Heart SurgeryNCT02660749
The Effect Of Multimodal Analgesia On Chronic Pain
An observational study of Heart Surgery, run by Tobb University of Economics and Technology.
Trial summary
This study aimed to show the characteristics and predictors of chronic pain after a mini-thoracotomy. Non-Coronary Heart Surgery patients were scheduled for the study. In patients with acute postoperative period use of tramadol retard, metamizole, and dexketoprofen the effects on the development of chronic pain and… Read more about this study
- Who is it for?
- Ages 20 to 70 yearsHealthy volunteers can take part
- Conditions the study is for
- Heart Surgery
- How many people
- 80 participants
- Where
- No sites listed yet
- Study dates
- May 2015to Sep 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 20 to 70 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Study population: Both female and male participants are taking part in the study.
Who may be able to join
- Patients included between 20-70 years
- ASA 1-4
- Euroscore value lower than 7
- Undergoned non coronary heart surgery (minithoracotomy)
- Intensive care has been discharged from the service in 24 hours , with patients given tramadol retard , metamizol, Dexketoprofen on postoperatif first day to discharged from the hospital.
Who cannot join
- Diabetes mellitus
- Chronic renal failure
- COPD
- Uncontrolled hypertension
- Epilepsy
- Psychiatric disease
Show all 17Show fewer
- Malignancy
- Patients with a history of cerebrovascular disease
- Patients with ischemia
- Patients suffering from chronic pain and analgesic use
- Patients taking antidepressants and antiepileptic drug
- Off-pump technique used or redo undergo cases
- Ongoing postoperative time thoracic or mediastinal drains more than 48 hours remaining patients, bleeding or patients who received repeated revisions due to infection
- More than 24 hours remaining in intensive care patients
- Patients with long discharge duration 1 week
- Patients who discontinued due to side effects of tramadol may begin after medicines.
- Postoperative wound infection.
About this study
Official title: The Effect Of Tramadol, Metamizol and Dexketoprofen Combination On Chronic Pain Development After Heart Surgery
This study aimed to show the characteristics and predictors of chronic pain after a mini-thoracotomy. Non-Coronary Heart Surgery patients were scheduled for the study. In patients with acute postoperative period use of tramadol retard, metamizole, and dexketoprofen the effects on the development of chronic pain and its character have been analyzed.
Read the detailed description
This prospective study analyzed surgical thoracotomy patients treated with analgesic drugs with pain levels equal to or higher than four on the Douleur Neuropathique scale. The screening test for neuropathic pain is the Douleur Neuropathique 4 (DN4). Postoperative 3rd-month DN4 questionnaires are used to predict persistent postoperative neuropathic pain. Patients were separated into two groups with those who developed chronic pain and those who did not on the 3rd-month of post-operation. Demographical characteristics and clinical findings regarding the situation of post-operation 3rd-month pain include but are not limited to; gender, body mass index (BMI), preoperative and postoperative clinical examination status (EUROSCORE), changes in the average VAS scores during hospitalization, neuropathic pain scores, duration of chest drains, duration of cardiopulmonary bypass, cross-clamp time, time under anesthesia, duration of stay in the ICU (hours), duration of pain after being discharged (days), additional drug requests by the patient, and any possible complications that arise. In addition, the presence and distribution of somatic (throbbing, tingling, spasm, tautening, stabbing, scouring), neuropathic (electric shock, burning, numbness, prickling, loss of sense), as well as other symptoms such as allodynia and hyperalgesia experienced by chronic patients three months post-operation were also analyzed and compared non-chronic patients.
