| | - Lénaïg Dy
- Evaluation et de Traitement de la Douleur, Clinique mutualiste de la porte de l’orient Lorient France
| | | | - Christian Gov
- Centre d'Evaluation et de Traitement de la Douleur, Hôpital neurologique France
| | - Xavier Kieffer
- Centre de la Douleur Chronique et Rebelle, CH Versailles Le Chesnay France
| | - Michel Lanteri‐Minet
- Département d’Evaluation et Traitement de la Douleur Hopital de Cimiez Nice France
| | | | | | | | - Caroline Maindet
- Centre de la Douleur, Hôpital Albert Michallon La Tronche France
| | - Fabienne Marcaillou
- Centre d'Evaluation et de Traitement de la Douleur, CHU Clermont‐Ferrand Clermont‐Ferrand France
| | - Frédéric Plantevin
- Centre d'Evaluation et de Traitement de la Douleur, CH Mâcon Mâcon France
| | - Yves‐Marie Pluchon
- Centre d'Evaluation et de Traitement de la Douleur, CHD Vendée La Roche sur Yon France
| | - Bruno Rioult
- Unité douleur, Le Confluent, Catherine de Sienne Center Nantes France
| | | | - Eric Salvat
- Centre d'Evaluation et de Traitement de la Douleur, Hôpital de Hautepierre Strasbourg France
| | | | - Marc Sorel
- Centre de la Douleur, CH Nemours Nemours France
| | | | - Véronique Morel
- CHU Clermont‐Ferrand Plateforme d’Investigation Clinique/CIC Inserm 1405 France
| | - Ingrid Chazeron
- Service de Psychiatrie B, CHU Clermont‐Ferrand Clermont‐Ferrand France
| | - Gisèle Pickering
- CHU Clermont‐Ferrand Plateforme d’Investigation Clinique/CIC Inserm 1405 France
- Inserm, CIC 1405 UMR Neurodol 1407 Clermont‐Ferrand France
- Clermont Université, Laboratoire de Pharmacologie, Faculté de médecine Clermont‐Ferrand France
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7
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Bhoi D, Nanda S, Mohan V. Postamputation pain: A narrative review. INDIAN JOURNAL OF PAIN 2022. [DOI: 10.4103/ijpn.ijpn_95_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Israel JE, St Pierre S, Ellis E, Hanukaai JS, Noor N, Varrassi G, Wells M, Kaye AD. Ketamine for the Treatment of Chronic Pain: A Comprehensive Review. Health Psychol Res 2021; 9:25535. [PMID: 34746491 DOI: 10.52965/001c.25535] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 07/06/2021] [Indexed: 12/14/2022] Open
Abstract
Background Chronic pain significantly worsens the quality of life. Unlike neuropathic, musculoskeletal, postoperative pain, and cancer pain, chronic primary pain cannot be explained by an underlying disease or condition, making its treatment arduous. Objectives This manuscript intends to provide a comprehensive review of the use of ketamine as a treatment option for specific chronic pain conditions. Study Design A review article. Setting A review of the literature. Methods A search was done on PubMed for relevant articles. Results A comprehensive review of the current understanding of chronic pain and the treatment of specific chronic pain conditions with ketamine. Limitations Literature is scarce regarding the use of ketamine for the treatment of chronic pain. Conclusion First-line treatment for many chronic pain conditions includes NSAIDs, antidepressants, anticonvulsants, and opioids. However, these treatment methods are unsuccessful in a subset of patients. Ketamine has been explored in randomized controlled trials (RCTs) as an alternative treatment option, and it has been demonstrated to improve pain symptoms, patient satisfaction, and quality of life. Conditions highlighted in this review include neuropathic pain, fibromyalgia, complex regional pain syndrome (CRPS), phantom limb pain (PLP), cancer pain, and post-thoracotomy pain syndrome. This review will discuss conditions, such as neuropathic pain, fibromyalgia, complex regional pain syndrome, and more and ketamine's efficacy and its supplementary benefits in the chronic pain patient population. As the opioid crisis in the United States continues to persist, this review aims to understand better multimodal analgesia, which can improve how chronic pain is managed.
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Affiliation(s)
| | | | - Emily Ellis
- Louisiana State University Health Shreveport
| | | | | | | | | | - Alan D Kaye
- Louisiana State University Health Shreveport
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Guo Q, Di Z, Tian HF, Zhang QA. Contralateral Acupuncture for the Treatment of Phantom Limb Pain and Phantom Limb Sensation in Oncologic Lower Limb Amputee: A Case Report. Front Neurosci 2021; 15:713548. [PMID: 34744604 PMCID: PMC8568952 DOI: 10.3389/fnins.2021.713548] [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: 05/23/2021] [Accepted: 09/27/2021] [Indexed: 11/13/2022] Open
Abstract
Phantom limb pain (PLP) and phantom limb sensation (PLS) are common and distressing sequelae of amputation. Current pain management following amputation is challenging and unsatisfying. In this case study, a 74-year-old woman underwent above-knee amputation because of the rhabdomyosarcoma in the right leg. Despite several analgesics, pain was poorly controlled. The phantom limb pain and sensation were immediately reduced by the contralateral acupuncture, and abolished after the third session with no side-effects, no relapse during the next 9 months. Contralateral acupuncture showed positive effect on PLP and PLS in this case, but more robust evidence would be needed to support the efficacy of this treatment technique for indication.
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Affiliation(s)
- Qin Guo
- Department of Acupuncture and Moxibustion, The Third Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Zhong Di
- Department of Acupuncture and Moxibustion, The Third Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Hong-Fang Tian
- Department of Acupuncture and Moxibustion, The Third Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Quan-Ai Zhang
- Department of Acupuncture and Moxibustion, The Third Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
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Allison C, Korey L, John Z S. A novel computational technique for the quantification of temporal summation in healthy individuals. Musculoskelet Sci Pract 2021; 54:102400. [PMID: 34022750 DOI: 10.1016/j.msksp.2021.102400] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 04/12/2021] [Accepted: 05/10/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND The pathophysiology of chronic musculoskeletal pain is linked to the neurophysiologic condition known as central sensitization. Developing reliable, sensitive and clinically feasible techniques for quantifying central sensitization is a timely priority for advancing the field of chronic pain diagnosis and management. OBJECTIVE To compare the sensitivity of the Windup Ratio, a commonly employed Quantitative Sensory Testing (QST) technique, to a novel approach, the Sumsquare method, for detecting changes in experimentally induced central sensitization. DESIGN Individual, randomized, controlled experimental study. METHODS A total of 37 subjects assigned to experimental (N = 18) and control (N = 19) groups. Central sensitization was experimentally induced in the C5-C6 spinal segments using topical capsaicin (0.075%); controls received a non-sensitizing placebo (Lubriderm). Windup (temporal summation) was assessed using weighted pinpricks (MRC Systems, Heidelberg, Germany) applied within regions of secondary hyperalgesia surrounding the topical capsaicin. A train of 10 stimuli was applied at baseline, 10, 20 and 30 min post-topical application and participants provided numeric pain ratings after each pinprick application. Sumsquare and Windup Ratio outcomes were calculated using the pain rating data. RESULTS Sumsquare outcome was significantly increased at all time points (10, 20, 30 min) post-sensitization (p < 0.05); in contrast, no differences in Windup Ratio from baseline were observed at any time point post-sensitization (p > 0.05). CONCLUSIONS Sumsquare outcome offers greater sensitivity than Windup Ratio for detecting changes in experimentally induced central sensitization. These findings introduce a novel method for assessing changes in central sensitization in patients presenting with chronic musculoskeletal pain hypersensitivity.
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Affiliation(s)
- Clouse Allison
- Human Health and Nutritional Science, University of Guelph, Guelph, Canada
| | - Loi Korey
- Human Health and Nutritional Science, University of Guelph, Guelph, Canada
| | - Srbely John Z
- Human Health and Nutritional Science, University of Guelph, Guelph, Canada.
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Abstract
Symptomatic neuromas and chronic neuropathic pain are significant problems affecting patients' quality of life and independence that are challenging to treat. These symptoms are due to structural and functional changes that occur peripherally within neuromas, as well as alterations that occur centrally within the brain and spinal cord. A multimodal approach is most effective, with goals to minimize opioid use, to capitalize on the synergistic effects of nonopioid medications and to explore potential benefits of novel adjunctive treatments.
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Affiliation(s)
- Yusha Liu
- Department of Surgery, University of Washington, 325 9th Avenue, 7 CT 70, MS 359796, Seattle, WA 98104, USA
| | - Dennis S Kao
- Department of Surgery, University of Washington, 325 9th Avenue, 7 CT 70, MS 359796, Seattle, WA 98104, USA.
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12
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Srejic U, Banimahd F. Haunting of the phantom limb pain abolished by buprenorphine/naloxone. BMJ Case Rep 2021; 14:14/2/e237009. [PMID: 33608331 PMCID: PMC7896584 DOI: 10.1136/bcr-2020-237009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Neuropathic opioid refractory phantom limb pain (PLP) following amputation can be a life long debilitating chronic pain syndrome capable of completely destroying a patient's life. The pain, its associated depression and sleep deprivation can make many patients suicidal. Ever changing and relentless, it is notoriously unresponsive to traditional cocktails of strong opioids, adjuvant pain medications, antidepressants, local anaesthetics, nerve stimulators, hypnotics and psychotropics. Drug effects are seldom more effective than placebo. We describe a successful sustained rescue of a difficult 2-year-long PLP case with sublingual buprenorphine/naloxone using the drug's potent multimodal mechanisms of action: potent long-acting mu agonist/antagonist, kapa receptor antagonist, delta receptor antagonist and novel opioid receptor-like 1 (OR-L1) agonist effects. Traditional escalating pure mu-opioid receptor agonists and adjuvant neuropathic pain cocktails often have disappointing efficacy in the treatment of resistant PLP. We suggest introducing buprenorphine/naloxone as an early effective opioid choice in PLP management.
