Chronic Postoperative PainSMS DPpostopNCT04313855
Help With Early Detection of Postoperative Neuropathic Pain Using SMS After Ambulatory Surgery
A study testing SMS in the early detection of postoperative neuropathic pain in people with Chronic Postoperative Pain, run by Fondation Hôpital Saint-Joseph at 1 site in France.
Trial summary
Chronic post-operative pain is generally defined by persistent pain more than 2 months after surgery. General reviews on chronic post-operative pain describe an overall incidence of 30%, of which 5 to 10% are described as severe. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Chronic Postoperative Pain
- What is being tested?
- SMS in the early detection of postoperative neuropathic pain
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 306 participants
- Where
- 1 siteFrance
- Study dates
- 9 Dec 2020to 28 Oct 2022
- Phase
- Interventional
- 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 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Patient aged ≥ 18 years
- Patient hospitalized on an outpatient basis within the Paris Saint Joseph Hospital Group in the following different surgical specialties: orthopedics, digestive, vascular, gynecological, plastic and restorative
- French speaking patient
- Patient with smartphone
- Patient affiliated to a social security scheme
- Patient having given oral, free, informed and express consent
Who cannot join
- Patient under guardianship or curatorship
- Patient deprived of liberty
Trial locations and contacts
1 site in 1 country.
About this study
Chronic post-operative pain is generally defined by persistent pain more than 2 months after surgery. General reviews on chronic post-operative pain describe an overall incidence of 30%, of which 5 to 10% are described as severe. Different risk factors have been identified: pain and preoperative opioid use, anxiety - depression, catastrophism, type of surgery, intensity and duration of postoperative pain, genetic factors.
If postoperative pain is essentially pain caused by excess nociceptive stimulation, investigators realize that a neuropathic component is far from being exceptional and that this can be demonstrated quickly after surgery. In addition, these neuropathic pains respond little or no to the usual analgesics and in particular to opioids, which can be the cause of misuse or death from overdose. Early detection of pain of a neuropathic nature would allow appropriate therapy to be put in place and may therefore reduce the risk of chronic postoperative pain.
Read more
The concept of ambulatory surgery assumes that postoperative pain will be minimal and can be controlled at home by the administration of oral pain relievers. However, following the development of surgical techniques and the improvement in the quality of care, the number and complexity of procedures that can be performed in ambulatory surgery have increased considerably. Consequently, a significant number of patients will probably develop chronic post-operative pain without the possibility of early detection. The prevalence of chronic post-operative pain in ambulatory surgery has been studied by a single team. The authors conclude that it is underestimated and variable depending on the surgery between 15 and 32%.
For the past few years, the GHPSJ has been using an ambulatory surgery algorithm that sends SMS messages to warn and follow up on patients. The principle is simple: patients scheduled for outpatient surgery receive text messages the day before their intervention to remind them of the instructions to be followed and the meeting times and, the day after the operation, the algorithm sends SMS to ask patients if all is well or if they have pain, nausea or vomiting, discharge from the scar. In postoperative monitoring, this technology has shown promising results.
This technology has not been used in the screening of persistent pain. The objective of this work is to assess the effectiveness of an SMS algorithm in the early detection of postoperative neuropathic pain after surgery performed on an outpatient basis.
- Conditions
- Chronic Postoperative Pain
- Being tested
- SMS in the early detection of postoperative neuropathic pain
- Medical subject headings
- Pain, Postoperative
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
SMS in the early detection of postoperative neuropathic painDiagnostic test
7 days after the intervention, the patient receives a standardized questionnaire by SMS, to determine whether the patient has pain at the operating site and whether this pain has the characteristics of neuropathic pain. After replying to the SMS, the patient will be contacted by phone to assess: the intensity of pain at the operating site using a numerical scale and the existence of neuropathic pain. Depending on the responses received by SMS and/or phone, a consultation appointment with an anesthesiologist specializing in pain may be offered within a maximum of 2 weeks.
