Neuropathic Pain EvaluationDN4-SFARNCT02826317
Neuropathic Evaluation of Postoperative Pain
An observational study of Neuropathic Pain Evaluation, run by Rennes University Hospital at 1 site in France.
Trial summary
Chronic postsurgical pain (CPSP) is defined by pain persisting longer than 2 months after surgery (1). Its incidence varies from 10 to 50 % in the literature (2). A high proportion of CPSP is neuropathic (CPSNP) (4). Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Neuropathic Pain Evaluation
- What is being tested?
- preoperative and postoperative setting
- Type of treatment
- Surgery or procedure
- How many people
- 800 participants
- Where
- 1 siteFrance
- Study dates
- Jan 2015to Jun 2016
- Phase
- Observational
- 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
Study population: All adult patients undergoing inpatient scheduled or urgent surgery are eligible
Who may be able to join
- All adult patients undergoing inpatient scheduled or urgent surgery
Who cannot join
- < 18 years old
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Evaluation du caractère Neuropathique Des Douleurs Post opératoires. Enquête 2 Jours : DN4-SFAR
Chronic postsurgical pain (CPSP) is defined by pain persisting longer than 2 months after surgery (1). Its incidence varies from 10 to 50 % in the literature (2). A high proportion of CPSP is neuropathic (CPSNP) (4). Postoperative pain is traditionally classified as nociceptive pain and the more intense is this pain on a numeric pain scale (NPS), higher are the risks of pain chronicization and the duration of the severe pain is longer (5,6). However, acute neuropathic pain (ANP) can be present in the postoperative setting. However, data on the prevalence of ANP immediately after surgery are scarce and no screening tool has been validated so far in this setting. Therefore, the first objective of this multicenter observational study is to prospectively describe the incidence of APSNP in a large population using the DN4 questionnaire. The second objective of our study is to confirm the hypothetic link between APSNP and CPSNP at 1 and 2 months after surgery in a large population. It is hypothesized that the systematic use of the DN4 questionnaire in postoperative could help detect patients at risk of CPSNP.
Read the detailed description
Chronic postsurgical pain (CPSP) is defined by pain persisting longer than 2 months after surgery (1). Its incidence varies from 10 to 50 % in the literature (2). A high proportion of CPSP is neuropathic (CPSNP) (4). Postoperative pain is traditionally classified as nociceptive pain and the more intense is this pain on a numeric pain scale (NPS), higher are the risks of pain chronicization and the duration of the severe pain is longer (5,6). However, acute neuropathic pain (ANP) can be present in the postoperative setting. However, data on the prevalence of ANP immediately after surgery are scarce and no screening tool has been validated so far in this setting. Therefore, the first objective of this multicenter observational study is to prospectively describe the incidence of APSNP in a large population using the DN4 questionnaire. The second objective of our study is to confirm the hypothetic link between APSNP and CPSNP at 1 and 2 months after surgery in a large population. It is hypothesized that the systematic use of the DN4 questionnaire in postoperative could help detect patients at risk of CPSNP.
Methods:
Investigators and centers will be recruited through the SFAR (French Society of Anesthesiology and Intensive Care) research network. The study will take place during the same 2 consecutive days in all the centers in France. Each center agreed to include as many patients as they could during this period. All adult patients undergoing inpatient scheduled or urgent surgery are eligible. The study is solely observational and does not interfere with the patient's care. Preoperative assessment will consist on collecting demographic data (age, sex, body mass index, type of surgery) as well as the presence preoperative chronic pain and its localization, preoperative opioid, gabapentin or pregabalin consumption. In postoperative, we will collect the following data: type of anesthesia, intra operative ketamine administration, type and total dose of opioid administered during surgery. Pain will be evaluated at least 2 hours after the surgery within the same day (D0) and then at day 2 (D2), 1 (M1) and 2 months (M2) after the surgery. Pain will be assessed using a 10-point NPS. If NPS >0, neuropathic pain will be diagnosed on the basis of DN4 questionnaire. NCPSP is defined by NPS >0 and positive DN4 (DN4 ≥ 4 /10) (11). APSNP and CPSNP are defined by D0/D2 DN4≥ 4/10 and M1/M2 DN4≥ 4/10, respectively. The preoperative and immediate postoperative (day 0 and day 2) data will be collected by one investigator in each center. The latter data (1 and 2 months after the surgery) will be assessed over the phone by research nurses.