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Affiliation(s)
- Una Srejic
- Anesthesiology, University of California San Diego, La Jolla, California, USA
| | - Faried Banimahd
- Emergency Medicine, University of California Irvine, Irvine, California, USA
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13
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Abstract
Phantom limb pain is highly prevalent after amputation. Treatment results will probably benefit from an interdisciplinary team and individually adapted surgical, prosthetic and pain medicine approaches. Introduction: Most patients with amputation (up to 80%) suffer from phantom limb pain postsurgery. These are often multimorbid patients who also have multiple risk factors for the development of chronic pain from a pain medicine perspective. Surgical removal of the body part and sectioning of peripheral nerves result in a lack of afferent feedback, followed by neuroplastic changes in the sensorimotor cortex. The experience of severe pain, peripheral, spinal, and cortical sensitization mechanisms, and changes in the body scheme contribute to chronic phantom limb pain. Psychosocial factors may also affect the course and the severity of the pain. Modern amputation medicine is an interdisciplinary responsibility. Methods: This review aims to provide an interdisciplinary overview of recent evidence-based and clinical knowledge. Results: The scientific evidence for best practice is weak and contrasted by various clinical reports describing the polypragmatic use of drugs and interventional techniques. Approaches to restore the body scheme and integration of sensorimotor input are of importance. Modern techniques, including apps and virtual reality, offer an exciting supplement to already established approaches based on mirror therapy. Targeted prosthesis care helps to obtain or restore limb function and at the same time plays an important role reshaping the body scheme. Discussion: Consequent prevention and treatment of severe postoperative pain and early integration of pharmacological and nonpharmacological interventions are required to reduce severe phantom limb pain. To obtain or restore body function, foresighted surgical planning and technique as well as an appropriate interdisciplinary management is needed.
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14
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[Perioperative measures for prevention of phantom pain: an evidence-based approach to risk reduction]. Anaesthesist 2020; 69:665-671. [PMID: 32620991 DOI: 10.1007/s00101-020-00810-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Prevention of phantom limb pain is one of the biggest and still largely unsolved challenges in perioperative medicine. Despite many study efforts and optimization of postoperative pain treatment over the last 30 years, a significant reduction in the incidence of phantom limb pain has not been achieved. Current studies have also shown that at least 50% of patients develop phantom pain after 6 months. A possible approach could be to combine multiple synergistic interventions and implement them as a perioperative phantom pain management strategy bundle. In addition to regional anesthesia, NMDA antagonists, gabapentinoids, antidepressants and systemic lidocaine could play a relevant role. The aim of this pharmacological intervention was the modification of the pathophysiological changes in peripheral nerves and in the central nervous system after amputation.
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Czarnetzki C, Desmeules J, Tessitore E, Faundez A, Chabert J, Daali Y, Fournier R, Dupuis‐Lozeron E, Cedraschi C, Richard Tramèr M. Perioperative intravenous low‐dose ketamine for neuropathic pain after major lower back surgery: A randomized, placebo‐controlled study. Eur J Pain 2019; 24:555-567. [DOI: 10.1002/ejp.1507] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 11/13/2019] [Accepted: 11/15/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Christoph Czarnetzki
- Division of Anaesthesiology Department of Anaesthesiology, Pharmacology, Intensive Care and Emergency Medicine Geneva University Hospitals Geneva Switzerland
- Faculty of Medicine University of Geneva Geneva Switzerland
| | - Jules Desmeules
- Faculty of Medicine University of Geneva Geneva Switzerland
- Division of Clinical Pharmacology and Toxicology Department of Anaesthesiology, Pharmacology, Intensive Care and Emergency Medicine Geneva University Hospitals Geneva Switzerland
| | - Enrico Tessitore
- Faculty of Medicine University of Geneva Geneva Switzerland
- Division of Neurosurgery Department of Neurosciences Geneva University Hospitals Geneva Switzerland
| | - Antonio Faundez
- Division of Orthopaedics and Trauma Surgery Department of Surgery Geneva University Hospitals Geneva Switzerland
| | - Jocelyne Chabert
- Division of Clinical Pharmacology and Toxicology Department of Anaesthesiology, Pharmacology, Intensive Care and Emergency Medicine Geneva University Hospitals Geneva Switzerland
| | - Youssef Daali
- Faculty of Medicine University of Geneva Geneva Switzerland
- Division of Clinical Pharmacology and Toxicology Department of Anaesthesiology, Pharmacology, Intensive Care and Emergency Medicine Geneva University Hospitals Geneva Switzerland
| | - Roxane Fournier
- Division of Anaesthesiology Department of Anaesthesiology, Pharmacology, Intensive Care and Emergency Medicine Geneva University Hospitals Geneva Switzerland
- Faculty of Medicine University of Geneva Geneva Switzerland
| | - Elise Dupuis‐Lozeron
- Clinical Research Centre & Division of Clinical Epidemiology Department of Health and Community Medicine University of Geneva & Geneva University Hospitals Geneva Switzerland
| | - Christine Cedraschi
- Faculty of Medicine University of Geneva Geneva Switzerland
- Division of Clinical Pharmacology and Toxicology Department of Anaesthesiology, Pharmacology, Intensive Care and Emergency Medicine Geneva University Hospitals Geneva Switzerland
| | - Martin Richard Tramèr
- Division of Anaesthesiology Department of Anaesthesiology, Pharmacology, Intensive Care and Emergency Medicine Geneva University Hospitals Geneva Switzerland
- Faculty of Medicine University of Geneva Geneva Switzerland
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Baeumler PI, Conzen P, Irnich D. High Temporal Summation of Pain Predicts Immediate Analgesic Effect of Acupuncture in Chronic Pain Patients-A Prospective Cohort Study. Front Neurosci 2019; 13:498. [PMID: 31354400 PMCID: PMC6637793 DOI: 10.3389/fnins.2019.00498] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 04/30/2019] [Indexed: 11/22/2022] Open
Abstract
Objectives: This prospective cohort study explored whether two distinguished sensory parameters predicted acupuncture effects in chronic pain patients; namely high temporal summation of pain (TS) indicating spinal synaptic facilitation as well as a low vibration detection threshold (VDT) indicating a loss of Aβ-fiber function. Methods: Pinprick induced TS and VDT were assessed by standardized, validated methods at the most painful body site and a pain free control site in 100 chronic pain patients receiving six acupuncture sessions as part of an interdisciplinary multimodal pain treatment (IMPT). Immediate change in pain intensity after the first acupuncture session (first treatment on the first day of IMPT) was assessed by the verbal rating scale (VRS, 0-100). After 4 weeks of treatment, patients indicated in a questionnaire whether acupuncture had relieved pain immediately and whether it had contributed to overall pain reduction and well-being after IMPT. Results: Logistic regression analysis revealed an association between high TS at the control site and a reduction in pain intensity of at least 30% (VRS) after the first acupuncture (OR [95%-CI] 4.3 [1.6-11.8]). Questionnaire ratings of immediate pain relief after acupuncture were associated with high TS at the control site (OR [95%-CI] 3.8 [1.4-10.2] any pain relief, OR [95%-CI] 5.5 [1.7-17.1] over 50% pain reduction) and at the pain site (OR [95%-CI] 3.2 [1.2-8.9] any pain relief). Appraisals of the contribution of acupuncture to overall pain reduction and well-being after IMPT were not associated with TS. The VDT was not associated with any outcome. Conclusion: This explorative study provides first-time evidence that high TS, especially at a pain free control site, but not VDT, might predict immediate analgesic response to acupuncture in chronic pain patients. Thus, highly centrally sensitized chronic pain patients might respond particularly well to acupuncture.
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Affiliation(s)
- Petra Iris Baeumler
- Multidisciplinary Pain Center, Department of Anaesthesiology, University Hospital Ludwig-Maximilians-University, Munich, Germany
| | - Peter Conzen
- Department of Anaesthesiology, University Hospital Ludwig-Maximilians-University, Munich, Germany
| | - Dominik Irnich
- Multidisciplinary Pain Center, Department of Anaesthesiology, University Hospital Ludwig-Maximilians-University, Munich, Germany
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A Systematic Review of NMDA Receptor Antagonists for Treatment of Neuropathic Pain in Clinical Practice. Clin J Pain 2019; 34:450-467. [PMID: 28877137 DOI: 10.1097/ajp.0000000000000547] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVE To investigate the efficacy of N-methyl-D-aspartate receptor (NMDAR) antagonists for neuropathic pain (NeuP) and review literature to determine if specific pharmacologic agents provide adequate NeuP relief. METHODS Literature was reviewed on PubMed using a variety of key words for 8 NMDAR antagonists. These key words include: "Ketamine and Neuropathy," "Ketamine and Neuropathic Pain," "Methadone and Neuropathy," "Methadone and Neuropathic Pain," "Memantine and Neuropathic pain," "Memantine and Neuropathy," "Amantadine and Neuropathic Pain," "Amantadine and Neuropathy," "Dextromethorphan and Neuropathic Pain," "Dextromethorphan and Neuropathy," "Carbamazepine and Neuropathic Pain," "Carbamazepine and Neuropathy," "Valproic Acid and Neuropathy," "Valproic Acid and Neuropathic Pain," "Phenytoin and Neuropathy," and "Phenytoin and Neuropathic Pain." With the results, the papers were reviewed using the PRISMA (Preferred Reporting in Systematic and Meta-Analyses) guideline. RESULTS A total of 58 randomized controlled trials were reviewed among 8 pharmacologic agents, which are organized by date and alphabetical order. Of the trials for ketamine, 15 showed some benefit for analgesia. Methadone had 3 positive trials, while amantadine and memantine each only had 2 trials showing NeuP analgesic properties. Dextromethorphan and valproic acid both had 4 randomized controlled trials that showed some NeuP treatment benefit while carbamazepine had over 8 trials showing efficacy. Finally, phenytoin only had 1 trial that showed clinical response in treatment. CONCLUSIONS There are a variety of NMDAR antagonist agents that should be considered for treatment of NeuP. Nevertheless, continued and further investigation of the 8 pharmacologic agents is needed to continue to evaluate their efficacy for treatment of NeuP.