Ninety days after your surgery, the patient receives the same standardized questionnaire by SMS. The patient will be contacted by telephone, in order to assess the intensity of pain at the operating site and the existence of neuropathic pain using. If the patient has post-operative pain, a consultation appointment with an anesthesiologist specializing in pain will be offered to him within a maximum of 2 weeks.
| Study group | Role | What they receive |
|---|---|---|
| Chronic post-operative pain | Experimental | 7 days after the intervention, the patient receives a standardized questionnaire by SMS, to determine whether the patient has pain at the operating site and whether this pain has the characteristics of neuropathic pain. After replying to the SMS, the patient will be contacted by phone to assess: the intensity of pain at the operating site using a numerical scale and the existence of neuropathic pain. Depending on the responses received by SMS and/or phone, a consultation appointment with an anesthesiologist specializing in pain may be offered within a maximum of 2 weeks.
Ninety days after your surgery, the patient receives the same standardized questionnaire by SMS. The patient will be contacted by telephone, in order to assess the intensity of pain at the operating site and the existence of neuropathic pain using. If the patient has post-operative pain, a consultation appointment with an anesthesiologist specializing in pain will be offered to him within a maximum of 2 weeks. Receives: Diagnostic Test: SMS in the early detection of postoperative neuropathic pain |
What is being measured
The primary outcome is the main question the study is designed to answer.
diagnostic method
This outcome corresponds to the calculation of the sensitivity and the specificity of the diagnostic method tested which is the combination of SMS and the DN2 questionnaire.
Measured: Day 7
Secondary outcomes (5)
Persistent post-surgical pain day 90
This oucome correspond to corresponds to the proportion of patients with persistent post-surgical pain at seven days after surgery performed on an outpatient basis.
Measured: Day 90
Neuropathic pain day90
This outcome correspond to the proportion of neuropathic pain on Day90 estimated using the questionnaires DN4 and NPSI during the postoperative pain consultation.
Measured: Day 90
signs suggestive of neuropathic pain day90
This outcome correspond to the proportion of patients with signs suggestive of neuropathic pain during the consultation carried out by an anesthesiologist specialized in pain 90 days after the intervention.
Measured: Day 90
Comparison of pain between day7 and day90
This outcome corresponds to the comparison of the proportion of patients with signs suggestive of neuropathic pain during the consultation carried out by an anesthesiologist specialized in pain between Day7 and Day90 after the intervention.
Measured: Day90
Proportion of patients presenting signs suggestive of pain
This ouctome corresponds to the proportion of patients presenting signs suggestive of neuropathic pain during the consultation carried out by an anesthesiologist specialized in pain on Day90 who had presented pain on Day7.
Measured: Day90
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted18 Mar 2020
- Study start9 Dec 2020
- Primary completion7 Jul 2022
- Study completion28 Oct 2022
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (14)Papers the sponsor has linked to this study.
- Other trials for Chronic Postoperative PainStudies 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 N/A
- Primary purpose
- Diagnosis
- Allocation
- Not applicable
- Intervention model
- Single group
- Model description
- This is a prospective case-control diagnostic study nestled in a cohort. The cohort is the set of patients operated on ambulatory surgery on the GHPSJ. In this cohort, pain patients according to the doctor's opinion are the cases. The controls are the patients who are not painful according to the doctor's opinion. For reasons of available consultation time slots, it is not possible to see all of the patients. It was therefore decided to see all the painful patients and to select by lot the painless patients.
- Masking
- None (open label)
- Enrolment
- 306 participants (actual)
Sponsor and investigators
- Lead sponsor
- Fondation Hôpital Saint-Joseph
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Frederic ADAM, MD, Principal investigator, Fondation Hôpital Saint-Joseph
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04313855
- Sponsor's protocol ID
- SMS DPpostop
- Acronym
- SMS DPpostop
- Status last verified
- Oct 2022
- First submitted
- 16 Mar 2020
- Last updated
- 1 Nov 2022
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Publications
Macrae WA. Chronic post-surgical pain: 10 years on. Br J Anaesth. 2008 Jul;101(1):77-86. doi: 10.1093/bja/aen099. Epub 2008 Apr 22.
PubMed 18434337Johansen A, Romundstad L, Nielsen CS, Schirmer H, Stubhaug A. Persistent postsurgical pain in a general population: prevalence and predictors in the Tromso study. Pain. 2012 Jul;153(7):1390-1396. doi: 10.1016/j.pain.2012.02.018. Epub 2012 Mar 24.
