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Hasoon J, Vu PD, Mousa B, Markaryan AR, Sarwary ZB, Pinkhasova D, Chen GH, Gul F, Robinson CL, Simopoulos TT, Gill J, Viswanath O. Device-Related Complications Associated with Cylindrical Lead Spinal Cord Stimulator Implants: A Comprehensive Review. Curr Pain Headache Rep 2024:10.1007/s11916-024-01280-0. [PMID: 38850491 DOI: 10.1007/s11916-024-01280-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/30/2024] [Indexed: 06/10/2024]
Abstract
PURPOSE OF REVIEW Spinal cord stimulation (SCS) is an increasingly utilized therapy for the treatment of neuropathic pain conditions. Though minimally invasive and reversable, there are several important device-related complications that physicians should be aware of before offering this therapy to patients. The aim of this review is to synthesize recent studies in device-related SCS complications pertaining to cylindrical lead implantation and to discuss etiologies, symptoms and presentations, diagnostic evaluation, clinical implications, and treatment options. RECENT FINDINGS Device-related complications are more common than biologic complications. Device-related complications covered in this review include lead migration, lead fracture, lead disconnection, generator failure, loss of charge, generator flipping, hardware related pain, and paresthesia intolerance. The use of SCS continues to be an effective option for neuropathic pain conditions. Consideration of complications prior to moving forward with SCS trials and implantation is a vital part of patient management and device selection. Knowledge of these complications can provide physicians and other healthcare professionals the ability to maximize patient outcomes.
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Affiliation(s)
- Jamal Hasoon
- Department of Anesthesiology, Critical Care and Pain Medicine, McGovern Medical School, The University of Texas Health Science Center at Houston, TX, USA.
| | - Peter D Vu
- Department of Physical Medicine and Rehabilitation, McGovern Medical School, The University of Texas Health Science Center at Houston, TX, USA
| | - Bakir Mousa
- University of Arizona College of Medicine, Phoenix, AZ, USA
| | | | | | | | - Grant H Chen
- Department of Anesthesiology, Critical Care and Pain Medicine, McGovern Medical School, The University of Texas Health Science Center at Houston, TX, USA
| | - Farah Gul
- Department of Internal Medicine, Khyber Medical College, Peshawar, Pakistan
| | - Christopher L Robinson
- Department of Anesthesiology, Critical Care, and Pain Medicine, Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Thomas T Simopoulos
- Department of Anesthesiology, Critical Care, and Pain Medicine, Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Jatinder Gill
- Department of Anesthesiology, Critical Care, and Pain Medicine, Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Omar Viswanath
- Department of Anesthesiology, Creighton University School of Medicine, Phoenix, AZ, USA
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Krog L, Maloney J, Pew S, Adeleye O, Johnson B, Glenn B, Gill B, Tieppo Francio V, Pagan-Rosado R, Whitney M, Sinha N, Strand N. Cervical Spinal Cord Stimulation: A Review. Curr Pain Headache Rep 2024; 28:239-249. [PMID: 38147282 DOI: 10.1007/s11916-023-01200-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/04/2023] [Indexed: 12/27/2023]
Abstract
PURPOSE OF REVIEW This literature review critically examines existing studies on cervical spinal cord stimulation (cSCS) for the treatment of chronic pain. The objective is to evaluate the current evidence, identify knowledge gaps, and collate data to inform clinical decision-making and suggest future research avenues. The review covers indications, contraindications, surgical and anesthetic approaches, trials, efficacy, and complications of cSCS. RECENT FINDINGS Recent advancements highlight the evolving role of cSCS in chronic pain management. New neuromodulation techniques involve optimal placement of leads based on the pain's innervation level, maximizing therapeutic outcomes. Contemporary studies underscore the broadening benefits of cSCS, including enhanced functional abilities and sleep quality. However, alongside these innovations come challenges; emerging data bring attention to complications such as hardware issues and infections. Significantly, modern research emphasizes the crucial role of accurate patient selection, factoring in prior therapy responses and comprehensive evaluations. cSCS emerges as a promising tool for chronic pain management, with benefits beyond mere pain relief. As surgical techniques, patient selection criteria, and postoperative care refine, the potential of cSCS expands to benefit a broader patient demographic. However, further comprehensive research is necessary to enhance its application, validate its role earlier in treatment, and ultimately ameliorate the lives of those with chronic pain.