- Conditions
- Neuropathic Pain Evaluation
- Being tested
- preoperative and postoperative setting
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
preoperative and postoperative settingProcedure or surgery
Preoperative assessment will consist on collecting demographic data as well as the presence preoperative chronic pain and its localization, preoperative opioid, gabapentin or pregabalin consumption. In postoperative, we will collect the following data: type of anesthesia, intra operative ketamine administration, type and total dose of opioid administered during surgery. Pain will be evaluated at least 2 hours after the surgery within the same day (D0) and then at day 2 (D2), 1 (M1) and 2 months (M2) after the surgery. Pain will be assessed using a 10-point NPS. If NPS >0, neuropathic pain will be diagnosed on the basis of DN4 questionnaire. NCPSP is defined by NPS >0 and positive DN4 (DN4 ≥ 4 /10) (11). APSNP and CPSNP are defined by D0/D2 DN4≥ 4/10 and M1/M2 DN4≥ 4/10, respectively.
What is being measured
The primary outcome is the main question the study is designed to answer.
prospectively describe the incidence of APSNP in a large population using the DN4 questionnaire
Measured: 2 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted7 Jul 2016 (estimated)
- Study startJan 2015
- Primary completionDec 2015
- Study completionJun 2016
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Neuropathic Pain EvaluationStudies of the same condition, open and under way.
- More trials run by Rennes University HospitalThe sponsor's other registered studies.
- 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
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 800 participants (actual)
Sponsor and investigators
- Lead sponsor
- Rennes University Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Hélène BELOEIL, Principal investigator, Rennes University Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02826317
- Sponsor's protocol ID
- 14.02
- Acronym
- DN4-SFAR
- Status last verified
- Jul 2016
- First submitted
- 5 Jul 2016
- Last updated
- 11 Jul 2016
- Results posted
- No
- Data monitoring committee
- No
- Individual data sharing
- No
Publications
Beloeil 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 28437260
Study at a glance
From the registry record, last updated by the sponsor on 11 Jul 2016. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Evaluation du caractère Neuropathique Des Douleurs Post opératoires. Enquête 2 Jours : DN4-SFAR
- ClinicalTrials.gov ID
- NCT02826317
- Acronym / sponsor ID
- DN4-SFAR / 14.02
- Conditions
- Neuropathic Pain Evaluation
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 800 participants (actual)
- Lead sponsor
- Rennes University HospitalUniversity, hospital or other
- Study start
- Jan 2015
- Primary completion
- Dec 2015 (actual)
- Study completion
- Jun 2016 (actual)
- First posted
- 7 Jul 2016 (estimated)
- 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 postsurgical pain (CPSP) is defined by pain persisting longer than 2 months after surgery (1). Its incidence varies from 10 to 50 % in the literature (2). A high proportion of CPSP is neuropathic (CPSNP) (4). Postoperative pain is traditionally classified as nociceptive pain and the more intense is this pain on a numeric pain scale (NPS), higher are the risks of pain chronicization and the duration of the severe pain is longer (5,6). However, acute neuropathic pain (ANP) can be present in the postoperative setting. However, data on the prevalence of ANP immediately after surgery are scarce and no screening tool has been validated so far in this setting. Therefore, the first objective of this multicenter observational study is to prospectively describe the incidence of APSNP in a large population using the DN4 questionnaire. The second objective of our study is to confirm the hypothetic link between APSNP and CPSNP at 1 and 2 months after surgery in a large population. It is hypothesized that the systematic use of the DN4 questionnaire in postoperative could help detect patients at risk of CPSNP.
