Chronic Neuropathic Pain and FibromyalgiaPhase 4NCT04123652

Ambulatory Infusions of Lidocaine and Ketamine for Management of Chronic Pain

A Phase 4 study testing Lidocaine Hydrochloride 2% Intravenous Solution, DIN 02421992 in people with Chronic Neuropathic Pain and Fibromyalgia, run by Allevio Pain Management Clinic at 1 site in Canada.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record

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Trial summary

Who is it for?: Ages 18 to 90 years
Conditions the study is for: Chronic Neuropathic Pain and Fibromyalgia
What is being tested?: Lidocaine Hydrochloride 2% Intravenous Solution, DIN 02421992
Type of treatment: Injection or infusion
Could I receive a placebo?: No, everyone receives an active treatment
How many people: 162 participants
Where: 1 siteCanada
Study dates: 5 Nov 2017to 11 Nov 2020
Phase: Phase 4
Are there results?: None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

Ages 18 to 90 years
All sexes
No healthy volunteers
Adult, Older adult

Who may be able to join

Pain duration > 3 months;
Multifocal and/or non-dermatomal neuropathic pain per Pain Diagram;
Failed medical management with at least 2 neuromodulation agents (e.g., gabapentinoids, antidepressants, cannabinoids);
Neuropathic component (12 or more points on S-LANSS);

Who cannot join

Non-English speakers;
Refusal to sign informed consent;
Allergy to ketamine and/or lidocaine;
Known relative contraindications to ketamine use which include poorly controlled systemic illnesses: hypertension, hyperthyroidism, ischemic heart disease, heart failure, psychiatric comorbidity (e.g., psychosis, schizophrenia, dissociative state);
Known contraindication to lidocaine use which include current symptomatic or clinically significant brady- or tachyarrhythmia, systolic blood pressure <90 or >180 mmHg;
Scheduled interventions targeting neuropathic pain: epidural injections, peripheral nerve blocks, Bier block, radiofrequency of dorsal root ganglia and peripheral nerves, additional lidocaine or ketamine infusions;

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Newly added analgesic or neuromodulating medications within 30 days;
Recently performed neuromodulating interventions within 90 days;
Previous lidocaine-ketamine, lidocaine or ketamine infusion within 6 months;
Acute intoxication or active illegal substance abuse;

Trial locations and contacts

1 site in 1 country.

Canada1 site

Allevio Pain Management Clinic
Toronto, Ontario, M3B 3S6

Other trials in Canada

About this study

Official title: Ambulatory Infusions of Lidocaine and Ketamine for Management of Chronic Pain: an Observational Prospective Study

As lidocaine and ketamine provide analgesia by acting on different molecular pathways, administering them together may produce synergistic effects, which can allow for using a lower dose of each medication and thereby reducing the corresponding side effects. To the investigator's knowledge, despite the common practice of multimodal analgesia, lidocaine-ketamine infusions have never been studied prospectively in an out of hospital setting to treat neuropathic pain. The aim of the present study is to evaluate the effectiveness of the current routine practice of lidocaine-ketamine infusions conducted at Allevio Pain Management Clinic, a large outpatient community based chronic pain management facility. Lidocaine-ketamine infusions are prescribed to patients that have pain that is considered to be neuropathic for which standard anti-neuropathic medications have been ineffective or poorly tolerated by patients. A prospective longitudinal study.

Read the detailed description

Study objectives

To evaluate effectiveness of lidocaine-ketamine infusions in reducing neuropathic pain, as assessed using the Revised Pain Quality Assessment Scale (PQAS-R) and Short Form Brief Pain Inventory (BPI-SF).
To evaluate the effects of lidocaine-ketamine infusions on the measures of Global Improvement and Satisfaction Score, Pain Self-Efficacy Questionnaire (PSEQ), Pain Catastrophic Scale (PCS), Beck Depression Inventory (BDI), and Patient self-reported perceived duration of effect (PSPDE).
To assess, analyze, and report adverse events

The study will be conducted per IMMPACT recommendations (17). Multi variable parameters will be captured: pain unpleasantness, physical function, emotional function, global improvement and satisfaction with treatment, adverse events and disposition. Additional instruments will be used in the triage process and follow-up (S-LANSS, PSEQ).

Number of subjects: all eligible consecutive patients accepted for lidocaine-ketamine infusions over period of 6 months.

Patients with multi focal and/or non-dermatomal pain with neuropathic component will be included.

Dosing and infusion orders are completed by one of the physician-investigators prior to patient arrival based on body weight, and modified if required after individual evaluation. Based on published literature and clinical impression, higher doses seem to be more effective and result in longer pain relief. Therefore, subsequent infusion doses will be increased to the maximally tolerated doses (i.e. minimal side effects).

Doses will be calculated using the following:

Lidocaine - initial dose of 5.0 mg/kg +/- 1.0 mg/kg (based on actual weight, up to maximum dose 600 mg) over 45 minutes, followed by increases of 0.5 mg/kg each infusion based on tolerability of side effects, not to exceed 7 mg/kg or 600 mg.
Ketamine - initial dose of 0.1 mg/kg (based on actual weight) over 45 minutes (rounded to nearest 5 mg, up to maximum 15 mg), increased by 0.1 mg/kg (rounded to nearest 5 mg) each infusion based on tolerability of side effects.