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Affiliation(s)
- Lucky Krog
- Mayo Clinic Alix School of Medicine, Scottsdale, AZ, USA.
| | | | - Scott Pew
- Division of Pain Medicine, Mayo Clinic, Phoenix, AZ, USA
| | | | - Brooks Johnson
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Phoenix, AZ, USA
| | - Brett Glenn
- College of Medicine, University of Arkansas for Medical Sciences, Fayetteville, AR, USA
| | - Benjamin Gill
- Department of Anesthesiology and Pain Medicine, University of Utah, Salt Lake City, UT, USA
| | - Vinicius Tieppo Francio
- University of Kansas Medical Center, Department of Anesthesiology and Pain Medicine, Kansas City, KS, USA
| | | | | | - Neil Sinha
- Mayo Clinic Alix School of Medicine, Scottsdale, AZ, USA
| | - Natalie Strand
- Division of Pain Medicine, Mayo Clinic, Phoenix, AZ, USA
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Shanthanna H, Eldabe S, Provenzano DA, Bouche B, Buchser E, Chadwick R, Doshi TL, Duarte R, Hunt C, Huygen FJPM, Knight J, Kohan L, North R, Rosenow J, Winfree CJ, Narouze S. Evidence-based consensus guidelines on patient selection and trial stimulation for spinal cord stimulation therapy for chronic non-cancer pain. Reg Anesth Pain Med 2023; 48:273-287. [PMID: 37001888 PMCID: PMC10370290 DOI: 10.1136/rapm-2022-104097] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 01/18/2023] [Indexed: 04/03/2023]
Abstract
Spinal cord stimulation (SCS) has demonstrated effectiveness for neuropathic pain. Unfortunately, some patients report inadequate long-term pain relief. Patient selection is emphasized for this therapy; however, the prognostic capabilities and deployment strategies of existing selection techniques, including an SCS trial, have been questioned. After approval by the Board of Directors of the American Society of Regional Anesthesia and Pain Medicine, a steering committee was formed to develop evidence-based guidelines for patient selection and the role of an SCS trial. Representatives of professional organizations with clinical expertize were invited to participate as committee members. A comprehensive literature review was carried out by the steering committee, and the results organized into narrative reports, which were circulated to all the committee members. Individual statements and recommendations within each of seven sections were formulated by the steering committee and circulated to members for voting. We used a modified Delphi method wherein drafts were circulated to each member in a blinded fashion for voting. Comments were incorporated in the subsequent revisions, which were recirculated for voting to achieve consensus. Seven sections with a total of 39 recommendations were approved with 100% consensus from all the members. Sections included definitions and terminology of SCS trial; benefits of SCS trial; screening for psychosocial characteristics; patient perceptions on SCS therapy and the use of trial; other patient predictors of SCS therapy; conduct of SCS trials; and evaluation of SCS trials including minimum criteria for success. Recommendations included that SCS trial should be performed before a definitive SCS implant except in anginal pain (grade B). All patients must be screened with an objective validated instrument for psychosocial factors, and this must include depression (grade B). Despite some limitations, a trial helps patient selection and provides patients with an opportunity to experience the therapy. These recommendations are expected to guide practicing physicians and other stakeholders and should not be mistaken as practice standards. Physicians should continue to make their best judgment based on individual patient considerations and preferences.