PubMed 22445291Fletcher D, Stamer UM, Pogatzki-Zahn E, Zaslansky R, Tanase NV, Perruchoud C, Kranke P, Komann M, Lehman T, Meissner W; euCPSP group for the Clinical Trial Network group of the European Society of Anaesthesiology. Chronic postsurgical pain in Europe: An observational study. Eur J Anaesthesiol. 2015 Oct;32(10):725-34. doi: 10.1097/EJA.0000000000000319.
PubMed 26241763Glare P, Aubrey KR, Myles PS. Transition from acute to chronic pain after surgery. Lancet. 2019 Apr 13;393(10180):1537-1546. doi: 10.1016/S0140-6736(19)30352-6.
PubMed 30983589Beloeil H, Sion B, Rousseau C, Albaladejo P, Raux M, Aubrun F, Martinez V; SFAR research network. Early postoperative neuropathic pain assessed by the DN4 score predicts an increased risk of persistent postsurgical neuropathic pain. Eur J Anaesthesiol. 2017 Oct;34(10):652-657. doi: 10.1097/EJA.0000000000000634.
PubMed 28437260Hoofwijk DM, Fiddelers AA, Peters ML, Stessel B, Kessels AG, Joosten EA, Gramke HF, Marcus MA. Prevalence and Predictive Factors of Chronic Postsurgical Pain and Poor Global Recovery 1 Year After Outpatient Surgery. Clin J Pain. 2015 Dec;31(12):1017-25. doi: 10.1097/AJP.0000000000000207.
PubMed 25565589Hoofwijk DMN, Fiddelers AAA, Emans PJ, Joosten EA, Gramke HF, Marcus MAE, Buhre WFFA. Prevalence and Predictive Factors of Chronic Postsurgical Pain and Global Surgical Recovery 1 Year After Outpatient Knee Arthroscopy: A Prospective Cohort Study. Medicine (Baltimore). 2015 Nov;94(45):e2017. doi: 10.1097/MD.0000000000002017.
PubMed 26559300Lu K, Marino NE, Russell D, Singareddy A, Zhang D, Hardi A, Kaar S, Puri V. Use of Short Message Service and Smartphone Applications in the Management of Surgical Patients: A Systematic Review. Telemed J E Health. 2018 Jun;24(6):406-414. doi: 10.1089/tmj.2017.0123. Epub 2017 Nov 7.
PubMed 29111887Carrier G, Cotte E, Beyer-Berjot L, Faucheron JL, Joris J, Slim K; Groupe Francophone de Rehabilitation Amelioree apres Chirurgie (GRACE). Post-discharge follow-up using text messaging within an enhanced recovery program after colorectal surgery. J Visc Surg. 2016 Aug;153(4):249-52. doi: 10.1016/j.jviscsurg.2016.05.016. Epub 2016 Aug 8.
PubMed 27423211Chen Y, Chin M, Greenberg S, Johnstone C, McGuinness J. Post-tonsillectomy pain in 24 children - utilising short message service (SMS) to assess postoperative outcomes. Clin Otolaryngol. 2012 Oct;37(5):412-4. doi: 10.1111/j.1749-4486.2012.02521.x. No abstract available.
PubMed 23164270Bouhassira D, Attal N, Alchaar H, Boureau F, Brochet B, Bruxelle J, Cunin G, Fermanian J, Ginies P, Grun-Overdyking A, Jafari-Schluep H, Lanteri-Minet M, Laurent B, Mick G, Serrie A, Valade D, Vicaut E. Comparison of pain syndromes associated with nervous or somatic lesions and development of a new neuropathic pain diagnostic questionnaire (DN4). Pain. 2005 Mar;114(1-2):29-36. doi: 10.1016/j.pain.2004.12.010. Epub 2005 Jan 26.
PubMed 15733628Wall PD, Sprowson AP, Parsons N, Parsons H, Achten J, Balasubramanian S, Costa ML; Perioperative Analgesia for Knee Arthroplasty Collaborators. Protocol for a single-centre randomised controlled trial of multimodal periarticular anaesthetic infiltration versus single-agent femoral nerve blockade as analgesia for total knee arthroplasty: Perioperative Analgesia for Knee Arthroplasty (PAKA). BMJ Open. 2015 Dec 21;5(12):e009898. doi: 10.1136/bmjopen-2015-009898.