Standard clinic procedure will be followed for completing the infusions and managing side effects. The infusion will be initiated at 360 ml/hour for planned completion in 45 minutes, rate adjusted if side effects develop. Total doses of medication are recorded in the medical record.

Data collection and Management All study tools will be completed by patients online using, or in the clinic RedCap system. RedCap is a mature, secure web application for building and managing online surveys and databases (Vanderbilt University). The system is secured by SSL protocol and data is encrypted. Patients will be contacted via Email with a secure link to RedCap database, or if they would not be able to do it at home research, they can complete the questionnaires with research coordinator's assistant in secure computers at the clinic. Participant will receive reminders about upcoming visits and promoted to complete the follow-up forms. Allevio data protection is also SSL enabled and secured by SHA256, and they are issued by Rapid SSL and purchased through Ceerts4Less.

Conditions: Chronic Neuropathic Pain and Fibromyalgia
Being tested: Lidocaine Hydrochloride 2% Intravenous Solution, DIN 02421992
Keywords: Neuropathic pain, Fibromyalgia, Lidocaine infusion, Ketamine infusion, Chronic pain
Medical subject headings: Fibromyalgia, Neuralgia, Chronic Pain

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

Lidocaine Hydrochloride 2% Intravenous Solution, DIN 02421992Drug
Also called ketamine Hydrochloride, Serial# 5751304560, DIN 02246796
An intravenous will be started. • Lidocaine - initial dose of 5.0 mg/kg +/- 1.0 mg/kg (based on actual weight, up to maximum dose 600 mg) over 45 minutes, followed by increases of 0.5 mg/kg each infusion based on tolerability of side effects, not to exceed 7 mg/kg or 600 mg.
- Ketamine - initial dose of 0.1 mg/kg (based on actual weight) over 45 minutes (rounded to nearest 5 mg, up to maximum 15 mg), increased by 0.1 mg/kg (rounded to nearest 5 mg) each infusion based on tolerability of side effects During the infusion patient will be monitored by another MD for BP, PR, PO2. Patients will not be allowed to drive for 24 hours.

Study groups in NCT04123652
Study group	Role	What they receive
Lidocaine and ketamine infusion	Other	Not described Receives: Drug: Lidocaine Hydrochloride 2% Intravenous Solution, DIN 02421992

What is being measured

The primary outcome is the main question the study is designed to answer.

Evaluation of effectiveness of lidocaine-ketamine infusions: PQAS-R
Primary outcome measure: relative change on the PQAS-R. Moderate clinically important improvement is considered as 30% reduction (Dworkin et al., 2008)
Measured: 4 weeks after the first infusion and every 4 weeks up to 36 weeks

Secondary outcomes (8)

Effect of lidocaine and ketamine infusion on BDI
Effect of lidocaine and ketamine infusion on Beck's Depression Inventory
Measured: Baseline to end-of-study every 4 weeks up to 36 weeks
Effect of lidocaine and ketamine infusion on PGIC
Effect of lidocaine and ketamine infusion on Pain Global Improvement and Satisfaction
Measured: Baseline to end-of-study every 4 weeks up to 36 weeks
Effect of lidocaine and ketamine infusion on BPI
Effect of lidocaine and ketamine infusion on Brief Pain Inventory
Measured: Baseline to end-of-study every 4 weeks up to 36 weeks
Effect of lidocaine and ketamine infusion on PQAS-R
Effect of lidocaine and ketamine infusion on Revised Pain Quality Assessment Scale
Measured: Baseline to end-of-study every 4 weeks up to 36 weeks
Effect of lidocaine and ketamine infusion on PSEQ
Effect of lidocaine and ketamine infusion on Patient Self-Efficacy Questionnaire
Measured: Baseline to end-of-study every 4 weeks up to 36 weeks
Effect of lidocaine and ketamine infusion on PCS
Effect of lidocaine and ketamine infusion on Pain Catastrophizing Scale
Measured: Baseline to end-of-study every 4 weeks up to 36 weeks
Effect of lidocaine and ketamine infusion on PSPDE
Effect of lidocaine and ketamine infusion on viii. Patient self-reported perceived duration of effect
Measured: Baseline to end-of-study every 4 weeks up to 36 weeks
Effect of lidocaine and ketamine on narcotic consumption
Effect of lidocaine and ketamine infusion on narcotic consumption
Measured: Baseline to end-of-study up to 36 weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

5 Nov 201711 Nov 2020

First posted11 Oct 2019
Study start5 Nov 2017
Primary completion11 Nov 2020
Study completion11 Nov 2020

Resources

Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
Publications (19)Papers the sponsor has linked to this study.
Other trials for Chronic Neuropathic Pain and FibromyalgiaStudies of the same condition, open and under way.
What the trial phases meanHow a treatment moves from first tests in people to approval.