Detailed description
Chronic postsurgical pain (CPSP) is defined by pain persisting longer than 2 months after surgery (1). Its incidence varies from 10 to 50 % in the literature (2). A high proportion of CPSP is neuropathic (CPSNP) (4). Postoperative pain is traditionally classified as nociceptive pain and the more intense is this pain on a numeric pain scale (NPS), higher are the risks of pain chronicization and the duration of the severe pain is longer (5,6). However, acute neuropathic pain (ANP) can be present in the postoperative setting. However, data on the prevalence of ANP immediately after surgery are scarce and no screening tool has been validated so far in this setting. Therefore, the first objective of this multicenter observational study is to prospectively describe the incidence of APSNP in a large population using the DN4 questionnaire. The second objective of our study is to confirm the hypothetic link between APSNP and CPSNP at 1 and 2 months after surgery in a large population. It is hypothesized that the systematic use of the DN4 questionnaire in postoperative could help detect patients at risk of CPSNP.
Methods:
Investigators and centers will be recruited through the SFAR (French Society of Anesthesiology and Intensive Care) research network. The study will take place during the same 2 consecutive days in all the centers in France. Each center agreed to include as many patients as they could during this period. All adult patients undergoing inpatient scheduled or urgent surgery are eligible. The study is solely observational and does not interfere with the patient's care. Preoperative assessment will consist on collecting demographic data (age, sex, body mass index, type of surgery) as well as the presence preoperative chronic pain and its localization, preoperative opioid, gabapentin or pregabalin consumption. In postoperative, we will collect the following data: type of anesthesia, intra operative ketamine administration, type and total dose of opioid administered during surgery. Pain will be evaluated at least 2 hours after the surgery within the same day (D0) and then at day 2 (D2), 1 (M1) and 2 months (M2) after the surgery. Pain will be assessed using a 10-point NPS. If NPS >0, neuropathic pain will be diagnosed on the basis of DN4 questionnaire. NCPSP is defined by NPS >0 and positive DN4 (DN4 ≥ 4 /10) (11). APSNP and CPSNP are defined by D0/D2 DN4≥ 4/10 and M1/M2 DN4≥ 4/10, respectively. The preoperative and immediate postoperative (day 0 and day 2) data will be collected by one investigator in each center. The latter data (1 and 2 months after the surgery) will be assessed over the phone by research nurses.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- All adult patients undergoing inpatient scheduled or urgent surgery are eligible
Key inclusion criteria (1 listed)
- All adult patients undergoing inpatient scheduled or urgent surgery
Key exclusion criteria (1 listed)
- < 18 years old
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 |
|---|---|---|
| preoperative and postoperative settingPreoperative assessment will consist on collecting demographic data as well as the presence preoperative chronic pain and its localization, preoperative opioid, gabapentin or pregabalin consumption. In postoperative, we will collect the following data: type of anesthesia, intra operative ketamine administration, type and total dose of opioid administered during surgery. Pain will be evaluated at least 2 hours after the surgery within the same day (D0) and then at day 2 (D2), 1 (M1) and 2 months (M2) after the surgery. Pain will be assessed using a 10-point NPS. If NPS >0, neuropathic pain will be diagnosed on the basis of DN4 questionnaire. NCPSP is defined by NPS >0 and positive DN4 (DN4 ≥ 4 /10) (11). APSNP and CPSNP are defined by D0/D2 DN4≥ 4/10 and M1/M2 DN4≥ 4/10, respectively. | Procedure or surgery | – |
Primary outcome
prospectively describe the incidence of APSNP in a large population using the DN4 questionnaire
Time frame: 2 months
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 11 Jul 2016.
- Derived from this study: 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.
- Individual participant dataSharing planned: No
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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.
Hélène BELOEIL principal investigator
Rennes University Hospital
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Neuropathic Pain Evaluation, run by Rennes University Hospital 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 1 inclusion and 1 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 11 Jul 2016. 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?
prospectively describe the incidence of APSNP in a large population using the DN4 questionnaire (time frame: 2 months). 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 NCT02826317, which also lists 1 linked publication.
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 11 Jul 2016.