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Frahm KS, Mørch CD, Andersen OK. Cutaneous nociceptive sensitization affects the directional discrimination – but not the 2-point discrimination. Scand J Pain 2019; 19:605-613. [DOI: 10.1515/sjpain-2018-0344] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 03/28/2019] [Indexed: 11/15/2022]
Abstract
Abstract
Background and aims
Several pain conditions have been shown to reduce the discriminative abilities of external stimuli. The aim of this study was to investigate how cutaneous sensitization affects the tempo-spatial discrimination for both painful laser stimulation and mechanical stimulation.
Methods
Fifteen healthy subjects were presented with two different stimulation paradigms, a continuous line stimulation and a 2-point stimulation. Line stimulations were delivered in two different directions in lengths of 25, 50, 75, and 100 mm. Two-point distances from 0 to 100 mm were tested. The subjects reported the perceived intensity, and either direction (line stimulations) or number of perceived points (2-point stimulations). All stimuli were tested both before and after topical capsaicin (8% concentration) sensitization (30 min).
Results
All mechanical line stimulations were reported correctly before capsaicin and 3 stimulations (out of 240) were reported incorrectly after capsaicin. For the laser line stimulation, the directional discrimination threshold (DDT) was 69.5 mm before capsaicin and 76.3 mm after capsaicin. The 2-point discrimination threshold for laser stimulation was 70.3 mm before capsaicin and 68.0 mm after, for the mechanical stimuli it was 31.5 mm before capsaicin and 31.0 mm after capsaicin. The perceived intensities were increased for the laser line stimulations after capsaicin (linear mixed model (LMM), p < 0.001) and increased with stimulation length (LMM, p < 0.001). For mechanical stimuli, NRS was increased following capsaicin (LMM, p < 0.001). The intensities for both mechanical and laser 2-point stimuli increased after capsaicin and increased with distance between points (LMM, p < 0.01).
Conclusions
The findings show how cutaneous sensitization appears to affect directional discrimination to a larger extent than the 2-point discrimination.
Implications
This study is the first to investigate how directional discrimination is altered during sensitization. If such measures can be optimized they may provide a new method to probe the neural mechanisms in pain patients.
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Affiliation(s)
- Ken Steffen Frahm
- Integrative Neuroscience group, Center for Neuroplasticity and Pain (CNAP), SMI , Department of Health Science and Technology , Aalborg University , Fredrik Bajersvej 7D3 (Office A2-204) , Aalborg , Denmark , Phone: +45 99 40 98 42
| | - Carsten Dahl Mørch
- Integrative Neuroscience group, Center for Neuroplasticity and Pain (CNAP), SMI , Department of Health Science and Technology , Aalborg University , Aalborg , Denmark
| | - Ole Kæseler Andersen
- Integrative Neuroscience group, Center for Neuroplasticity and Pain (CNAP), SMI , Department of Health Science and Technology , Aalborg University , Aalborg , Denmark
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Abstract
Wind-up is a frequency-dependent increase in the response of spinal cord neurons, which is believed to underlie temporal summation of nociceptive input. However, whether spinoparabrachial neurons, which likely contribute to the affective component of pain, undergo wind-up was unknown. Here, we addressed this question and investigated the underlying neural circuit. We show that one-fifth of lamina I spinoparabrachial neurons undergo wind-up, and provide evidence that wind-up in these cells is mediated in part by a network of spinal excitatory interneurons that show reverberating activity. These findings provide insight into a polysynaptic circuit of sensory augmentation that may contribute to the wind-up of pain's unpleasantness.
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Hayes C, Armstrong-Brown A, Burstal R. Perioperative Intravenous Ketamine Infusion for the Prevention of Persistent Post-amputation Pain: A Randomized, Controlled Trial. Anaesth Intensive Care 2019; 32:330-8. [PMID: 15264726 DOI: 10.1177/0310057x0403200305] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We hypothesized that perioperative ketamine administration would modify acute central sensitization following amputation and hence reduce the incidence and severity of persistent post-amputation pain (both phantom limb and stump pain). In a randomized, controlled trial, 45 patients undergoing above- or below-knee amputation received ketamine 0.5 mg.kg–1 or placebo as a pre-induction bolus followed by an intravenous infusion of ketamine 0.15 mg.kg–1.h–1 or normal saline for 72 hours postoperatively. Both groups received standardized general anaesthesia followed by patient-controlled intravenous morphine. The surface area of allodynia over the stump was mapped at days 3 and 6. Postamputation pain was assessed at days 3 and 6 and at 6 months postoperatively. We found no significant difference between groups in the surface area of stump allodynia or in morphine consumption. There was an unexplained, but significant, increase in the incidence of stump pain in the ketamine group at day 3. At six-month review, the incidence of phantom pain was 47% in the ketamine group and 71% in the control group. This did not reach statistical significance (P=0.28) as the power of the study was based on the search for a large treatment effect. The incidence of stump pain at six months was 47% in the ketamine group and 35% in the control group (P=0.72). There were no significant between-group differences in pain severity throughout the study period. Ketamine at the dose administered did not significantly reduce acute central sensitization or the incidence and severity of post-amputation pain.
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Affiliation(s)
- C Hayes
- Department of Anaesthesia, Intensive Care and Pain Management John Hunter Hospital, Newcastle, New South Wales
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21
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Phantom Limb Pain. Pain 2019. [DOI: 10.1007/978-3-319-99124-5_193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Pickering G, Morel V, Micallef J. Kétamine et douleur chronique : une revue narrative de son efficacité et sécurité. Therapie 2018; 73:529-539. [DOI: 10.1016/j.therap.2018.06.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 04/27/2018] [Accepted: 06/12/2018] [Indexed: 01/19/2023]
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Abstract
OBJECTIVE To review the literature related to different treatment strategies for the general population of individuals with amputation, spinal cord injury, and cerebral palsy, as well as how this may impact pain management in a correlated athlete population. DATA SOURCES A comprehensive literature search was performed linking pain with terms related to different impairment types. MAIN RESULTS There is a paucity in the literature relating to treatment of pain in athletes with impairment; however, it is possible that the treatment strategies used in the general population of individuals with impairment may be translated to the athlete population. There are a wide variety of treatment options including both pharmacological and nonpharmacological treatments which may be applicable in the athlete. CONCLUSIONS It is the role of the physician to determine which strategy of the possible treatment options will best facilitate the management of pain in the individual athlete in a sport-specific setting.
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Cohen SP, Bhatia A, Buvanendran A, Schwenk ES, Wasan AD, Hurley RW, Viscusi ER, Narouze S, Davis FN, Ritchie EC, Lubenow TR, Hooten WM. Consensus Guidelines on the Use of Intravenous Ketamine Infusions for Chronic Pain From the American Society of Regional Anesthesia and Pain Medicine, the American Academy of Pain Medicine, and the American Society of Anesthesiologists. Reg Anesth Pain Med 2018; 43:521-546. [PMID: 29870458 PMCID: PMC6023575 DOI: 10.1097/aap.0000000000000808] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/17/2018] [Indexed: 01/06/2023]
Abstract
BACKGROUND Over the past 2 decades, the use of intravenous ketamine infusions as a treatment for chronic pain has increased dramatically, with wide variation in patient selection, dosing, and monitoring. This has led to a chorus of calls from various sources for the development of consensus guidelines. METHODS In November 2016, the charge for developing consensus guidelines was approved by the boards of directors of the American Society of Regional Anesthesia and Pain Medicine and, shortly thereafter, the American Academy of Pain Medicine. In late 2017, the completed document was sent to the American Society of Anesthesiologists' Committees on Pain Medicine and Standards and Practice Parameters, after which additional modifications were made. Panel members were selected by the committee chair and both boards of directors based on their expertise in evaluating clinical trials, past research experience, and clinical experience in developing protocols and treating patients with ketamine. Questions were developed and refined by the committee, and the groups responsible for addressing each question consisted of modules composed of 3 to 5 panel members in addition to the committee chair. Once a preliminary consensus was achieved, sections were sent to the entire panel, and further revisions were made. In addition to consensus guidelines, a comprehensive narrative review was performed, which formed part of the basis for guidelines. RESULTS Guidelines were prepared for the following areas: indications; contraindications; whether there was evidence for a dose-response relationship, or a minimum or therapeutic dose range; whether oral ketamine or another N-methyl-D-aspartate receptor antagonist was a reasonable treatment option as a follow-up to infusions; preinfusion testing requirements; settings and personnel necessary to administer and monitor treatment; the use of preemptive and rescue medications to address adverse effects; and what constitutes a positive treatment response. The group was able to reach consensus on all questions. CONCLUSIONS Evidence supports the use of ketamine for chronic pain, but the level of evidence varies by condition and dose range. Most studies evaluating the efficacy of ketamine were small and uncontrolled and were either unblinded or ineffectively blinded. Adverse effects were few and the rate of serious adverse effects was similar to placebo in most studies, with higher dosages and more frequent infusions associated with greater risks. Larger studies, evaluating a wider variety of conditions, are needed to better quantify efficacy, improve patient selection, refine the therapeutic dose range, determine the effectiveness of nonintravenous ketamine alternatives, and develop a greater understanding of the long-term risks of repeated treatments.