PubMed 26692559Remerand F, Godfroid HB, Brilhault J, Vourc'h R, Druon J, Laffon M, Fusciardi J. Chronic pain 1 year after foot surgery: Epidemiology and associated factors. Orthop Traumatol Surg Res. 2014 Nov;100(7):767-73. doi: 10.1016/j.otsr.2014.07.012. Epub 2014 Oct 8.
PubMed 25306303van Zaane B, Vergouwe Y, Donders AR, Moons KG. Comparison of approaches to estimate confidence intervals of post-test probabilities of diagnostic test results in a nested case-control study. BMC Med Res Methodol. 2012 Oct 31;12:166. doi: 10.1186/1471-2288-12-166.
PubMed 23114025
Study at a glance
From the registry record, last updated by the sponsor on 1 Nov 2022. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Help With Early Detection of Postoperative Neuropathic Pain Using SMS After Ambulatory Surgery
- ClinicalTrials.gov ID
- NCT04313855
- Acronym / sponsor ID
- SMS DPpostop / SMS DPpostop
- Conditions
- Chronic Postoperative Pain
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 306 participants (actual)
- Lead sponsor
- Fondation Hôpital Saint-JosephUniversity, hospital or other
- Study start
- 9 Dec 2020 (actual)
- Primary completion
- 7 Jul 2022 (actual)
- Study completion
- 28 Oct 2022 (actual)
- First posted
- 18 Mar 2020 (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.
Chronic post-operative pain is generally defined by persistent pain more than 2 months after surgery. General reviews on chronic post-operative pain describe an overall incidence of 30%, of which 5 to 10% are described as severe. Different risk factors have been identified: pain and preoperative opioid use, anxiety - depression, catastrophism, type of surgery, intensity and duration of postoperative pain, genetic factors.
If postoperative pain is essentially pain caused by excess nociceptive stimulation, investigators realize that a neuropathic component is far from being exceptional and that this can be demonstrated quickly after surgery. In addition, these neuropathic pains respond little or no to the usual analgesics and in particular to opioids, which can be the cause of misuse or death from overdose. Early detection of pain of a neuropathic nature would allow appropriate therapy to be put in place and may therefore reduce the risk of chronic postoperative pain.
The concept of ambulatory surgery assumes that postoperative pain will be minimal and can be controlled at home by the administration of oral pain relievers. However, following the development of surgical techniques and the improvement in the quality of care, the number and complexity of procedures that can be performed in ambulatory surgery have increased considerably. Consequently, a significant number of patients will probably develop chronic post-operative pain without the possibility of early detection. The prevalence of chronic post-operative pain in ambulatory surgery has been studied by a single team. The authors conclude that it is underestimated and variable depending on the surgery between 15 and 32%.
For the past few years, the GHPSJ has been using an ambulatory surgery algorithm that sends SMS messages to warn and follow up on patients. The principle is simple: patients scheduled for outpatient surgery receive text messages the day before their intervention to remind them of the instructions to be followed and the meeting times and, the day after the operation, the algorithm sends SMS to ask patients if all is well or if they have pain, nausea or vomiting, discharge from the scar. In postoperative monitoring, this technology has shown promising results.
This technology has not been used in the screening of persistent pain. The objective of this work is to assess the effectiveness of an SMS algorithm in the early detection of postoperative neuropathic pain after surgery performed on an outpatient basis.
