Chronic Postoperative PainNCT04280432
Monocentric Observational Study: Postoperative Pain After Cesarean Section: Incidence and Risk Factors.
An observational study of Chronic Postoperative Pain and Cesarean Section Complications, run by Instituto de Investigación Hospital Universitario La Paz at 1 site in Spain.
Trial summary
The purpose of this prospective study was to assess chronic pain 3, and 12 months after cesarean delivery in a cohort of women in University hospital La Paz. We also aim to study the possible contribution of anesthetic and surgical risk factors for the development of Chronic post-surgical pain after cesarean (PCSCP) Read more about this study
- Who is it for?
- Ages 18 to 50 years, women onlyHealthy volunteers can take part
- Conditions the study is for
- Chronic Postoperative Pain, Cesarean Section Complications
- What is being tested?
- CESAREAN
- Type of treatment
- Surgery or procedure
- How many people
- 610 participants
- Where
- 1 siteSpain
- Study dates
- 1 Mar 2017to 30 Sep 2018
- 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 to 50 years
- Women only
- Healthy volunteers accepted
- Adult
Study population: Women hospitalized for cesarean section from March 2017 to September 2018 were recruited on the hospital on the day of surgery. Patients who agreed to participate and meet the inclusion criteria
Who may be able to join
- Anesthesiologists scale (ASA) had to be I, II or III
Who cannot join
- history of major psychiatric disorder and inability to undertake a personal or telephone interview, ASA> III or dead fetus as result of caesarean section
Trial locations and contacts
1 site in 1 country.
About this study
The purpose of this prospective study was to assess chronic pain 3, and 12 months after cesarean delivery in a cohort of women in University hospital La Paz. We also aim to study the possible contribution of anesthetic and surgical risk factors for the development of Chronic post-surgical pain after cesarean (PCSCP)
Read the detailed description
- This prospective observational cohort study was conducted at University hospital La Paz. Women hospitalized for cesarean section from March 2017 to September 2018 were recruited on the hospital on the day of surgery, when research interviewers were available. Patients who agreed to participate were interviewed in person preoperatively,at discharge from Reanimation and 24 h postoperatively. Telephone follow-up interviews were conducted one week and 3,and 12 months following surgery. Intraoperative information was collected from the patient record or directly filled by a research person. Questionnaires applied in the present study are reflected in file 1.
- Study participants had to be aged between 18 and 50 years and American Society of Anesthesiologists scale (ASA) had to be I, II or III The exclusion criteria were history of major psychiatric disorder and inability to undertake a personal or telephone interview, ASA> III or dead fetus as result of caesarean section. The study was approved by the local ethics committee (registration number: PI-2564), and written informed consent was obtained from all patients.
Questions about age, race, gestational age, toxic habits, body mass index (BMI) (that was calculated from height and weight) previous vaginal delivery, cesarean delivery, other demographic, medical, surgical, and pre- operative pain variables were included.
-Were also recruited information about urgency level of caesarean using the classification proposed by Lucas et al.use of preoperative oxytocin, anesthesic technique before caesarean section (for example epidural for labor) and surgical and anesthesia variables.
Patients were visited within 24 h after surgery. Pain intensity was assessed as average pain at rest and on movement during the past 24 h using (NRS) and DN2 questionnaire. Also analgesic consumption and relevant side effects or complications were annotated.
Assessment after 3, and 12 months
-Patients were contacted by telephone by one of the authors at 3, and 12 months following cesarean section. This telephone interview usually takes no longer than 15 min. Chronic postsurgical pain (CPSP) was measured using the short form Brief Pain Inventory (BPI) BPI assesses the severity of pain and its impact on functioning. The pain severity items are presented as numeric rating scale (NRS). The patients were asked to rate their pain at rest and during movement in the previous week of the survey. Items of pain interference on function (general activity, mood, walking, work, relations with others, sleep and enjoyment of life ) are also presented as numeric rating scale (NRS) , are valued with 0 = does not interfere and 10 = interferes completely. There were also questions consumption of analgesics and neuropathic pains symptoms using Neuropathic pain (DN2) questionnaire.