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design

Study type: Interventional
Phase: Phase 4
Primary purpose: Treatment
Allocation: Not applicable
Intervention model: Single group
Model description: Patients are assessed for eligibility on their first visit (screening visit); additional visits may be required to address patient questions and collect baseline data. Qualified participants will be scheduled for their 5 infusions at 8 week intervals. Dosing and infusion orders are completed by one of the physician-investigators prior to patient arrival based on body weight, and modified if required after individual evaluation. Based on published literature and clinical impression, higher doses seem to be more effective and result in longer pain relief. Therefore, subsequent infusion doses will be increased to the maximally tolerated doses (i.e. minimal side effects). Participants will be asked to complete the follow-up questionnaires every four weeks starting from their first infusion up to 8 times. On their last study visit, 4 weeks following the last infusion, participants will have an exit interview in addition to completing study measures.
Masking: None (open label)
Enrolment: 162 participants (actual)

IDs, dates and publications

ClinicalTrials.gov ID: NCT04123652
Sponsor's protocol ID: 16124-11:10:3610-082018
Status last verified: Nov 2017
First submitted: 9 Oct 2019
Last updated: 4 Dec 2020
Results posted: No
Data monitoring committee: No
FDA-regulated drug: No
FDA-regulated device: No

Publications

Dworkin RH, Turk DC, Wyrwich KW, Beaton D, Cleeland CS, Farrar JT, Haythornthwaite JA, Jensen MP, Kerns RD, Ader DN, Brandenburg N, Burke LB, Cella D, Chandler J, Cowan P, Dimitrova R, Dionne R, Hertz S, Jadad AR, Katz NP, Kehlet H, Kramer LD, Manning DC, McCormick C, McDermott MP, McQuay HJ, Patel S, Porter L, Quessy S, Rappaport BA, Rauschkolb C, Revicki DA, Rothman M, Schmader KE, Stacey BR, Stauffer JW, von Stein T, White RE, Witter J, Zavisic S. Interpreting the clinical importance of treatment outcomes in chronic pain clinical trials: IMMPACT recommendations. J Pain. 2008 Feb;9(2):105-21. doi: 10.1016/j.jpain.2007.09.005. Epub 2007 Dec 11.
PubMed 18055266
BONICA JJ. The management of pain of cancer. J Mich State Med Soc. 1953 Mar;52(3):284-90. No abstract available.
PubMed 13035388
Vos T, Flaxman AD, Naghavi M, Lozano R, Michaud C, Ezzati M, Shibuya K, Salomon JA, Abdalla S, Aboyans V, Abraham J, Ackerman I, Aggarwal R, Ahn SY, Ali MK, Alvarado M, Anderson HR, Anderson LM, Andrews KG, Atkinson C, Baddour LM, Bahalim AN, Barker-Collo S, Barrero LH, Bartels DH, Basanez MG, Baxter A, Bell ML, Benjamin EJ, Bennett D, Bernabe E, Bhalla K, Bhandari B, Bikbov B, Bin Abdulhak A, Birbeck G, Black JA, Blencowe H, Blore JD, Blyth F, Bolliger I, Bonaventure A, Boufous S, Bourne R, Boussinesq M, Braithwaite T, Brayne C, Bridgett L, Brooker S, Brooks P, Brugha TS, Bryan-Hancock C, Bucello C, Buchbinder R, Buckle G, Budke CM, Burch M, Burney P, Burstein R, Calabria B, Campbell B, Canter CE, Carabin H, Carapetis J, Carmona L, Cella C, Charlson F, Chen H, Cheng AT, Chou D, Chugh SS, Coffeng LE, Colan SD, Colquhoun S, Colson KE, Condon J, Connor MD, Cooper LT, Corriere M, Cortinovis M, de Vaccaro KC, Couser W, Cowie BC, Criqui MH, Cross M, Dabhadkar KC, Dahiya M, Dahodwala N, Damsere-Derry J, Danaei G, Davis A, De Leo D, Degenhardt L, Dellavalle R, Delossantos A, Denenberg J, Derrett S, Des Jarlais DC, Dharmaratne SD, Dherani M, Diaz-Torne C, Dolk H, Dorsey ER, Driscoll T, Duber H, Ebel B, Edmond K, Elbaz A, Ali SE, Erskine H, Erwin PJ, Espindola P, Ewoigbokhan SE, Farzadfar F, Feigin V, Felson DT, Ferrari A, Ferri CP, Fevre EM, Finucane MM, Flaxman S, Flood L, Foreman K, Forouzanfar MH, Fowkes FG, Franklin R, Fransen M, Freeman MK, Gabbe BJ, Gabriel SE, Gakidou E, Ganatra HA, Garcia B, Gaspari F, Gillum RF, Gmel G, Gosselin R, Grainger R, Groeger J, Guillemin F, Gunnell D, Gupta R, Haagsma J, Hagan H, Halasa YA, Hall W, Haring D, Haro JM, Harrison JE, Havmoeller R, Hay RJ, Higashi H, Hill C, Hoen B, Hoffman H, Hotez PJ, Hoy D, Huang JJ, Ibeanusi SE, Jacobsen KH, James SL, Jarvis D, Jasrasaria R, Jayaraman S, Johns N, Jonas JB, Karthikeyan G, Kassebaum N, Kawakami N, Keren A, Khoo JP, King CH, Knowlton LM, Kobusingye O, Koranteng A, Krishnamurthi R, Lalloo R, Laslett LL, Lathlean T, Leasher JL, Lee YY, Leigh J, Lim SS, Limb E, Lin JK, Lipnick M, Lipshultz SE, Liu W, Loane M, Ohno SL, Lyons R, Ma J, Mabweijano J, MacIntyre MF, Malekzadeh R, Mallinger L, Manivannan S, Marcenes W, March L, Margolis DJ, Marks GB, Marks R, Matsumori A, Matzopoulos R, Mayosi BM, McAnulty JH, McDermott MM, McGill N, McGrath J, Medina-Mora ME, Meltzer M, Mensah GA, Merriman TR, Meyer AC, Miglioli V, Miller