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Affiliation(s)
| | - Sam Eldabe
- James Cook University Hospital, Middlesbrough, UK
| | | | | | - Eric Buchser
- Pain Management and Neuromodulation Centre, EHC, Morges, Switzerland
- Pain, EHC, Morges, Switzerland
| | | | - Tina L Doshi
- Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Rui Duarte
- Department of Health Data Science, University of Liverpool, Liverpool, UK
| | - Christine Hunt
- Anesthesiology - Pain Medicine, Mayo Clinic in Florida, Jacksonville, Florida, USA
| | | | - Judy Knight
- Summa Western Reserve Hospital, Cuyahoga Falls, Ohio, USA
| | - Lynn Kohan
- Department of Anesthesiology, University of Virginia, Charlottesville, Virginia, USA
| | - Richard North
- Neurosurgery, Anesthesiology and Critical Care Medicine (ret.), Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Joshua Rosenow
- Department of Neurological Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | | | - Samer Narouze
- Center for Pain Medicine, Summa Western Reserve Hospital, Cuyahoga Falls, Ohio, USA
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Shanthanna H, Eldabe S, Provenzano DA, Chang Y, Adams D, Kashir I, Goel A, Tian C, Couban RJ, Levit T, Hagedorn JM, Narouze S. Role of patient selection and trial stimulation for spinal cord stimulation therapy for chronic non-cancer pain: a comprehensive narrative review. Reg Anesth Pain Med 2023; 48:251-272. [PMID: 37001887 DOI: 10.1136/rapm-2022-103820] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 08/22/2022] [Indexed: 04/03/2023]
Abstract
Background/importancePatient selection for spinal cord stimulation (SCS) therapy is crucial and is traditionally performed with clinical selection followed by a screening trial. The factors influencing patient selection and the importance of trialing have not been systematically evaluated.ObjectiveWe report a narrative review conducted to synthesize evidence regarding patient selection and the role of SCS trials.Evidence reviewMedline, EMBASE and Cochrane databases were searched for reports (any design) of SCS in adult patients, from their inception until March 30, 2022. Study selection and data extraction were carried out using DistillerSR. Data were organized into tables and narrative summaries, categorized by study design. Importance of patient variables and trialing was considered by looking at their influence on the long-term therapy success.FindingsAmong 7321 citations, 201 reports consisting of 60 systematic reviews, 36 randomized controlled trials (RCTs), 41 observational studies (OSs), 51 registry-based reports, and 13 case reports on complications during trialing were included. Based on RCTs and OSs, the median trial success rate was 72% and 82%, and therapy success was 65% and 61% at 12 months, respectively. Although several psychological and non-psychological determinants have been investigated, studies do not report a consistent approach to patient selection. Among psychological factors, untreated depression was associated with poor long-term outcomes, but the effect of others was inconsistent. Most RCTs except for chronic angina involved trialing and only one RCT compared patient selection with or without trial. The median (range) trial duration was 10 (0–30) and 7 (0–56) days among RCTs and OSs, respectively.ConclusionsDue to lack of a consistent approach to identify responders for SCS therapy, trialing complements patient selection to exclude patients who do not find the therapy helpful and/or intolerant of the SCS system. However, more rigorous and large studies are necessary to better evaluate its role.