- Being tested
- CESAREAN
- Medical subject headings
- Pain, Postoperative
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
CESAREANProcedure or surgery
Women hospitalized for cesarean section
| Study group | Role | What they receive |
|---|---|---|
| Cesarean | Women hospitalized for cesarean section Receives: Procedure: CESAREAN |
What is being measured
The primary outcome is the main question the study is designed to answer.
assess if clinically relevant pain measured by neuropathic pain questionnaire of 2 questions (DN2) > 3/10 one week after cesarean section(CS) was a risk factor for chronic post-surgical pain (CPSP)
Asses chronic pain 3 months after cesarean delivery in a cohort of women in University Hospital La Paz.A telephone interview with DN2 questionnaire was performed to all patients one week after surgery to assess the presence of neuropathic pain. CPSP diagnosis was retained in patients with the persistence of any symptom of pain or discomfort in the surgical site in the previous week, with an NRS score superior to 3/10 at rest and/or during movement 3 months after surgery.
Measured: three months
Secondary outcomes (1)
assess whether a pain intensity superior to 5/10 on the NRS one week after Cesarean Section was related to a higher incidence of CPSP at three months.
Asses chronic pain 3 months after cesarean delivery in a cohort of women in University Hospital La Paz. A telephone interview with Numeric Rating Scale (NRS) questionnaire was performed to all patients one week after surgery to assess the presence of moderate pain. (No pain: NRS=0; Mild pain: NRS=1-3; Moderate pain: NRS= 4-6; Severe pain=7-10) CPSP diagnosis was retained in patients with the persistence of any symptom of pain or discomfort in the surgical site in the previous week, with an NRS score superior to 3/10 at rest and/or during movement 3 months after surgery.
Measured: Three months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted21 Feb 2020
- Study start1 Mar 2017
- Primary completion30 Sep 2018
- Study completion30 Sep 2018
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- 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
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 610 participants (actual)
Sponsor and investigators
- Lead sponsor
- Instituto de Investigación Hospital Universitario La Paz
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Maria Cristina R ROCA, FEA, Principal investigator, Hospital Universitario La Paz
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04280432
- Sponsor's protocol ID
- PI-2564
- Status last verified
- Sep 2019
- First submitted
- 12 Sep 2019
- Last updated
- 16 Jun 2020
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 16 Jun 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Monocentric Observational Study: Postoperative Pain After Cesarean Section: Incidence and Risk Factors.
- ClinicalTrials.gov ID
- NCT04280432
- Acronym / sponsor ID
- PI-2564
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 610 participants (actual)
- Lead sponsor
- Instituto de Investigación Hospital Universitario La PazUniversity, hospital or other
- Study start
- 1 Mar 2017 (actual)
- Primary completion
- 30 Sep 2018 (actual)
- Study completion
- 30 Sep 2018 (actual)
- First posted
- 21 Feb 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.
The purpose of this prospective study was to assess chronic pain 3, and 12 months after cesarean delivery in a cohort of women in University hospital La Paz. We also aim to study the possible contribution of anesthetic and surgical risk factors for the development of Chronic post-surgical pain after cesarean (PCSCP)
Detailed description
- This prospective observational cohort study was conducted at University hospital La Paz. Women hospitalized for cesarean section from March 2017 to September 2018 were recruited on the hospital on the day of surgery, when research interviewers were available. Patients who agreed to participate were interviewed in person preoperatively,at discharge from Reanimation and 24 h postoperatively. Telephone follow-up interviews were conducted one week and 3,and 12 months following surgery. Intraoperative information was collected from the patient record or directly filled by a research person. Questionnaires applied in the present study are reflected in file 1.