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Affiliation(s)
- Steven P. Cohen
- From the Departments of Anesthesiology & Critical Care Medicine, Neurology, and Physical Medicine & Rehabilitation, Johns Hopkins School of Medicine; and
- Uniformed Services University of the Health Sciences, Bethesda, MD
| | - Anuj Bhatia
- Department of Anesthesiology, University of Toronto, Toronto Western Hospital, Toronto, Ontario, Canada
| | | | - Eric S. Schwenk
- Department of Anesthesiology, Jefferson Medical College, Philadelphia; and
| | - Ajay D. Wasan
- Departments of Anesthesiology and Psychiatry, University of Pittsburgh, Pittsburgh, PA
| | - Robert W. Hurley
- Departments of Anesthesiology and Public Health Sciences, Wake Forest School of Medicine, Winston-Salem, NC
| | - Eugene R. Viscusi
- Department of Anesthesiology, Jefferson Medical College, Philadelphia; and
| | - Samer Narouze
- Departments of Anesthesiology and Neurosurgery, Western Reserve Hospital, Akron, OH
| | - Fred N. Davis
- Procare Pain Solutions and
- Department of Anesthesiology, Michigan State University College of Human Medicine, Grand Rapids, MI
| | - Elspeth C. Ritchie
- Department of Psychiatry, Uniformed Services University of the Health Sciences, Georgetown University School of Medicine, Bethesda, MD; and
- Howard University College of Medicine, Washington, DC; and
| | | | - William M. Hooten
- Departments of Anesthesiology and Psychiatry, Mayo College of Medicine, Rochester, MN
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El-Hagrassy MM, Duarte DGG, Thibaut A, Lucena MFG, Fregni F. Principles of designing a clinical trial: optimizing chances of trial success. Curr Behav Neurosci Rep 2018; 5:143-152. [PMID: 30467533 PMCID: PMC6241291 DOI: 10.1007/s40473-018-0152-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
PURPOSE OF REVIEW Clinical trials are essential to advance health care and develop new therapies. In this review we discuss the underlying principles of clinical trial design with an emphasis on assessing design risks that lead to trial failure as well as negative trials. While of general interest, this is perhaps particularly timely for the neuromodulation community, given the paucity of well-designed trials in the field. We give some examples from the phantom limb pain (PLP) literature. RECENT FINDINGS It is critical to gather as much preliminary data as possible and to know how to interpret it in order to choose an appropriate trial design. Therefore, the investigator needs to effectively assess the likely trial design risk/benefit ratio with a view to maximizing the chance of a meaningful outcome, whether this outcome rejects or fails to reject the null hypothesis. This analysis is especially important in a complex and heterogeneous disorder such as PLP, which has had many negative trials. SUMMARY We discuss the factors pertaining to a strong trial design benefit/risk assessment, how late trial phases require greater support from preliminary data, how to design trials to minimize risks, maximize benefits, and optimize internal validity as well as the chances of a positive outcome. We highlight the need for investigators to incorporate best practice in trial design to increase the chances of success, to always anticipate unexpected challenges during the trial.
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Affiliation(s)
- Mirret M. El-Hagrassy
- Neuromodulation Center, Spaulding Rehabilitation Hospital, Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, United States
| | - Dante G. G. Duarte
- Neuromodulation Center, Spaulding Rehabilitation Hospital, Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, United States
| | - Aurore Thibaut
- Neuromodulation Center, Spaulding Rehabilitation Hospital, Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, United States
- Coma Science Group, GIGA-Research, University and University Hospital of Liege, Liege, Belgium
| | - Mariana F. G. Lucena
- Neuromodulation Center, Spaulding Rehabilitation Hospital, Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, United States
| | - Felipe Fregni
- Neuromodulation Center, Spaulding Rehabilitation Hospital, Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, United States
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Greenwald JD, Shafritz KM. An Integrative Neuroscience Framework for the Treatment of Chronic Pain: From Cellular Alterations to Behavior. Front Integr Neurosci 2018; 12:18. [PMID: 29875641 PMCID: PMC5974053 DOI: 10.3389/fnint.2018.00018] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 05/04/2018] [Indexed: 12/21/2022] Open
Abstract
Chronic pain can result from many pain syndromes including complex regional pain syndrome (CRPS), phantom limb pain and chronic low back pain, among others. On a molecular level, chronic pain syndromes arise from hypersensitization within the dorsal horn of the spinal cord, a process known as central sensitization. Central sensitization involves an upregulation of ionotropic and metabotropic glutamate receptors (mGluRs) similar to that of long-term potentiation (LTP). Regions of the brain in which LTP occurs, such as the amygdala and hippocampus, are implicated in fear- and memory-related brain circuity. Chronic pain dramatically influences patient quality of life. Individuals with chronic pain may develop pain-related anxiety and pain-related fear. The syndrome also alters functional connectivity in the default-mode network (DMN) and salience network. On a cellular/molecular level, central sensitization may be reversed through degradative glutamate receptor pathways. This, however, rarely happens. Instead, cortical brain regions may serve in a top-down regulatory capacity for the maintenance or alleviation of pain. Specifically, the medial prefrontal cortex (mPFC), which plays a critical role in fear-related brain circuits, the DMN, and salience network may be the driving forces in this process. On a cellular level, the mPFC may form new neural circuits through LTP that may cause extinction of pre-existing pain pathways found within fear-related brain circuits, the DMN, and salience network. In order to promote new LTP connections between the mPFC and other key brain structures, such as the amygdala and insula, we propose a holistic rehabilitation program including cognitive behavioral therapy (CBT) and revolving around: (1) cognitive reappraisals; (2) mindfulness meditation; and (3) functional rehabilitation. Unlike current medical interventions focusing upon pain-relieving medications, we do not believe that chronic pain treatment should focus on reversing the effects of central sensitization. Instead, we propose here that it is critical to focus on non-invasive efforts to promote new neural circuits originating from the mPFC.
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Affiliation(s)
- Jess D. Greenwald
- Department of Psychology, Hofstra University, Hempstead, NY, United States
| | - Keith M. Shafritz
- Department of Psychology, Hofstra University, Hempstead, NY, United States
- Center for Psychiatric Neuroscience, The Feinstein Institute for Medical Research, Manhasset, NY, United States
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Arendt‐Nielsen L, Morlion B, Perrot S, Dahan A, Dickenson A, Kress H, Wells C, Bouhassira D, Drewes AM. Assessment and manifestation of central sensitisation across different chronic pain conditions. Eur J Pain 2018; 22:216-241. [DOI: 10.1002/ejp.1140] [Citation(s) in RCA: 384] [Impact Index Per Article: 64.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Abstract
AbstractDifferent neuroplastic processes can occur along the nociceptive pathways and may be important in the transition from acute to chronic pain and for diagnosis and development of optimal management strategies. The neuroplastic processes may result in gain (sensitisation) or loss (desensitisation) of function in relation to the incoming nociceptive signals. Such processes play important roles in chronic pain, and although the clinical manifestations differ across condition processes, they share some common mechanistic features. The fundamental understanding and quantitative assessment of particularly some of the central sensitisation mechanisms can be translated from preclinical studies into the clinic. The clinical perspectives are implementation of such novel information into diagnostics, mechanistic phenotyping, prevention, personalised treatment, and drug development. The aims of this paper are to introduce and discuss (1) some common fundamental central pain mechanisms, (2) how they may translate into the clinical signs and symptoms across different chronic pain conditions, (3) how to evaluate gain and loss of function using quantitative pain assessment tools, and (4) the implications for optimising prevention and management of pain. The chronic pain conditions selected for the paper are neuropathic pain in general, musculoskeletal pain (chronic low back pain and osteoarthritic pain in particular), and visceral pain (irritable bowel syndrome in particular). The translational mechanisms addressed are local and widespread sensitisation, central summation, and descending pain modulation.SignificanceCentral sensitisation is an important manifestation involved in many different chronic pain conditions. Central sensitisation can be different to assess and evaluate as the manifestations vary from pain condition to pain condition. Understanding central sensitisation may promote better profiling and diagnosis of pain patients and development of new regimes for mechanism based therapy. Some of the mechanisms underlying central sensitisation can be translated from animals to humans providing new options in development of therapies and profiling drugs under development.
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Affiliation(s)
| | - B. Morlion
- The Leuven Centre for Algology University Hospitals Leuven University of Leuven Belgium
| | - S. Perrot
- INSERM U987 Pain Center Cochin Hospital Paris Descartes University Paris France
| | - A. Dahan
- Department of Anesthesiology Leiden University Medical Center Leiden The Netherlands
| | - A. Dickenson
- Neuroscience Physiology & Pharmacology University College London UK
| | - H.G. Kress
- Department of Special Anaesthesia and Pain Therapy Medizinische Universität/AKH Wien Vienna Austria
| | | | - D. Bouhassira
- INSERM U987 Centre d'Evaluation et de Traitement de la Douleur Hôpital Ambroise Paré Boulogne Billancourt France
| | - A. Mohr Drewes
- Mech‐Sense Department of Gastroenterology and Hepatology Clinical Institute Aalborg University Hospital Aalborg Denmark
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Abstract
Introduction Phantom limb pain (PLP) is a complex condition resulting in pain in the missing limb affecting 60-80% amputees. Increasing number of patients are undergoing amputations. Approximately 1 per every 1000 people in the United Kingdom is an amputee. Incidence of PLP can be as high as 80% following amputation. PLP can be severe and difficult to treat. A range of pharmacological interventions exist yet little is known about them in respect to PLP. This article will address the effectiveness of both single pharmacological, therapy as well as drug combination therapy. Methods We reviewed all literature looking at the evidence for the efficacy of both single and combined pharmacological therapy in the management of phantom limb pain. Not all commonly prescribed analgesic agents have been studied in the use of PLP and in these cases, the evidence of their efficacy in neuropathic pain was reviewed. Conclusion It is difficult to draw definitive conclusions on the pharmacological management of PLP based on current available evidence. Most trials involved small cohorts and were not specific to the PLP. The trials which looked specifically at the PLP population gave conflicting results. Only the N-methyl-d-aspartate (NMDA) receptor antagonist class demonstrated consistent positive results. Most notably ketamine did produce a reduction in pressure pain thresholds and pain windup associated with PLP, although the numbers in these studies remain small. This benefit was not demonstrated across all NMDA receptor antagonists. Combination therapy has demonstrated effectiveness in previous studies for neuropathic pain but this has never been tested specifically against a PLP cohort. Therefore, combination treatment of agents with proven efficacy in PLP such as opioid and gabapentin deserves a closer examination in a controlled study against a placebo as well as single drug therapy.