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Affiliation(s)
| | - Sam Eldabe
- James Cook University Hospital, Middlesbrough, UK
| | | | - Yaping Chang
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Daniel Adams
- Center for Pain Medicine, Summa Western Reserve Hospital, Cuyahoga Falls, Ohio, USA
| | - Imad Kashir
- University of Waterloo, Waterloo, Ontario, Canada
| | - Akash Goel
- Anesthesiology & Pain Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Chenchen Tian
- Anesthesiology & Pain Medicine, University of Toronto, Toronto, Ontario, Canada
| | | | - Tal Levit
- Michael G DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Jonathan M Hagedorn
- Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Samer Narouze
- Center for Pain Medicine, Summa Western Reserve Hospital, Cuyahoga Falls, Ohio, USA
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Hasoon J, Robinson C, Urits I, Viswanath O, Kaye AD. Utilizing 10kHz Stimulation to Salvage a Failed Low Frequency Spinal Cord Stimulation Trial. Orthop Rev (Pavia) 2023; 15:57624. [PMID: 36776275 PMCID: PMC9907322 DOI: 10.52965/001c.57624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Spinal cord stimulation (SCS) is a viable treatment option for chronic pain. One of the primary indications for SCS implantation is persistent pain after spinal surgery. Studies have demonstrated that these patients have a better response to SCS over conservative management or repeat surgery. Traditional SCS therapy uses parasthesias to overlap a patient's pain pattern and provide relief, though some patients find this uncomfortable. To avoid the use of paresthesias, a 10kHz waveform can be utilized to provide a subthreshold level of high frequency stimulation to provide superior pain relief without paresthesias. Additionally, 10kHz stimulation may be used to salvage therapy when other forms of SCS have failed. Here, we present a case in which a patient was switched from traditional SCS to 10kHz in the middle of a SCS trial with lead placement revision to salvage SCS therapy.
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Affiliation(s)
- Jamal Hasoon
- Department of Anesthesia and Pain Medicine UTHealth McGovern Medical School
| | - Christopher Robinson
- Department of Anesthesia, Critical Care, and Pain Medicine, Beth Israel Deaconess Medical Center Harvard Medical School
| | - Ivan Urits
- Department of Anesthesia and Pain Management Louisiana State University Health Sciences Center
| | - Omar Viswanath
- Department of Anesthesia and Pain Management Louisiana State University Health Sciences Center
| | - Alan D Kaye
- Department of Anesthesia and Pain Management Louisiana State University Health Sciences Center
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Gill JS, Kohan LR, Hasoon J, Urits I, Viswanath O, Cai VL, Yazdi C, Aner MM, Kaye AD, Simopoulos TT. A Survey on the Choice of Spinal Cord Stimulation Parameters and Implantable Pulse Generators and on Reasons for Explantation. Orthop Rev (Pavia) 2022; 14:39648. [PMID: 36381501 PMCID: PMC9662606 DOI: 10.52965/001c.39648] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2023] Open
Abstract
OBJECTIVE Spinal Cord Stimulation (SCS) is a vital treatment for chronic intractable pain. In the last few years, the field has undergone dramatic changes in new waveform and frequency introduction as well as device miniaturization. It is important to understand contemporary practice patterns regarding these parameters. METHODS We surveyed the active membership of Spine Intervention Society (SIS), and American Society of Regional Anesthesia (ASRA) on their practices regarding various aspects of Spinal Cord Stimulation therapy. Here we report on SCS waveform usage, battery types, and causes of explant in this cohort of providers. RESULTS There was similar degree of usage of tonic, burst, and 10 kHz usage at 71.5%, 74.1% and 61.7% respectively. Dorsal root ganglion stimulation was used by 32.6% and other modes of stimulation by 13.5%. Rechargeable systems were often or always used by 67.2% whereas 10% never used a rechargeable system. Most common cause of explant was loss of effectiveness, reported by 53.7%. CONCLUSION There has been significant adoption of new waveforms in daily practice of spinal cord stimulation therapy and there is robust mixed usage of new waveforms and frequencies. Rechargeable systems are the most commonly used but primary cell is also used in significant numbers. Loss of efficacy remains the most common cause of explant for the majority of practitioners. This survey establishes practice patterns of SCS usage regarding these important variables against which future changes can be gauged.