Study design
- Primary purpose
- Diagnosis
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
- Model description
- This is a prospective case-control diagnostic study nestled in a cohort. The cohort is the set of patients operated on ambulatory surgery on the GHPSJ. In this cohort, pain patients according to the doctor's opinion are the cases. The controls are the patients who are not painful according to the doctor's opinion. For reasons of available consultation time slots, it is not possible to see all of the patients. It was therefore decided to see all the painful patients and to select by lot the painless patients.
| Arm | Type | Receives |
|---|---|---|
| Chronic post-operative pain | Experimental | Diagnostic Test: SMS in the early detection of postoperative neuropathic pain7 days after the intervention, the patient receives a standardized questionnaire by SMS, to determine whether the patient has pain at the operating site and whether this pain has the characteristics of neuropathic pain. After replying to the SMS, the patient will be contacted by phone to assess: the intensity of pain at the operating site using a numerical scale and the existence of neuropathic pain. Depending on the responses received by SMS and/or phone, a consultation appointment with an anesthesiologist specializing in pain may be offered within a maximum of 2 weeks. Ninety days after your surgery, the patient receives the same standardized questionnaire by SMS. The patient will be contacted by telephone, in order to assess the intensity of pain at the operating site and the existence of neuropathic pain using. If the patient has post-operative pain, a consultation appointment with an anesthesiologist specializing in pain will be offered to him within a maximum of 2 weeks. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (6 listed)
- Patient aged ≥ 18 years
- Patient hospitalized on an outpatient basis within the Paris Saint Joseph Hospital Group in the following different surgical specialties: orthopedics, digestive, vascular, gynecological, plastic and restorative
- French speaking patient
- Patient with smartphone
- Patient affiliated to a social security scheme
Key exclusion criteria (2 listed)
- Patient under guardianship or curatorship
- Patient deprived of liberty
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 |
|---|---|---|
| SMS in the early detection of postoperative neuropathic pain7 days after the intervention, the patient receives a standardized questionnaire by SMS, to determine whether the patient has pain at the operating site and whether this pain has the characteristics of neuropathic pain. After replying to the SMS, the patient will be contacted by phone to assess: the intensity of pain at the operating site using a numerical scale and the existence of neuropathic pain. Depending on the responses received by SMS and/or phone, a consultation appointment with an anesthesiologist specializing in pain may be offered within a maximum of 2 weeks. Ninety days after your surgery, the patient receives the same standardized questionnaire by SMS. The patient will be contacted by telephone, in order to assess the intensity of pain at the operating site and the existence of neuropathic pain using. If the patient has post-operative pain, a consultation appointment with an anesthesiologist specializing in pain will be offered to him within a maximum of 2 weeks. | Diagnostic test | Chronic post-operative pain |
Primary outcome
diagnostic method
Time frame: Day 7
This outcome corresponds to the calculation of the sensitivity and the specificity of the diagnostic method tested which is the combination of SMS and the DN2 questionnaire.
5 secondary outcomes
Persistent post-surgical pain day 90
Time frame: Day 90
Neuropathic pain day90
Time frame: Day 90
signs suggestive of neuropathic pain day90
Time frame: Day 90
Comparison of pain between day7 and day90
Time frame: Day90
Proportion of patients presenting signs suggestive of pain
Time frame: Day90
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 1 Nov 2022.
- Results publication: PubMed 18434337Macrae WA. Chronic post-surgical pain: 10 years on. Br J Anaesth. 2008 Jul;101(1):77-86. doi: 10.1093/bja/aen099. Epub 2008 Apr 22.
- Results publication: PubMed 22445291Johansen A, Romundstad L, Nielsen CS, Schirmer H, Stubhaug A. Persistent postsurgical pain in a general population: prevalence and predictors in the Tromso study. Pain. 2012 Jul;153(7):1390-1396. doi: 10.1016/j.pain.2012.02.018. Epub 2012 Mar 24.
- Results publication: PubMed 26241763Fletcher D, Stamer UM, Pogatzki-Zahn E, Zaslansky R, Tanase NV, Perruchoud C, Kranke P, Komann M, Lehman T, Meissner W; euCPSP group for the Clinical Trial Network group of the European Society of Anaesthesiology. Chronic postsurgical pain in Europe: An observational study. Eur J Anaesthesiol. 2015 Oct;32(10):725-34. doi: 10.1097/EJA.0000000000000319.
- Results publication: PubMed 30983589Glare P, Aubrey KR, Myles PS. Transition from acute to chronic pain after surgery. Lancet. 2019 Apr 13;393(10180):1537-1546. doi: 10.1016/S0140-6736(19)30352-6.