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Affiliation(s)
- Neil Hall
- The James Cook University Hospital, Middlesbrough, UK
| | - Sam Eldabe
- The James Cook University Hospital, Middlesbrough, UK
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29
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Di Giminiani P, Nasirahmadi A, Malcolm EM, Leach MC, Edwards SA. Docking piglet tails: How much does it hurt and for how long? Physiol Behav 2017; 182:69-76. [PMID: 28974458 DOI: 10.1016/j.physbeh.2017.09.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 09/25/2017] [Accepted: 09/28/2017] [Indexed: 01/24/2023]
Abstract
Tail docking in pigs has the potential for evoking short- as well as long-term physiological and behavioural changes indicative of pain. Nonetheless, the existing scientific literature has thus far provided somewhat inconsistent data on the intensity and the duration of pain based on varying assessment methodologies and different post-procedural observation times. In this report we describe three response stages (immediate, short- and long-term) through the application of vocalisation, behavioural and nociceptive assessments in order to identify changes indicative of potential pain experienced by the piglets. Furthermore, we evaluated the following procedural differences: (1) cautery vs. non-cautery docking; (2) length of tail removal. Sound parameters showed a significantly greater call energy and intensity exhibited by docked vs. sham-docked piglets (P<0.05). Observations of general activity of the animals in a test situation failed to detect a difference among treatments (P>0.05) up to 48h post-tail docking. Similarly, no difference in mechanical nociceptive thresholds indicative of long term pain was observed at 17weeks following neonatal tail docking (P>0.05). The present results highlight the potential for the use of measures of vocalisation to detect peri-procedural changes possibly associated with evoked pain. Nonetheless, activity and nociceptive measures failed to identify post-docking anomalies, suggesting that alternative methodologies need to be implemented to clarify whether tail docking is associated with short- and long-term changes attributable to pain experienced by the piglets.
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Affiliation(s)
- Pierpaolo Di Giminiani
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom.
| | - Abozar Nasirahmadi
- Department of Agricultural and Biosystems Engineering, University of Kassel, D-37213 Witzenhausen, Germany
| | - Emma M Malcolm
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Matthew C Leach
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Sandra A Edwards
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
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30
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Economides JM, DeFazio MV, Attinger CE, Barbour JR. Prevention of Painful Neuroma and Phantom Limb Pain After Transfemoral Amputations Through Concomitant Nerve Coaptation and Collagen Nerve Wrapping. Neurosurgery 2017; 79:508-13. [PMID: 27306717 DOI: 10.1227/neu.0000000000001313] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Postamputation pain is a debilitating condition that affects almost 60% of transfemoral amputees. Recent appreciation for the contribution of peripheral nerve derangement to the development of postamputation pain has resulted in focus on the role of nerve reconstruction in preventing pain after amputation. OBJECTIVE To propose a method involving tibial and common peroneal nerve coaptation at the time of amputation, as a means to prevent residual limb pain and phantom sequelae resulting from neuroma formation. METHODS Between May 2014 and May 2015, 17 patients underwent transfemoral amputation and nerve management through either (1) common peroneal nerve-to- tibial nerve coaptation and collagen nerve wrapping or (2) traction neurectomy alone. Visual analog scores (VAS) for pain, analgesic requirements, neuroma formation, phantom pain/sensations, and ambulatory status were compared between cohorts. RESULTS Six patients underwent nerve coaptation/collagen nerve wrapping, whereas 11 underwent traction neurectomy. At 2 months, VAS scores were similar between cohorts (3 vs 3.82; P = .88); however, neuroma (0% vs 36.3%; P = .24) and phantom pain (0% and 54.5%; P = .03) were significantly lower after coaptation. After 6 months, VAS scores (0.75 vs 5.6; P = .02) as well as neuroma (0% vs 54.5%; P = .03) and phantom pain (0% vs 63.6%; P = .01) remained lower among patients who underwent coaptation. At follow-up, 67% of coaptation patients were ambulating with a prosthesis vs 9% of neurectomy patients (P = .01). CONCLUSION Preemptive coaptation and collagen nerve wrapping is associated with lower VAS pain scores, phantom symptoms, and neuroma formation, with higher ambulation rates after 6 months when compared with traction neurectomy alone. ABBREVIATIONS CPN, common peroneal nervePAP, Postamputation painPLP, phantom limb painPS, phantom sensationsRLP, residual limb painTN, tibial nerve.
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Affiliation(s)
- James M Economides
- *Department of Plastic Surgery and ‡Department of Neurosurgery, Medstar Georgetown University Hospital, Washington, DC
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Wylde V, Dennis J, Beswick AD, Bruce J, Eccleston C, Howells N, Peters TJ, Gooberman‐Hill R. Systematic review of management of chronic pain after surgery. Br J Surg 2017; 104:1293-1306. [PMID: 28681962 PMCID: PMC5599964 DOI: 10.1002/bjs.10601] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 01/24/2017] [Accepted: 04/21/2017] [Indexed: 12/24/2022]
Abstract
BACKGROUND Pain present for at least 3 months after a surgical procedure is considered chronic postsurgical pain (CPSP) and affects 10-50 per cent of patients. Interventions for CPSP may focus on the underlying condition that indicated surgery, the aetiology of new-onset pain or be multifactorial in recognition of the diverse causes of this pain. The aim of this systematic review was to identify RCTs of interventions for the management of CPSP, and synthesize data across treatment type to estimate their effectiveness and safety. METHODS MEDLINE, Embase, PsycINFO, CINAHL and the Cochrane Library were searched from inception to March 2016. Trials of pain interventions received by patients at 3 months or more after surgery were included. Risk of bias was assessed using the Cochrane risk-of-bias tool. RESULTS Some 66 trials with data from 3149 participants were included. Most trials included patients with chronic pain after spinal surgery (25 trials) or phantom limb pain (21 trials). Interventions were predominantly pharmacological, including antiepileptics, capsaicin, epidural steroid injections, local anaesthetic, neurotoxins, N-methyl-d-aspartate receptor antagonists and opioids. Other interventions included acupuncture, exercise, postamputation limb liner, spinal cord stimulation, further surgery, laser therapy, magnetic stimulation, mindfulness-based stress reduction, mirror therapy and sensory discrimination training. Opportunities for meta-analysis were limited by heterogeneity. For all interventions, there was insufficient evidence to draw conclusions on effectiveness. CONCLUSION There is a need for more evidence about interventions for CPSP. High-quality trials of multimodal interventions matched to pain characteristics are needed to provide robust evidence to guide management of CPSP.
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Affiliation(s)
- V. Wylde
- Musculoskeletal Research Unit, School of Clinical SciencesUniversity of BristolBristolUK
| | - J. Dennis
- Musculoskeletal Research Unit, School of Clinical SciencesUniversity of BristolBristolUK
| | - A. D. Beswick
- Musculoskeletal Research Unit, School of Clinical SciencesUniversity of BristolBristolUK
| | - J. Bruce
- Warwick Clinical Trials UnitUniversity of WarwickWarwickUK
| | - C. Eccleston
- Centre for Pain ResearchUniversity of BathBathUK
- Department of Experimental‐Clinical and Health PsychologyGhent UniversityGhentBelgium
| | - N. Howells
- Avon Orthopaedic Centre, Department of Trauma and OrthopaedicsNorth Bristol NHS TrustBristolUK
| | - T. J. Peters
- Musculoskeletal Research Unit, School of Clinical SciencesUniversity of BristolBristolUK
| | - R. Gooberman‐Hill
- Musculoskeletal Research Unit, School of Clinical SciencesUniversity of BristolBristolUK
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Richardson C, Kulkarni J. A review of the management of phantom limb pain: challenges and solutions. J Pain Res 2017; 10:1861-1870. [PMID: 28860841 PMCID: PMC5558877 DOI: 10.2147/jpr.s124664] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Phantom limb pain (PLP) occurs in 50% and 80% of amputees. Although it is often classified as a neuropathic pain, few of the large-scale trials of treatments for neuropathic pain included sufficient numbers of PLP sufferers to have confidence that they are effective in this condition. Many therapies have been administered to amputees with PLP over the years; however, as of yet, there appears to be no first-line treatment. OBJECTIVES To comprehensively review the literature on treatment modalities for PLP and to identify the challenges currently faced by clinicians dealing with this pain. METHOD MEDLINE, EMBASE, CINAHL, British Nursing Index, Cochrane and psycINFO databases were searched using "Phantom limb" initially as a MeSH term to identify treatments that had been tried. Then, a secondary search combining phantom limb with each treatment was performed to find papers specific to each therapy. Each paper was assessed for its research strength using the GRADE system. RESULTS Thirty-eight therapies were identified. Overall, the quality of evidence was low. There was one high-quality study which used repetitive transcutaneous magnetic stimulation and found a statistical reduction in pain at day 15 but no difference at day 30. Significant results from single studies of moderate level quality were available for gabapentin, ketamine and morphine; however, there was a risk of bias in these papers. Mirror therapy and associated techniques were assessed through two systematic reviews, which conclude that there is insufficient evidence to support their use. CONCLUSION No decisions can be made for the first-line management of PLP, as the level of evidence is too low. Robust studies on homogeneous populations, an understanding of what amputees consider a meaningful reduction in PLP and agreement of whether pain intensity is the legitimate therapeutic target are urgently required.