M, Miller TR, Mitchell PB, Mocumbi AO, Moffitt TE, Mokdad AA, Monasta L, Montico M, Moradi-Lakeh M, Moran A, Morawska L, Mori R, Murdoch ME, Mwaniki MK, Naidoo K, Nair MN, Naldi L, Narayan KM, Nelson PK, Nelson RG, Nevitt MC, Newton CR, Nolte S, Norman P, Norman R, O'Donnell M, O'Hanlon S, Olives C, Omer SB, Ortblad K, Osborne R, Ozgediz D, Page A, Pahari B, Pandian JD, Rivero AP, Patten SB, Pearce N, Padilla RP, Perez-Ruiz F, Perico N, Pesudovs K, Phillips D, Phillips MR, Pierce K, Pion S, Polanczyk GV, Polinder S, Pope CA 3rd, Popova S, Porrini E, Pourmalek F, Prince M, Pullan RL, Ramaiah KD, Ranganathan D, Razavi H, Regan M, Rehm JT, Rein DB, Remuzzi G, Richardson K, Rivara FP, Roberts T, Robinson C, De Leon FR, Ronfani L, Room R, Rosenfeld LC, Rushton L, Sacco RL, Saha S, Sampson U, Sanchez-Riera L, Sanman E, Schwebel DC, Scott JG, Segui-Gomez M, Shahraz S, Shepard DS, Shin H, Shivakoti R, Singh D, Singh GM, Singh JA, Singleton J, Sleet DA, Sliwa K, Smith E, Smith JL, Stapelberg NJ, Steer A, Steiner T, Stolk WA, Stovner LJ, Sudfeld C, Syed S, Tamburlini G, Tavakkoli M, Taylor HR, Taylor JA, Taylor WJ, Thomas B, Thomson WM, Thurston GD, Tleyjeh IM, Tonelli M, Towbin JA, Truelsen T, Tsilimbaris MK, Ubeda C, Undurraga EA, van der Werf MJ, van Os J, Vavilala MS, Venketasubramanian N, Wang M, Wang W, Watt K, Weatherall DJ, Weinstock MA, Weintraub R, Weisskopf MG, Weissman MM, White RA, Whiteford H, Wiersma ST, Wilkinson JD, Williams HC, Williams SR, Witt E, Wolfe F, Woolf AD, Wulf S, Yeh PH, Zaidi AK, Zheng ZJ, Zonies D, Lopez AD, Murray CJ, AlMazroa MA, Memish ZA. Years lived with disability (YLDs) for 1160 sequelae of 289 diseases and injuries 1990-2010: a systematic analysis for the Global Burden of Disease Study 2010. Lancet. 2012 Dec 15;380(9859):2163-96. doi: 10.1016/S0140-6736(12)61729-2.
PubMed 23245607
IASP. (2003). How Prevalent Is Chronic Pain? International Association for the Study of Pain. Retrieved from https://www.iasp-pain.org/files/Content/ContentFolders/Publications2/PainClinicalUpdates/Archives/PCU03-2_1390265045864_38.pdf
Goldberg DS, McGee SJ. Pain as a global public health priority. BMC Public Health. 2011 Oct 6;11:770. doi: 10.1186/1471-2458-11-770.
PubMed 21978149
Cho SK, Heiby EM, McCracken LM, Moon DE, Lee JH. Daily functioning in chronic pain: study of structural relations with posttraumatic stress disorder symptoms, pain intensity, and pain avoidance. Korean J Pain. 2011 Mar;24(1):13-21. doi: 10.3344/kjp.2011.24.1.13. Epub 2011 Feb 25.
PubMed 21390174
Wahl AK, Rustoen T, Rokne B, Lerdal A, Knudsen O, Miaskowski C, Moum T. The complexity of the relationship between chronic pain and quality of life: a study of the general Norwegian population. Qual Life Res. 2009 Oct;18(8):971-80. doi: 10.1007/s11136-009-9515-x. Epub 2009 Aug 18.
PubMed 19688608
Gaskin DJ, Richard P. The economic costs of pain in the United States. J Pain. 2012 Aug;13(8):715-24. doi: 10.1016/j.jpain.2012.03.009. Epub 2012 May 16.
PubMed 22607834
Fitzcharles MA, Baerwald C, Ablin J, Hauser W. Efficacy, tolerability and safety of cannabinoids in chronic pain associated with rheumatic diseases (fibromyalgia syndrome, back pain, osteoarthritis, rheumatoid arthritis): A systematic review of randomized controlled trials. Schmerz. 2016 Feb;30(1):47-61. doi: 10.1007/s00482-015-0084-3.
PubMed 26767993
Ballantyne JC, Mao J. Opioid therapy for chronic pain. N Engl J Med. 2003 Nov 13;349(20):1943-53. doi: 10.1056/NEJMra025411. No abstract available.
PubMed 14614170
Noble M, Treadwell JR, Tregear SJ, Coates VH, Wiffen PJ, Akafomo C, Schoelles KM. Long-term opioid management for chronic noncancer pain. Cochrane Database Syst Rev. 2010 Jan 20;2010(1):CD006605. doi: 10.1002/14651858.CD006605.pub2.
PubMed 20091598
IASP. (1994). Part III: Pain Terms, A Current List with Definitions and Notes on Usage. In Classification of Chronic Pain (second ed., pp. 209-214): IASP Press. Retrieved from
van Hecke O, Austin SK, Khan RA, Smith BH, Torrance N. Neuropathic pain in the general population: a systematic review of epidemiological studies. Pain. 2014 Apr;155(4):654-662. doi: 10.1016/j.pain.2013.11.013. Epub 2013 Nov 26.
PubMed 24291734
Campbell, J. N., & Meyer, R. A. (2006). Mechanisms of neuropathic pain. Neuron, 52(1), 77-92. doi:10.1016/j.neuron.2006.09.021 CDC. (2017a). Opioid Overdose. Centers for Disease Control and Prevention. Retrieved from https://www.cdc.gov/drugoverdose/index.html CDC. (2017b). Prescribing Data. Centers for Disease Control and Prevention. Retrieved from https://www.cdc.gov/drugoverdose/data/prescribing.html
Gilron I, Watson CP, Cahill CM, Moulin DE. Neuropathic pain: a practical guide for the clinician. CMAJ. 2006 Aug 1;175(3):265-75. doi: 10.1503/cmaj.060146.
PubMed 16880448