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Affiliation(s)
- Jatinder S Gill
- Beth Israel Deaconess Medical Center, Department of Anesthesia, Critical Care, and Pain Medicine, Harvard Medical School, Boston, MA
| | - Lynn R Kohan
- University of Virginia Medical Center, Department of Anesthesia, Critical Care, and Pain Medicine, Charlottesville, VA
| | - Jamal Hasoon
- Beth Israel Deaconess Medical Center, Department of Anesthesia, Critical Care, and Pain Medicine, Harvard Medical School, Boston, MA
- UTHealth McGovern Medical School, Department of Anesthesia and Pain Medicine, Houston, TX
| | - Ivan Urits
- Beth Israel Deaconess Medical Center, Department of Anesthesia, Critical Care, and Pain Medicine, Harvard Medical School, Boston, MA
- Louisiana State University Health Shreveport, Department of Anesthesiology, Shreveport, LA
| | - Omar Viswanath
- Louisiana State University Health Shreveport, Department of Anesthesiology, Shreveport, LA
- Valley Anesthesiology and Pain Consultants, Envision Physician Services, Phoenix, AZ
- Creighton University School of Medicine, Department of Anesthesiology, Omaha, NE
- University of Arizona College of Medicine Phoenix, Department of Anesthesiology, Phoenix, AZ
| | - Viet L Cai
- Beth Israel Deaconess Medical Center, Department of Anesthesia, Critical Care, and Pain Medicine, Harvard Medical School, Boston, MA
| | - Cyrus Yazdi
- Beth Israel Deaconess Medical Center, Department of Anesthesia, Critical Care, and Pain Medicine, Harvard Medical School, Boston, MA
| | - Musa M Aner
- Dartmouth-Hitchcock Medical Center, Department of Anesthesia, Critical Care, and Pain Medicine, Dartmouth Medical School, Lebanon, NH
| | - Alan D Kaye
- Louisiana State University Health Shreveport, Department of Anesthesiology, Shreveport, LA
| | - Thomas T Simopoulos
- Beth Israel Deaconess Medical Center, Department of Anesthesia, Critical Care, and Pain Medicine, Harvard Medical School, Boston, MA
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Hasoon J, Urits I, Mahmood S, Kaye AD. Restoring Successful Spinal Cord Stimulation Therapy for a Patient with Severe Pocket Pain Utilizing Nalu Micro-Implantable Pulse Generator. Orthop Rev (Pavia) 2022; 14:35326. [PMID: 35769659 PMCID: PMC9235421 DOI: 10.52965/001c.35326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 03/29/2022] [Indexed: 05/02/2024] Open
Abstract
Spinal cord stimulation (SCS) is a commonly utilized therapy for the treatment of neuropathic pain conditions. The primary indications for SCS therapy are post-laminectomy syndrome as well as complex regional pain syndrome. SCS therapy is minimally invasive and reversible. It involves the implantation of percutaneous or paddle leads along with a surgically implanted pulse generator (IPG). Severe pocket pain from the IPG is a well-known complication following SCS implants that can be challenging to treat and can lead to an explant of the SCS system. We present the case of a patient with post-laminectomy syndrome who underwent an explant of her SCS system due to severe pocket pain complaints. The patient was successfully reimplanted with a Nalu micro-implantable pulse generator for SCS therapy with 75% improvement in her post-laminectomy pain complaints with no complaints of pocket pain.