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Affiliation(s)
- Cliff Richardson
- University of Manchester, Division of Nursing Midwifery and Social Work, Manchester, UK
| | - Jai Kulkarni
- Specialized Ability Centre (Manchester), University Hospitals of South Manchester NHS Foundation Trust, Manchester, UK
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Di Giminiani P, Edwards SA, Malcolm EM, Leach MC, Herskin MS, Sandercock DA. Characterization of short- and long-term mechanical sensitisation following surgical tail amputation in pigs. Sci Rep 2017; 7:4827. [PMID: 28684801 PMCID: PMC5500571 DOI: 10.1038/s41598-017-05404-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 05/26/2017] [Indexed: 12/25/2022] Open
Abstract
Commercial pigs are frequently exposed to tail mutilations in the form of preventive husbandry procedures (tail docking) or as a result of abnormal behaviour (tail biting). Although tissue and nerve injuries are well-described causes of pain hypersensitivity in humans and in rodent animal models, there is no information on the changes in local pain sensitivity induced by tail injuries in pigs. To determine the temporal profile of sensitisation, pigs were exposed to surgical tail resections and mechanical nociceptive thresholds (MNT) were measured in the acute (one week post-operatively) and in the long-term (either eight or sixteen weeks post-surgery) phase of recovery. The influence of the degree of amputation on MNTs was also evaluated by comparing three different tail-resection treatments (intact, ‘short tail’, ‘long tail’). A significant reduction in MNTs one week following surgery suggests the occurrence of acute sensitisation. Long-term hypersensitivity was also observed in tail-resected pigs at either two or four months following surgery. Tail amputation in pigs appears to evoke acute and sustained changes in peripheral mechanical sensitivity, which resemble features of neuropathic pain reported in humans and other species and provides new information on implications for the welfare of animals subjected to this type of injury.
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Affiliation(s)
- Pierpaolo Di Giminiani
- School of Agriculture, Food and Rural Development, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom.
| | - Sandra A Edwards
- School of Agriculture, Food and Rural Development, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom
| | - Emma M Malcolm
- School of Agriculture, Food and Rural Development, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom
| | - Matthew C Leach
- School of Agriculture, Food and Rural Development, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom
| | - Mette S Herskin
- Aarhus University, Department of Animal Science, Au-Foulum, Tjele, Denmark
| | - Dale A Sandercock
- Animal and Veterinary Science Research Group, Scotland's Rural College (SRUC), West Mains Road, Edinburgh, EH16 4SA, United Kingdom
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Abstract
One of the most fascinating drugs in the anesthesiologist's armament is ketamine, an N-methyl-D-aspartate receptor antagonist with a myriad of uses. The drug is a dissociative anesthetic and has been used more often as an analgesic in numerous hospital units, outpatient pain clinics, and in the prehospital realm. It has been used to treat postoperative pain, chronic pain, complex regional pain syndrome, phantom limb pain, and other neuropathic conditions requiring analgesia. Research has also demonstrated its efficacy as an adjunct in psychotherapy, as a treatment for both depression and posttraumatic stress disorder, as a procedural sedative, and as a treatment for respiratory and neurologic conditions. Ketamine is not without its adverse effects, some of which can be mitigated with certain efforts. Such effects make it necessary for the clinician to use the drug only in situations where it will provide the greatest benefit with the fewest adverse effects. To the best of our knowledge, none of the reviews regarding ketamine have taken a comprehensive look at the drug's uses in all territories of medicine. This review will serve to touch on its chemical data, pharmacokinetics and pharmacodynamics, medical uses, and adverse effects while focusing specifically on the drugs usage in anesthesia and analgesia.
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Ahmed A, Bhatnagar S, Mishra S, Khurana D, Joshi S, Ahmad SM. Prevalence of Phantom Limb Pain, Stump Pain, and Phantom Limb Sensation among the Amputated Cancer Patients in India: A Prospective, Observational Study. Indian J Palliat Care 2017; 23:24-35. [PMID: 28216859 PMCID: PMC5294433 DOI: 10.4103/0973-1075.197944] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
INTRODUCTION The phantom limb pain (PLP) and phantom limb sensation (PLS) are very common among amputated cancer patients, and they lead to considerable morbidity. In spite of this, there is a lack of epidemiological data of this phenomenon among the Asian population. This study was done to provide the data from Indian population. METHODS The prevalence of PLP, stump pain (SP), and PLS was prospectively analyzed from the amputated cancer patients over a period of 2 years in Dr. B.R.A. Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi. The risk factors and the impact of phantom phenomenon on patients were also noted. RESULTS The prevalence of PLP was 41% at 3 and 12 months and 45.3% at 6 months, whereas that of SP and PLS was 14.4% and 71.2% at 3 months, 18.75% and 37.1% at 6 months, 15.8% and 32.4% at 12 months, respectively. There was higher prevalence of PLP and PLS among the patients with history of preamputation pain, smoking with proximal level of amputation, receiving general anesthesia, receiving intravenous (IV) opioid postoperative analgesia, and developing neuroma or infection. CONCLUSION The prevalence of PLP and PLS was higher among the cancer amputees as compared to SP, and a few risk factors responsible for their higher prevalence were found in our study. The PLP and PLS lead to considerable morbidity in terms of sleep disturbance and depression.
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Affiliation(s)
- Arif Ahmed
- Department of Anesthesia, Pain and Palliative Care, Dr. B.R.A. Institute Rotary Cancer Hospital, All Institute of Medical Sciences, New Delhi, India
| | - Sushma Bhatnagar
- Department of Anesthesia, Pain and Palliative Care, Dr. B.R.A. Institute Rotary Cancer Hospital, All Institute of Medical Sciences, New Delhi, India
| | - Seema Mishra
- Department of Anesthesia, Pain and Palliative Care, Dr. B.R.A. Institute Rotary Cancer Hospital, All Institute of Medical Sciences, New Delhi, India
| | - Deepa Khurana
- Department of Anesthesia, Pain and Palliative Care, Dr. B.R.A. Institute Rotary Cancer Hospital, All Institute of Medical Sciences, New Delhi, India
| | - Saurabh Joshi
- Department of Anesthesia, Pain and Palliative Care, Dr. B.R.A. Institute Rotary Cancer Hospital, All Institute of Medical Sciences, New Delhi, India
| | - Syed Mehmood Ahmad
- Department of Anesthesia, Pain and Palliative Care, Dr. B.R.A. Institute Rotary Cancer Hospital, All Institute of Medical Sciences, New Delhi, India
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Pain Management for Sarcoma Patients. Sarcoma 2017. [DOI: 10.1007/978-3-319-43121-5_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Trevelyan EG, Turner WA, Summerfield-Mann L, Robinson N. Acupuncture for the treatment of phantom limb syndrome in lower limb amputees: a randomised controlled feasibility study. Trials 2016; 17:519. [PMID: 27782861 PMCID: PMC5080724 DOI: 10.1186/s13063-016-1639-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 10/04/2016] [Indexed: 11/16/2022] Open
Abstract
Background Post amputation, the complication of phantom limb pain (PLP) is prevalent and difficult to manage. This study aimed to determine whether it was feasible and acceptable to undertake a definitive multicentred randomised controlled trial assessing the effectiveness of acupuncture for treating lower limb amputees with PLP. Methods A mixed-methods embedded design, including a randomised controlled trial and semistructured interviews, was undertaken. A total of 15 participants with PLP were randomly assigned to receive either eight pragmatic Traditional Chinese Medicine acupuncture treatments and usual care or usual care alone over 4 weeks. Outcome measures were completed at baseline, weekly throughout the study and at 1 month post completion of the study and included: a numerical pain-rating scale, the Short-Form McGill Pain Questionnaire 2, the EQ-5D-5 L, the Hospital Anxiety and Depression Scale, the Perceived Stress Scale 10-item, the Insomnia Severity Index, and the Patient Global Impression of Change. Post completion of the trial, participants in the acupuncture group were interviewed about their experience. Feasibility-specific data were also collected. Results Of 24 amputees meeting the study inclusion criteria, 15 agreed to participate (recruitment rate 62.50 %). Qualitatively, acupuncture was perceived to be beneficial and effective. Quantitatively, acupuncture demonstrated clinically meaningful change in average pain intensity (raw change = 2.69) and worst pain intensity (raw change = 4.00). Feasibility-specific data identified that before undertaking a definitive trial, recruitment, practitioner adherence to the acupuncture protocol, completion of outcome measures at 1 month follow-up and blinding should be addressed. Appropriate outcome measures were identified for use in a definitive trial. Data were generated for future sample size calculations (effect size 0.64). Allowing for a 20 % dropout rate, a sample size of 85 participants per group would be needed in a future definitive trial. Conclusions A future definitive trial may be possible if the areas identified in this study are addressed. As acupuncture may be effective at treating PLP, and as this feasibility study suggests that a definitive trial may be possible, a multicentred trial with adequate sample size and blinding is now needed. Trial registration ClinicalTrials.gov Identifier: NCT02126436, registered on 4 September 2014. Electronic supplementary material The online version of this article (doi:10.1186/s13063-016-1639-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Esmé G Trevelyan
- School of Health and Social Care, London South Bank University, 103 Borough Road, London, SE1 0AA, UK.