- Study participants had to be aged between 18 and 50 years and American Society of Anesthesiologists scale (ASA) had to be I, II or III The exclusion criteria were history of major psychiatric disorder and inability to undertake a personal or telephone interview, ASA> III or dead fetus as result of caesarean section. The study was approved by the local ethics committee (registration number: PI-2564), and written informed consent was obtained from all patients.
Questions about age, race, gestational age, toxic habits, body mass index (BMI) (that was calculated from height and weight) previous vaginal delivery, cesarean delivery, other demographic, medical, surgical, and pre- operative pain variables were included.
-Were also recruited information about urgency level of caesarean using the classification proposed by Lucas et al.use of preoperative oxytocin, anesthesic technique before caesarean section (for example epidural for labor) and surgical and anesthesia variables.
Patients were visited within 24 h after surgery. Pain intensity was assessed as average pain at rest and on movement during the past 24 h using (NRS) and DN2 questionnaire. Also analgesic consumption and relevant side effects or complications were annotated.
Assessment after 3, and 12 months
-Patients were contacted by telephone by one of the authors at 3, and 12 months following cesarean section. This telephone interview usually takes no longer than 15 min. Chronic postsurgical pain (CPSP) was measured using the short form Brief Pain Inventory (BPI) BPI assesses the severity of pain and its impact on functioning. The pain severity items are presented as numeric rating scale (NRS). The patients were asked to rate their pain at rest and during movement in the previous week of the survey. Items of pain interference on function (general activity, mood, walking, work, relations with others, sleep and enjoyment of life ) are also presented as numeric rating scale (NRS) , are valued with 0 = does not interfere and 10 = interferes completely. There were also questions consumption of analgesics and neuropathic pains symptoms using Neuropathic pain (DN2) questionnaire.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Cesarean | – | Procedure: CESAREANWomen hospitalized for cesarean section |
Who may qualify
- Ages
- 18 to 50 years
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Adult
- Study population
- Women hospitalized for cesarean section from March 2017 to September 2018 were recruited on the hospital on the day of surgery. Patients who agreed to participate and meet the inclusion criteria
Key inclusion criteria (1 listed)
- Anesthesiologists scale (ASA) had to be I, II or III
Key exclusion criteria (1 listed)
- history of major psychiatric disorder and inability to undertake a personal or telephone interview, ASA> III or dead fetus as result of caesarean section
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 |
|---|---|---|
| CESAREANWomen hospitalized for cesarean section | Procedure or surgery | Cesarean |
Primary outcome
assess if clinically relevant pain measured by neuropathic pain questionnaire of 2 questions (DN2) > 3/10 one week after cesarean section(CS) was a risk factor for chronic post-surgical pain (CPSP)
Time frame: three months
Asses chronic pain 3 months after cesarean delivery in a cohort of women in University Hospital La Paz.A telephone interview with DN2 questionnaire was performed to all patients one week after surgery to assess the presence of neuropathic pain. CPSP diagnosis was retained in patients with the persistence of any symptom of pain or discomfort in the surgical site in the previous week, with an NRS score superior to 3/10 at rest and/or during movement 3 months after surgery.
1 secondary outcome
assess whether a pain intensity superior to 5/10 on the NRS one week after Cesarean Section was related to a higher incidence of CPSP at three months.
Time frame: Three 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 16 Jun 2020.
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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.
Maria Cristina R ROCA, FEA principal investigator
Hospital Universitario La Paz
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 Chronic Postoperative Pain and Cesarean Section Complications, run by Instituto de Investigación Hospital Universitario La Paz at 1 site in Spain.
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 16 Jun 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 Spain. 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?
assess if clinically relevant pain measured by neuropathic pain questionnaire of 2 questions (DN2) > 3/10 one week after cesarean section(CS) was a risk factor for chronic post-surgical pain (CPSP) (time frame: three months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 16 Jun 2020.