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Affiliation(s)
| | - Ivan Urits
- Department of Anesthesiology, Louisiana State University Health Sciences Center; Southcoast Physicians Group Pain Medicine, Southcoast Health
| | - Syed Mahmood
- Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School
| | - Alan D Kaye
- Department of Anesthesiology, Louisiana State University Health Sciences Center Shreveport
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Southerland WA, Hasoon J, Urits I, Viswanath O, Simopoulos TT, Imani F, Karimi-Aliabadi H, Aner MM, Kohan L, Gill J. Dural Puncture During Spinal Cord Stimulator Lead Insertion: Analysis of Practice Patterns. Anesth Pain Med 2022; 12:e127179. [PMID: 36158140 PMCID: PMC9364517 DOI: 10.5812/aapm-127179] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 04/29/2022] [Indexed: 12/16/2022] Open
Abstract
Background Spinal cord stimulation (SCS) is an important modality for intractable pain not amenable to less conservative measures. During percutaneous SCS lead insertion, a critical step is safe access to the epidural space, which can be complicated by a dural puncture. Objectives In this review, we present and analyze the practices patterns in the event of a dural puncture during a SCS trial or implantation. Methods We conducted a survey of the practice patterns regarding spinal cord stimulation therapy. The survey was administered to members of the Spine Intervention Society and American Society of Regional Anesthesia specifically inquiring decision making in case of inadvertent dural puncture during spinal cord stimulator lead insertion. Results A maximum of 193 responded to a question regarding dural punctures while performing a SCS trial and 180 responded to a question regarding dural punctures while performing a SCS implantation. If performing a SCS trial and a dural puncture occurs, a majority of physicians chose to continue the procedure at a different level (56.99%), followed by abandoning the procedure (27.98%), continuing at the same level (10.36%), or choosing another option (4.66%). Similarly, if performing a permanent implantation and a dural puncture occurs, most physicians chose to continue the procedure at a different level (61.67%), followed by abandoning the procedure (21.67%), continuing at the same level (10.56%), or choosing another option (6.11%). Conclusions Whereas the goals of the procedure would support abandoning the trial but continuing with the permanent in case of inadvertent dural puncture, we found that decision choices were minimally influenced by whether the dural puncture occurred during the trial or the permanent implant. The majority chose to continue with the procedure at a different level while close to a quarter chose to abandon the procedure. This article sets a time stamp in practice patterns from March 20, 2020 to June 26, 2020. These results are based on contemporary SCS practices as demonstrated by this cohort, rendering the options of abandoning or continuing after dural puncture as reasonable methods. Though more data is needed to provide a consensus, providers can now see how others manage dural punctures during SCS procedures.
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Affiliation(s)
- Warren A. Southerland
- Department of Anesthesia, Beth Israel Deaconess Medical Center, Critical Care, and Pain Medicine; Harvard Medical School, Boston, MA, USA
| | - Jamal Hasoon
- Department of Anesthesia, Beth Israel Deaconess Medical Center, Critical Care, and Pain Medicine; Harvard Medical School, Boston, MA, USA
- Department of Anesthesia and Pain Medicine, University of Texas Medical Branch, Galveston, TX, USA
- Pain Specialists of America, Austin, TX, USA
- Corresponding Author: Department of Anesthesia, Beth Israel Deaconess Medical Center, Critical Care, and Pain Medicine; Harvard Medical School, Boston, MA, USA.
| | - Ivan Urits
- Department of Anesthesia, Beth Israel Deaconess Medical Center, Critical Care, and Pain Medicine; Harvard Medical School, Boston, MA, USA
- Department of Anesthesia and Pain Management, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - Omar Viswanath
- Department of Anesthesia and Pain Management, Louisiana State University Health Sciences Center, Shreveport, LA, USA
- Valley Anesthesiology and Pain Consultants, Envision Physician Services, Phoenix, AZ, USA
- Department of Anesthesiology, Phoenix, University of Arizona College of Medicine–Phoenix, AZ, USA
| | - Thomas T. Simopoulos
- Department of Anesthesia, Beth Israel Deaconess Medical Center, Critical Care, and Pain Medicine; Harvard Medical School, Boston, MA, USA
| | - Farnad Imani
- Pain Research Center, Department of Anesthesiology and Pain Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Hakimeh Karimi-Aliabadi
- Department of Anesthesiology, Kerman University of Medical Sciences, Kerman, Iran
- Corresponding Author: Department of Anesthesiology, Kerman University of Medical Sciences, Kerman, Iran.
| | - Musa M Aner
- Dartmouth-Hitchcock Medical Center, Center for Pain and Spine, Geisel School of Medicine, Lebanon, NH, USA
| | - Lynn Kohan
- Pain Management Center; University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Jatinder Gill
- Department of Anesthesia, Beth Israel Deaconess Medical Center, Critical Care, and Pain Medicine; Harvard Medical School, Boston, MA, USA
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