| | - Warren A Turner
- School of Health and Social Care, London South Bank University, 103 Borough Road, London, SE1 0AA, UK
| | - Lynn Summerfield-Mann
- School of Health and Social Care, London South Bank University, 103 Borough Road, London, SE1 0AA, UK
| | - Nicola Robinson
- School of Health and Social Care, London South Bank University, 103 Borough Road, London, SE1 0AA, UK
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Abstract
BACKGROUND This is an updated version of the original Cochrane review published in Issue 12, 2011. Phantom limb pain (PLP) is pain that arises in the missing limb after amputation and can be severe, intractable, and disabling. Various medications have been studied in the treatment of phantom pain. There is currently uncertainty in the optimal pharmacologic management of PLP. OBJECTIVES This review aimed to summarise the evidence of effectiveness of pharmacologic interventions in treating PLP. SEARCH METHODS For this update, we searched the Cochrane Central Register of Controlled Trials (CENTRAL, the Cochrane Library), MEDLINE, and Embase for relevant studies. We ran the searches for the original review in September 2011 and subsequent searches for this update up to April 2016. We sought additional studies from clinical trials databases and reference lists of retrieved papers. SELECTION CRITERIA We included randomised and quasi-randomised trials studying the effectiveness of pharmacologic interventions compared with placebo, another active treatment, or no treatment, in established PLP. We considered the following outcomes: change in pain intensity, function, sleep, depression or mood, quality of life, adverse events, treatment satisfaction, and withdrawals from the study. DATA COLLECTION AND ANALYSIS We independently assessed issues of study quality and extracted efficacy and adverse event data. Due to the wide variability in the studies, we did not perform a meta-analysis for all the interventions and outcomes, but attempted to pool the results of some studies where possible. We prepared a qualitative description and narrative summary of results. We assessed clinical heterogeneity by making qualitative comparisons of the populations, interventions, outcomes/outcome measures, and methods. MAIN RESULTS We added only one new study with 14 participants to this updated review. We included a 14 studies (10 with low risk of bias and 4 with unclear risk of bias overall) with a total of 269 participants. We added another drug class, botulinum neurotoxins (BoNTs), in particular botulinum toxin A (BoNT/A), to the group of medications reviewed previously. Our primary outcome was change in pain intensity. Most studies did not report our secondary outcomes of sleep, depression or mood, quality of life, treatment satisfaction, or withdrawals from the study.BoNT/A did not improve phantom limb pain intensity during the six months of follow-up compared with lidocaine/methylprednisolone.Compared with placebo, morphine (oral and intravenous) was effective in decreasing pain intensity in the short term with reported adverse events being constipation, sedation, tiredness, dizziness, sweating, voiding difficulty, vertigo, itching, and respiratory problems.The N-methyl D-aspartate (NMDA) receptor antagonists ketamine (versus placebo; versus calcitonin) and dextromethorphan (versus placebo), but not memantine, had analgesic effects. The adverse events of ketamine were more serious than placebo and calcitonin and included loss of consciousness, sedation, hallucinations, hearing and position impairment, and insobriety.The results for gabapentin in terms of pain relief were conflicting, but combining the results favoured treatment group (gabapentin) over control group (placebo) (mean difference -1.16, 95% confidence interval -1.94 to -0.38; 2 studies). However, gabapentin did not improve function, depression score, or sleep quality. Adverse events experienced were somnolence, dizziness, headache, and nausea.Compared with an active control benztropine mesylate, amitriptyline was not effective in PLP, with dry mouth and dizziness as the most frequent adverse events based on one study.The findings for calcitonin (versus placebo; versus ketamine) and local anaesthetics (versus placebo) were variable. Adverse events of calcitonin were headache, vertigo, drowsiness, nausea, vomiting, and hot and cold flushes. Most of the studies were limited by their small sample sizes. AUTHORS' CONCLUSIONS Since the last version of this review, we identified another study that added another form of medical therapy, BoNTs, specifically BoNT/A, to the list of pharmacologic interventions being reviewed for clinical efficacy in phantom limb pain. However, the results of this study did not substantially change the main conclusions. The short- and long-term effectiveness of BoNT/A, opioids, NMDA receptor antagonists, anticonvulsants, antidepressants, calcitonins, and local anaesthetics for clinically relevant outcomes including pain, function, mood, sleep, quality of life, treatment satisfaction, and adverse events remain unclear. Based on a small study, BoNT/A (versus lidocaine/methylprednisolone) does not decrease phantom limb pain. Morphine, gabapentin, and ketamine demonstrate favourable short-term analgesic efficacy compared with placebo. Memantine and amitriptyline may not be effective for PLP. However, results must be interpreted with caution, as they were based mostly on a small number of studies with limited sample sizes that varied considerably and also lacked long-term efficacy and safety outcomes. The direction of efficacy of calcitonin, local anaesthetics, and dextromethorphan needs further clarification. Overall, the efficacy evidence for the reviewed medications is thus far inconclusive. Larger and more rigorous randomised controlled trials are needed for us to reach more definitive conclusions about which medications would be useful for clinical practice.
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Affiliation(s)
- Maria Jenelyn M Alviar
- University of Melbourne-Royal Melbourne Hospital, Grattan St, Melbourne, Victoria, Australia, 3010
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Hazelgrove JF, Rogers PD. Phantom Limb Pain—A Complication of Lower Extremity Wound Management. INT J LOW EXTR WOUND 2016; 1:112-24. [PMID: 15871961 DOI: 10.1177/1534734602001002006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Amputation is one treatment option for patients with critical limb ischemia, diabetic foot wounds, and occasionally, even venous leg ulcers. Amputation of the whole limb or part of it or the digits can cause complications including pain. Post-amputation pain, and especially phantom limb pain (PLP), is a poorly understood phenomenon. Effective management of established pain is a major challenge. This reviewis for wound workers who are a multiprofessional group. Any amputated limb, appendage, or viscera can be affected by PLP, though the focus of this article will be the treatment of PLP following limb loss. The pathophysiology is still not fully understood. The size of the problem of PLP, possible underlying physiological mechanisms, and potential preventative measures are presented in this article.
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Zekry O, Gibson SB, Aggarwal A. Subanesthetic, Subcutaneous Ketamine Infusion Therapy in the Treatment of Chronic Nonmalignant Pain. J Pain Palliat Care Pharmacother 2016; 30:91-8. [DOI: 10.3109/15360288.2016.1161690] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Parallels between phantom pain and tinnitus. Med Hypotheses 2016; 91:95-97. [PMID: 27142154 DOI: 10.1016/j.mehy.2016.04.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 04/13/2016] [Indexed: 01/23/2023]
Abstract
Phantom pain and tinnitus are diseases that cause patients great discomfort. Both are phantom sensations that have many connections with cerebral structures, but their underlying mechanisms are not fully understood. Several therapies have been suggested for these conditions over the years, but there is still no consensus on how to treat either one. Comparison of these two phenomena reveals many similarities, including what is known about their underlying mechanisms, associated brain areas, and responses to therapeutic agents and methods. These similarities need to be evaluated in greater depth, as this could improve our understanding of tinnitus and phantom pain, and thereby improve management strategies for these conditions.
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Yamamoto T, Watanabe M, Obuchi T, Kano T, Kobayashi K, Oshima H, Fukaya C, Yoshino A. Importance of Pharmacological Evaluation in the Treatment of Poststroke Pain by Spinal Cord Stimulation. Neuromodulation 2016; 19:744-751. [DOI: 10.1111/ner.12408] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Revised: 01/04/2016] [Accepted: 01/12/2016] [Indexed: 12/21/2022]
Affiliation(s)
- Takamitsu Yamamoto
- Division of Applied System Neuroscience, Department of Neurological Surgery; Nihon University School of Medicine; Tokyo Japan
| | - Mitsuru Watanabe
- Division of Applied System Neurosurgery, Department of Neurological Surgery; Nihon University School of Medicine; Tokyo Japan
| | - Toshiki Obuchi
- Division of Applied System Neurosurgery, Department of Neurological Surgery; Nihon University School of Medicine; Tokyo Japan
| | - Toshikazu Kano
- Division of Applied System Neurosurgery, Department of Neurological Surgery; Nihon University School of Medicine; Tokyo Japan
| | - Kazutaka Kobayashi
- Division of Applied System Neurosurgery, Department of Neurological Surgery; Nihon University School of Medicine; Tokyo Japan
| | - Hideki Oshima
- Division of Applied System Neurosurgery, Department of Neurological Surgery; Nihon University School of Medicine; Tokyo Japan
| | - Chikashi Fukaya
- Division of Applied System Neuroscience, Department of Neurological Surgery; Nihon University School of Medicine; Tokyo Japan
| | - Atsuo Yoshino
- Division of Applied System Neurosurgery, Department of Neurological Surgery; Nihon University School of Medicine; Tokyo Japan
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Johansen A, Schirmer H, Nielsen CS, Stubhaug A. Persistent post-surgical pain and signs of nerve injury: the Tromsø Study. Acta Anaesthesiol Scand 2016; 60:380-92. [PMID: 26537886 DOI: 10.1111/aas.12653] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2014] [Revised: 06/20/2015] [Accepted: 08/19/2015] [Indexed: 12/11/2022]
Abstract
BACKGROUND The contribution of nerve lesions and neuropathic pain to persistent post-surgical pain (PPSP) is poorly established. The aim of this study was to assess the association between PPSP and symptoms and signs of possible nerve injury in an unselected surgical sample. METHODS Eighty-one individuals with and without persistent pain after surgical procedures, were recruited from a cross-sectional study. Follow-up examination with questionnaires and quantitative sensory testing was performed 15-32 months later (21-64 months after surgery). RESULTS The median rating of maximum pain intensity among individuals with PPSP decreased from numerical rating scale 4/10 at baseline to 2/10 at follow-up, but considerable changes occurred in both directions. Individuals with PPSP at follow-up were significantly more likely to self-report sensory abnormalities than those without PPSP; however, results from sensory testing did not differ significantly between the groups. Self-report of sensory disturbances at the site of surgery was associated with increased warm detection thresholds and tactile pain thresholds. Among individuals with PPSP, 61% had positive findings on sensory testing, suggesting probable neuropathic pain. CONCLUSION In this study, associations between self-reported symptoms and PPSP were stronger than associations between self-reported symptoms and results of psychophysical tests. Fluctuations in pain intensity together with wide ranges for normal variability in sensory functions, hampers detection of significant group differences. Methodological aspects of quantitative sensory testing applied in a mixed clinical sample are discussed.