Want to know more?

The sponsor has not listed a contact. The official record may have more details.

Talk to your doctor first and take this page with you. Only the study team can confirm whether you can join.

Questions to ask the study team

What is the study trying to find out?
What would I need to do, and how often would I visit?
Could I receive a placebo instead of the treatment?
What are the possible risks and benefits for me?
Will it cost me anything? Are travel or time paid for?
Can I keep seeing my own doctor during the study?
What happens when the study ends?

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Study at a glance

From the registry record, last updated by the sponsor on 4 Dec 2020. Recruitment status is as the sponsor reported it: confirm with the study team.

Official title: Ambulatory Infusions of Lidocaine and Ketamine for Management of Chronic Pain: an Observational Prospective Study
ClinicalTrials.gov ID: NCT04123652
Acronym / sponsor ID: 16124-11:10:3610-082018
Conditions: Chronic Neuropathic Pain and Fibromyalgia
Keywords: Neuropathic pain, Fibromyalgia, Lidocaine infusion, Ketamine infusion, Chronic pain
Phase: Phase 4
Study type: Interventional
Recruitment status: Completed
Enrolment: 162 participants (actual)
Lead sponsor: Allevio Pain Management ClinicUniversity, hospital or other
Study start: 5 Nov 2017 (actual)
Primary completion: 11 Nov 2020 (actual)
Study completion: 11 Nov 2020 (actual)
First posted: 11 Oct 2019 (actual)
Results: Not posted in the source record

Clinical summary

The research question as the sponsor registered it. This describes what the study plans to test, not what it found.

Detailed description

Study objectives

To evaluate effectiveness of lidocaine-ketamine infusions in reducing neuropathic pain, as assessed using the Revised Pain Quality Assessment Scale (PQAS-R) and Short Form Brief Pain Inventory (BPI-SF).
To evaluate the effects of lidocaine-ketamine infusions on the measures of Global Improvement and Satisfaction Score, Pain Self-Efficacy Questionnaire (PSEQ), Pain Catastrophic Scale (PCS), Beck Depression Inventory (BDI), and Patient self-reported perceived duration of effect (PSPDE).
To assess, analyze, and report adverse events

Number of subjects: all eligible consecutive patients accepted for lidocaine-ketamine infusions over period of 6 months.

Patients with multi focal and/or non-dermatomal pain with neuropathic component will be included.

Doses will be calculated using the following:

Lidocaine - initial dose of 5.0 mg/kg +/- 1.0 mg/kg (based on actual weight, up to maximum dose 600 mg) over 45 minutes, followed by increases of 0.5 mg/kg each infusion based on tolerability of side effects, not to exceed 7 mg/kg or 600 mg.
Ketamine - initial dose of 0.1 mg/kg (based on actual weight) over 45 minutes (rounded to nearest 5 mg, up to maximum 15 mg), increased by 0.1 mg/kg (rounded to nearest 5 mg) each infusion based on tolerability of side effects.