- Results publication: PubMed 28437260Beloeil H, Sion B, Rousseau C, Albaladejo P, Raux M, Aubrun F, Martinez V; SFAR research network. Early postoperative neuropathic pain assessed by the DN4 score predicts an increased risk of persistent postsurgical neuropathic pain. Eur J Anaesthesiol. 2017 Oct;34(10):652-657. doi: 10.1097/EJA.0000000000000634.
- Results publication: PubMed 25565589Hoofwijk DM, Fiddelers AA, Peters ML, Stessel B, Kessels AG, Joosten EA, Gramke HF, Marcus MA. Prevalence and Predictive Factors of Chronic Postsurgical Pain and Poor Global Recovery 1 Year After Outpatient Surgery. Clin J Pain. 2015 Dec;31(12):1017-25. doi: 10.1097/AJP.0000000000000207.
- Results publication: PubMed 26559300Hoofwijk DMN, Fiddelers AAA, Emans PJ, Joosten EA, Gramke HF, Marcus MAE, Buhre WFFA. Prevalence and Predictive Factors of Chronic Postsurgical Pain and Global Surgical Recovery 1 Year After Outpatient Knee Arthroscopy: A Prospective Cohort Study. Medicine (Baltimore). 2015 Nov;94(45):e2017. doi: 10.1097/MD.0000000000002017.
- Results publication: PubMed 29111887Lu K, Marino NE, Russell D, Singareddy A, Zhang D, Hardi A, Kaar S, Puri V. Use of Short Message Service and Smartphone Applications in the Management of Surgical Patients: A Systematic Review. Telemed J E Health. 2018 Jun;24(6):406-414. doi: 10.1089/tmj.2017.0123. Epub 2017 Nov 7.
- Results publication: PubMed 27423211Carrier G, Cotte E, Beyer-Berjot L, Faucheron JL, Joris J, Slim K; Groupe Francophone de Rehabilitation Amelioree apres Chirurgie (GRACE). Post-discharge follow-up using text messaging within an enhanced recovery program after colorectal surgery. J Visc Surg. 2016 Aug;153(4):249-52. doi: 10.1016/j.jviscsurg.2016.05.016. Epub 2016 Aug 8.
- Results publication: PubMed 23164270Chen Y, Chin M, Greenberg S, Johnstone C, McGuinness J. Post-tonsillectomy pain in 24 children - utilising short message service (SMS) to assess postoperative outcomes. Clin Otolaryngol. 2012 Oct;37(5):412-4. doi: 10.1111/j.1749-4486.2012.02521.x. No abstract available.
- Results publication: PubMed 15733628Bouhassira D, Attal N, Alchaar H, Boureau F, Brochet B, Bruxelle J, Cunin G, Fermanian J, Ginies P, Grun-Overdyking A, Jafari-Schluep H, Lanteri-Minet M, Laurent B, Mick G, Serrie A, Valade D, Vicaut E. Comparison of pain syndromes associated with nervous or somatic lesions and development of a new neuropathic pain diagnostic questionnaire (DN4). Pain. 2005 Mar;114(1-2):29-36. doi: 10.1016/j.pain.2004.12.010. Epub 2005 Jan 26.
- Results publication: PubMed 26692559Wall PD, Sprowson AP, Parsons N, Parsons H, Achten J, Balasubramanian S, Costa ML; Perioperative Analgesia for Knee Arthroplasty Collaborators. Protocol for a single-centre randomised controlled trial of multimodal periarticular anaesthetic infiltration versus single-agent femoral nerve blockade as analgesia for total knee arthroplasty: Perioperative Analgesia for Knee Arthroplasty (PAKA). BMJ Open. 2015 Dec 21;5(12):e009898. doi: 10.1136/bmjopen-2015-009898.
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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.
Frederic ADAM, MD principal investigator
Fondation Hôpital Saint-Joseph
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing SMS in the early detection of postoperative neuropathic pain in people with Chronic Postoperative Pain, run by Fondation Hôpital Saint-Joseph at 1 site in France.
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 6 inclusion and 2 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 1 Nov 2022. 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 France. 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.
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?
diagnostic method (time frame: Day 7). 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 NCT04313855, which also lists 14 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 1 Nov 2022.