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Affiliation(s)
- A. Johansen
- Division of Surgical Medicine and Intensive Care; University Hospital of North Norway; Tromsø Norway
- Department of Community Medicine; The Arctic University of Norway; Tromsø Norway
| | - H. Schirmer
- Division of Cardiothoracic and Respiratory Medicine; University Hospital of North Norway; Tromsø Norway
- Department of Clinical Medicine; The Arctic University of Norway; Tromsø Norway
| | - C. S. Nielsen
- Division of Mental Health; Norwegian Institute of Public Health; Oslo Norway
- Department of Pain Management and Research; Division of Emergencies and Critical Care; Oslo University Hospital; Oslo Norway
| | - A. Stubhaug
- Department of Pain Management and Research; Division of Emergencies and Critical Care; Oslo University Hospital; Oslo Norway
- Institute of Clinical Medicine; Faculty of Medicine; University of Oslo; Oslo Norway
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Cumberworth J, Kieffer WKM, Harry LE, Rogers BA. Perioperative management of traumatic limb amputations due to civilian trauma: current practice and future directions. J Perioper Pract 2016; 25:262-6. [PMID: 26845788 DOI: 10.1177/175045891502501203] [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: 11/16/2022]
Abstract
Traumatic limb amputations are serious injuries. They require urgent multidisciplinary management and emergency surgical intervention to save life and, where possible, preserve limb function. It is therefore vital that perioperative management follows established evidence-based principles to optimise outcomes. In recent years a vast quantity of research on traumatic amputations in the military setting has been published, but civilian injuries, which often have strikingly different mechanisms, have been neglected. This article reviews existing information on epidemiology, pathophysiology, perioperative management strategies, outcomes and future directions in the field.
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Warner NS, Warner MA, Moeschler SM, Hoelzer BC. Pain Management in Four-Limb Amputation: A Case Report. Pain Pract 2015; 15:E76-80. [PMID: 26011696 DOI: 10.1111/papr.12307] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 02/09/2015] [Indexed: 11/28/2022]
Abstract
Acute pain following amputation can be challenging to treat due to multiple underlying mechanisms and variable clinical responses to treatment. Furthermore, poorly controlled preoperative pain is a risk factor for developing chronic pain. Evidence suggests that epidural analgesia and peripheral nerve blockade may decrease the severity of residual limb pain and the prevalence of phantom pain after lower extremity amputation. We present the perioperative analgesic management of a patient with gangrene of the bilateral upper and lower extremities as a result of septic shock and prolonged vasopressor administration who underwent four-limb amputation in a single procedure. A multimodal analgesic regimen was utilized, including titration of preoperative opioid and neuropathic pain agents, perioperative intravenous, epidural and peripheral nerve catheter infusions, and postoperative oral medication titration. More than 8 months postoperatively, the patient has satisfactory pain control with no evidence for phantom limb pain. To our knowledge, there have been no publications to date concerning analgesic regimens in four-limb amputation.
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Affiliation(s)
- Nafisseh S Warner
- Department of Anesthesiology, Mayo Clinic, Rochester, Minnesota, U.S.A
| | - Matthew A Warner
- Department of Anesthesiology, Mayo Clinic, Rochester, Minnesota, U.S.A
| | - Susan M Moeschler
- Department of Anesthesiology, Mayo Clinic, Rochester, Minnesota, U.S.A.,Division of Pain Medicine, Mayo Clinic, Rochester, Minnesota, U.S.A
| | - Bryan C Hoelzer
- Department of Anesthesiology, Mayo Clinic, Rochester, Minnesota, U.S.A.,Division of Pain Medicine, Mayo Clinic, Rochester, Minnesota, U.S.A
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Joharatnam N, McWilliams DF, Wilson D, Wheeler M, Pande I, Walsh DA. A cross-sectional study of pain sensitivity, disease-activity assessment, mental health, and fibromyalgia status in rheumatoid arthritis. Arthritis Res Ther 2015; 17:11. [PMID: 25600850 PMCID: PMC4363056 DOI: 10.1186/s13075-015-0525-5] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Accepted: 01/09/2015] [Indexed: 11/30/2022] Open
Abstract
Introduction Pain remains the most important problem for people with rheumatoid arthritis (RA). Active inflammatory disease contributes to pain, but pain due to non-inflammatory mechanisms can confound the assessment of disease activity. We hypothesize that augmented pain processing, fibromyalgic features, poorer mental health, and patient-reported 28-joint disease activity score (DAS28) components are associated in RA. Methods In total, 50 people with stable, long-standing RA recruited from a rheumatology outpatient clinic were assessed for pain-pressure thresholds (PPTs) at three separate sites (knee, tibia, and sternum), DAS28, fibromyalgia, and mental health status. Multivariable analysis was performed to assess the association between PPT and DAS28 components, DAS28-P (the proportion of DAS28 derived from the patient-reported components of visual analogue score and tender joint count), or fibromyalgia status. Results More-sensitive PPTs at sites over or distant from joints were each associated with greater reported pain, higher patient-reported DAS28 components, and poorer mental health. A high proportion of participants (48%) satisfied classification criteria for fibromyalgia, and fibromyalgia classification or characteristics were each associated with more sensitive PPTs, higher patient-reported DAS28 components, and poorer mental health. Conclusions Widespread sensitivity to pressure-induced pain, a high prevalence of fibromyalgic features, higher patient-reported DAS28 components, and poorer mental health are all linked in established RA. The increased sensitivity at nonjoint sites (sternum and anterior tibia), as well as over joints, indicates that central mechanisms may contribute to pain sensitivity in RA. The contribution of patient-reported components to high DAS28 should inform decisions on disease-modifying or pain-management approaches in the treatment of RA when inflammation may be well controlled.
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Affiliation(s)
- Nalinie Joharatnam
- Arthritis UK Pain Centre, Division of ROD, University of Nottingham, Nottingham, UK.
| | - Daniel F McWilliams
- Arthritis UK Pain Centre, Division of ROD, University of Nottingham, Nottingham, UK.
| | - Deborah Wilson
- Department Rheumatology, Sherwood Forest Hospitals NHS Foundation Trust, Sutton-in-Ashfield, UK.
| | - Maggie Wheeler
- Arthritis UK Pain Centre, Division of ROD, University of Nottingham, Nottingham, UK.
| | - Ira Pande
- Department of Rheumatology, Nottingham University Hospitals NHS Trust, Nottingham, UK.
| | - David A Walsh
- Arthritis UK Pain Centre, Division of ROD, University of Nottingham, Nottingham, UK. .,Department Rheumatology, Sherwood Forest Hospitals NHS Foundation Trust, Sutton-in-Ashfield, UK. .,Arthritis UK Pain Centre, Academic Rheumatology, Clinical Sciences Building, City Hospital, Nottingham, UK.
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Abstract
It is evident that chronic pain can modify the excitability of central nervous system which imposes a specific challenge for the management and for the development of new analgesics. The central manifestations can be difficult to quantify using standard clinical examination procedures, but quantitative sensory testing (QST) may help to quantify the degree and extend of the central reorganization and effect of pharmacological interventions. Furthermore, QST may help in optimizing the development programs for new drugs.Specific translational mechanistic QST tools have been developed to quantify different aspects of central sensitization in pain patients such as threshold ratios, provoked hyperalgesia/allodynia, temporal summation (wind-up like pain), after sensation, spatial summation, reflex receptive fields, descending pain modulation, offset analgesia, and referred pain areas. As most of the drug development programs in the area of pain management have not been very successful, the pharmaceutical industry has started to utilize the complementary knowledge obtained from QST profiling. Linking patients QST profile with drug efficacy profile may provide the fundamentals for developing individualized, targeted pain management programs in the future. Linking QST-assessed pain mechanisms with treatment outcome provides new valuable information in drug development and for optimizing the management regimes for chronic pain.
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Affiliation(s)
- Lars Arendt-Nielsen
- Center for Sensory-Motor Interaction (SMI), Department of Health Science and Technology, School of Medicine, Aalborg University, Fredrik Bajers Vej 7-D3, 9220, Aalborg, Denmark,
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Diagnosis and management of neuropathic pain: Review of literature and recommendations of the Polish Association for the Study of Pain and the Polish Neurological Society – Part Two. Neurol Neurochir Pol 2014; 48:423-35. [DOI: 10.1016/j.pjnns.2014.11.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 11/05/2014] [Accepted: 11/06/2014] [Indexed: 11/18/2022]
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