Study design

Primary purpose: Treatment
Allocation: Not applicable
Intervention model: Single group
Masking: None (open label)
Number of arms: 1
Model description: Patients are assessed for eligibility on their first visit (screening visit); additional visits may be required to address patient questions and collect baseline data. Qualified participants will be scheduled for their 5 infusions at 8 week intervals. Dosing and infusion orders are completed by one of the physician-investigators prior to patient arrival based on body weight, and modified if required after individual evaluation. Based on published literature and clinical impression, higher doses seem to be more effective and result in longer pain relief. Therefore, subsequent infusion doses will be increased to the maximally tolerated doses (i.e. minimal side effects). Participants will be asked to complete the follow-up questionnaires every four weeks starting from their first infusion up to 8 times. On their last study visit, 4 weeks following the last infusion, participants will have an exit interview in addition to completing study measures.

Arm	Type	Receives
Lidocaine and ketamine infusion	Other	Drug: Lidocaine Hydrochloride 2% Intravenous Solution, DIN 02421992

Who may qualify

Ages: 18 to 90 years
Sex: All
Healthy volunteers: Not accepted
Age groups: Adult, Older adult

Key inclusion criteria (4 listed)

Pain duration > 3 months;
Multifocal and/or non-dermatomal neuropathic pain per Pain Diagram;
Failed medical management with at least 2 neuromodulation agents (e.g., gabapentinoids, antidepressants, cannabinoids);
Neuropathic component (12 or more points on S-LANSS);

Key exclusion criteria (10 listed)

Non-English speakers;
Refusal to sign informed consent;
Allergy to ketamine and/or lidocaine;
Known relative contraindications to ketamine use which include poorly controlled systemic illnesses: hypertension, hyperthyroidism, ischemic heart disease, heart failure, psychiatric comorbidity (e.g., psychosis, schizophrenia, dissociative state);
Known contraindication to lidocaine use which include current symptomatic or clinically significant brady- or tachyarrhythmia, systolic blood pressure <90 or >180 mmHg;

Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.

Interventions

Intervention	Type	Arms
Lidocaine Hydrochloride 2% Intravenous Solution, DIN 02421992Also: ketamine Hydrochloride, Serial# 5751304560, DIN 02246796An intravenous will be started. • Lidocaine - initial dose of 5.0 mg/kg +/- 1.0 mg/kg (based on actual weight, up to maximum dose 600 mg) over 45 minutes, followed by increases of 0.5 mg/kg each infusion based on tolerability of side effects, not to exceed 7 mg/kg or 600 mg. • Ketamine - initial dose of 0.1 mg/kg (based on actual weight) over 45 minutes (rounded to nearest 5 mg, up to maximum 15 mg), increased by 0.1 mg/kg (rounded to nearest 5 mg) each infusion based on tolerability of side effects During the infusion patient will be monitored by another MD for BP, PR, PO2. Patients will not be allowed to drive for 24 hours.	Drug	Lidocaine and ketamine infusion

Primary outcome

Evaluation of effectiveness of lidocaine-ketamine infusions: PQAS-R
Time frame: 4 weeks after the first infusion and every 4 weeks up to 36 weeks
Primary outcome measure: relative change on the PQAS-R. Moderate clinically important improvement is considered as 30% reduction (Dworkin et al., 2008)

8 secondary outcomes

Effect of lidocaine and ketamine infusion on BDI
Time frame: Baseline to end-of-study every 4 weeks up to 36 weeks
Effect of lidocaine and ketamine infusion on PGIC
Time frame: Baseline to end-of-study every 4 weeks up to 36 weeks
Effect of lidocaine and ketamine infusion on BPI
Time frame: Baseline to end-of-study every 4 weeks up to 36 weeks
Effect of lidocaine and ketamine infusion on PQAS-R
Time frame: Baseline to end-of-study every 4 weeks up to 36 weeks
Effect of lidocaine and ketamine infusion on PSEQ
Time frame: Baseline to end-of-study every 4 weeks up to 36 weeks
Effect of lidocaine and ketamine infusion on PCS
Time frame: Baseline to end-of-study every 4 weeks up to 36 weeks
Effect of lidocaine and ketamine infusion on PSPDE
Time frame: Baseline to end-of-study every 4 weeks up to 36 weeks
Effect of lidocaine and ketamine on narcotic consumption
Time frame: Baseline to end-of-study up to 36 weeks

Results and safety

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

Research links

Official record on ClinicalTrials.govLast updated by the sponsor 4 Dec 2020.
Background: PubMed 18055266Dworkin RH, Turk DC, Wyrwich KW, Beaton D, Cleeland CS, Farrar JT, Haythornthwaite JA, Jensen MP, Kerns RD, Ader DN, Brandenburg N, Burke LB, Cella D, Chandler J, Cowan P, Dimitrova R, Dionne R, Hertz S, Jadad AR, Katz NP, Kehlet H, Kramer LD, Manning DC, McCormick C, McDermott MP, McQuay HJ, Patel S, Porter L, Quessy S, Rappaport BA, Rauschkolb C, Revicki DA, Rothman M, Schmader KE, Stacey BR, Stauffer JW, von Stein T, White RE, Witter J, Zavisic S. Interpreting the clinical importance of treatment outcomes in chronic pain clinical trials: IMMPACT recommendations. J Pain. 2008 Feb;9(2):105-21. doi: 10.1016/j.jpain.2007.09.005. Epub 2007 Dec 11.
Results publication: PubMed 13035388BONICA JJ. The management of pain of cancer. J Mich State Med Soc. 1953 Mar;52(3):284-90. No abstract available.
Results publication: PubMed 23245607Vos T, Flaxman AD, Naghavi M, Lozano R, Michaud C, Ezzati M, Shibuya K, Salomon JA, Abdalla S, Aboyans V, Abraham J, Ackerman I, Aggarwal R, Ahn SY, Ali MK, Alvarado M, Anderson HR, Anderson LM, Andrews KG, Atkinson C, Baddour LM, Bahalim AN, Barker-Collo S, Barrero LH, Bartels DH, Basanez MG, Baxter A, Bell ML, Benjamin EJ, Bennett D, Bernabe E, Bhalla K, Bhandari B, Bikbov B, Bin Abdulhak A, Birbeck G, Black JA, Blencowe H, Blore JD, Blyth F, Bolliger I, Bonaventure A, Boufous S, Bourne R, Boussinesq M, Braithwaite T, Brayne C, Bridgett L, Brooker S, Brooks P, Brugha TS, Bryan-Hancock C, Bucello C, Buchbinder R, Buckle G, Budke CM, Burch M, Burney P, Burstein R, Calabria B, Campbell B, Canter CE, Carabin H, Carapetis J, Carmona L, Cella C, Charlson F, Chen H, Cheng AT, Chou D, Chugh SS, Coffeng LE, Colan SD, Colquhoun S, Colson KE, Condon J, Connor MD, Cooper LT, Corriere M, Cortinovis M, de Vaccaro KC, Couser W, Cowie BC, Criqui MH, Cross M, Dabhadkar KC, Dahiya M, Dahodwala N, Damsere-Derry J, Danaei G, Davis A, De Leo D, Degenhardt L, Dellavalle R, Delossantos A, Denenberg J, Derrett S, Des Jarlais DC, Dharmaratne SD, Dherani M, Diaz-Torne C, Dolk H, Dorsey ER, Driscoll T, Duber H, Ebel B, Edmond K, Elbaz A, Ali SE, Erskine H, Erwin PJ, Espindola P, Ewoigbokhan SE, Farzadfar F, Feigin V, Felson DT, Ferrari A, Ferri CP, Fevre EM, Finucane MM, Flaxman S, Flood L, Foreman K, Forouzanfar MH, Fowkes FG, Franklin R, Fransen M, Freeman MK, Gabbe BJ, Gabriel SE, Gakidou E, Ganatra HA, Garcia B, Gaspari F, Gillum RF, Gmel G, Gosselin R, Grainger R, Groeger J, Guillemin F, Gunnell D, Gupta R, Haagsma J, Hagan H, Halasa YA, Hall W, Haring D, Haro JM, Harrison JE, Havmoeller R, Hay RJ, Higashi H, Hill C, Hoen B, Hoffman H, Hotez PJ, Hoy D, Huang JJ, Ibeanusi SE, Jacobsen KH, James SL, Jarvis D, Jasrasaria R, Jayaraman S, Johns N, Jonas JB, Karthikeyan G, Kassebaum N, Kawakami N, Keren A, Khoo JP, King CH, Knowlton LM, Kobusingye O, Koranteng A, Krishnamurthi R, Lalloo R, Laslett LL, Lathlean T, Leasher JL, Lee YY, Leigh J, Lim SS, Limb E, Lin JK, Lipnick M, Lipshultz SE, Liu W, Loane M, Ohno SL, Lyons R, Ma J, Mabweijano J, MacIntyre MF, Malekzadeh R, Mallinger L, Manivannan S, Marcenes W, March L, Margolis DJ, Marks GB, Marks R, Matsumori A, Matzopoulos R, Mayosi BM, McAnulty JH, McDermott MM, McGill N, McGrath J, Medina-Mora ME, Meltzer M, Mensah GA, Merriman TR, Meyer AC, Miglioli V, Miller M, Miller TR, Mitchell PB, Mocumbi AO, Moffitt TE, Mokdad AA, Monasta L, Montico M, Moradi-Lakeh M, Moran A, Morawska L, Mori R, Murdoch ME, Mwaniki MK, Naidoo K, Nair MN, Naldi L, Narayan KM, Nelson PK, Nelson RG, Nevitt MC, Newton CR, Nolte S, Norman P, Norman R, O'Donnell M, O'Hanlon S, Olives C, Omer SB, Ortblad K, Osborne R, Ozgediz D, Page A, Pahari B, Pandian JD, Rivero AP, Patten SB, Pearce N, Padilla RP, Perez-Ruiz F, Perico N, Pesudovs K, Phillips D, Phillips MR, Pierce K, Pion S, Polanczyk GV, Polinder S, Pope CA 3rd, Popova S, Porrini E, Pourmalek F, Prince M, Pullan RL, Ramaiah KD, Ranganathan D, Razavi H, Regan M, Rehm JT, Rein DB, Remuzzi G, Richardson K, Rivara FP, Roberts T, Robinson C, De Leon FR, Ronfani L, Room R, Rosenfeld LC, Rushton L, Sacco RL, Saha S, Sampson U, Sanchez-Riera L, Sanman E, Schwebel DC, Scott JG, Segui-Gomez M, Shahraz S, Shepard DS, Shin H, Shivakoti R, Singh D, Singh GM, Singh JA, Singleton J, Sleet DA, Sliwa K, Smith E, Smith JL, Stapelberg NJ, Steer A, Steiner T, Stolk WA, Stovner LJ, Sudfeld C, Syed S, Tamburlini G, Tavakkoli M, Taylor HR, Taylor JA, Taylor WJ, Thomas B, Thomson WM, Thurston GD, Tleyjeh IM, Tonelli M, Towbin JA, Truelsen T, Tsilimbaris MK, Ubeda C, Undurraga EA, van der Werf MJ, van Os J, Vavilala MS, Venketasubramanian N, Wang M, Wang W, Watt K, Weatherall DJ, Weinstock MA, Weintraub R, Weisskopf MG, Weissman MM, White RA, Whiteford H, Wiersma ST, Wilkinson JD, Williams HC, Williams SR, Witt E, Wolfe F, Woolf AD, Wulf S, Yeh PH, Zaidi AK, Zheng ZJ, Zonies D, Lopez AD, Murray CJ, AlMazroa MA, Memish ZA. Years lived with disability (YLDs) for 1160 sequelae of 289 diseases and injuries 1990-2010: a systematic analysis for the Global Burden of Disease Study 2010. Lancet. 2012 Dec 15;380(9859):2163-96. doi: 10.1016/S0140-6736(12)61729-2.
Results publicationIASP. (2003). How Prevalent Is Chronic Pain? International Association for the Study of Pain. Retrieved from https://www.iasp-pain.org/files/Content/ContentFolders/Publications2/PainClinicalUpdates/Archives/PCU03-2_1390265045864_38.pdf
Results publication: PubMed 21978149Goldberg DS, McGee SJ. Pain as a global public health priority. BMC Public Health. 2011 Oct 6;11:770. doi: 10.1186/1471-2458-11-770.
Results publication: PubMed 21390174Cho SK, Heiby EM, McCracken LM, Moon DE, Lee JH. Daily functioning in chronic pain: study of structural relations with posttraumatic stress disorder symptoms, pain intensity, and pain avoidance. Korean J Pain. 2011 Mar;24(1):13-21. doi: 10.3344/kjp.2011.24.1.13. Epub 2011 Feb 25.
Results publication: PubMed 19688608Wahl AK, Rustoen T, Rokne B, Lerdal A, Knudsen O, Miaskowski C, Moum T. The complexity of the relationship between chronic pain and quality of life: a study of the general Norwegian population. Qual Life Res. 2009 Oct;18(8):971-80. doi: 10.1007/s11136-009-9515-x. Epub 2009 Aug 18.
Results publication: PubMed 22607834Gaskin DJ, Richard P. The economic costs of pain in the United States. J Pain. 2012 Aug;13(8):715-24. doi: 10.1016/j.jpain.2012.03.009. Epub 2012 May 16.
Results publication: PubMed 26767993Fitzcharles MA, Baerwald C, Ablin J, Hauser W. Efficacy, tolerability and safety of cannabinoids in chronic pain associated with rheumatic diseases (fibromyalgia syndrome, back pain, osteoarthritis, rheumatoid arthritis): A systematic review of randomized controlled trials. Schmerz. 2016 Feb;30(1):47-61. doi: 10.1007/s00482-015-0084-3.
Results publication: PubMed 14614170Ballantyne JC, Mao J. Opioid therapy for chronic pain. N Engl J Med. 2003 Nov 13;349(20):1943-53. doi: 10.1056/NEJMra025411. No abstract available.
Results publication: PubMed 20091598Noble M, Treadwell JR, Tregear SJ, Coates VH, Wiffen PJ, Akafomo C, Schoelles KM. Long-term opioid management for chronic noncancer pain. Cochrane Database Syst Rev. 2010 Jan 20;2010(1):CD006605. doi: 10.1002/14651858.CD006605.pub2.
Results publicationIASP. (1994). Part III: Pain Terms, A Current List with Definitions and Notes on Usage. In Classification of Chronic Pain (second ed., pp. 209-214): IASP Press. Retrieved from

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Referral and contact

AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.

Ramin Safakish, MD.FRCPC principal investigator

Allevio Pain Management Clinic

1 site in 1 country: see every site and its status.

Questions about this trial

What is this clinical trial studying?

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 4 Dec 2020. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Canada. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Evaluation of effectiveness of lidocaine-ketamine infusions: PQAS-R (time frame: 4 weeks after the first infusion and every 4 weeks up to 36 weeks). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT04123652, which also lists 19 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Dec 2020.