- Conditions
- Heart Surgery
What is being measured
The primary outcome is the main question the study is designed to answer.
neuropathic pain assesement by DN4 score after minithoracotomy
Measured: outcome measure assessed 3 months after the surgery
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted21 Jan 2016 (estimated)
- Study startMay 2015
- Primary completionSep 2016
- Study completionSep 2016
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Heart SurgeryStudies 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
- Case-control
- Time perspective
- Prospective
- Enrolment
- 80 participants (actual)
Sponsor and investigators
- Lead sponsor
- Tobb University of Economics and Technology
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Hasibe Gül Baytan, Tobb University of Economics and Technology
- Investigators
- H. Gul Baytan Yildiz, MD, Principal investigator, republic of turkey ministry of health
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02660749
- Sponsor's protocol ID
- 2015-PMS-41
- Status last verified
- Oct 2026
- First submitted
- 18 Jan 2016
- Last updated
- 6 Oct 2026
- Results posted
- No
- Data monitoring committee
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 6 Oct 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Effect Of Tramadol, Metamizol and Dexketoprofen Combination On Chronic Pain Development After Heart Surgery
- ClinicalTrials.gov ID
- NCT02660749
- Acronym / sponsor ID
- 2015-PMS-41
- Conditions
- Heart Surgery
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 80 participants (actual)
- Lead sponsor
- Tobb University of Economics and TechnologyUniversity, hospital or other
- Study start
- May 2015 (actual)
- Primary completion
- Sep 2016 (actual)
- Study completion
- Sep 2016 (actual)
- First posted
- 21 Jan 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.
This study aimed to show the characteristics and predictors of chronic pain after a mini-thoracotomy. Non-Coronary Heart Surgery patients were scheduled for the study. In patients with acute postoperative period use of tramadol retard, metamizole, and dexketoprofen the effects on the development of chronic pain and its character have been analyzed.
Detailed description
This prospective study analyzed surgical thoracotomy patients treated with analgesic drugs with pain levels equal to or higher than four on the Douleur Neuropathique scale. The screening test for neuropathic pain is the Douleur Neuropathique 4 (DN4). Postoperative 3rd-month DN4 questionnaires are used to predict persistent postoperative neuropathic pain. Patients were separated into two groups with those who developed chronic pain and those who did not on the 3rd-month of post-operation. Demographical characteristics and clinical findings regarding the situation of post-operation 3rd-month pain include but are not limited to; gender, body mass index (BMI), preoperative and postoperative clinical examination status (EUROSCORE), changes in the average VAS scores during hospitalization, neuropathic pain scores, duration of chest drains, duration of cardiopulmonary bypass, cross-clamp time, time under anesthesia, duration of stay in the ICU (hours), duration of pain after being discharged (days), additional drug requests by the patient, and any possible complications that arise. In addition, the presence and distribution of somatic (throbbing, tingling, spasm, tautening, stabbing, scouring), neuropathic (electric shock, burning, numbness, prickling, loss of sense), as well as other symptoms such as allodynia and hyperalgesia experienced by chronic patients three months post-operation were also analyzed and compared non-chronic patients.
Study design
- Observational model
- Case-control
- Time perspective
- Prospective
Who may qualify
- Ages
- 20 to 70 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
- Study population
- Both female and male participants are taking part in the study.
Key inclusion criteria (5 listed)
- Patients included between 20-70 years
- ASA 1-4
- Euroscore value lower than 7
- Undergoned non coronary heart surgery (minithoracotomy)
- Intensive care has been discharged from the service in 24 hours , with patients given tramadol retard , metamizol, Dexketoprofen on postoperatif first day to discharged from the hospital.
Key exclusion criteria (17 listed)
- Diabetes mellitus
- Chronic renal failure
- COPD
- Uncontrolled hypertension
- Epilepsy
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
neuropathic pain assesement by DN4 score after minithoracotomy
Time frame: outcome measure assessed 3 months after the surgery
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 6 Oct 2026.
- Related InfoLink provided by the sponsor.
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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.
H. Gul Baytan Yildiz, MD principal investigator
republic of turkey ministry of health
Questions about this trial
What is this clinical trial studying?
An observational study of Heart Surgery, run by Tobb University of Economics and Technology.
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 5 inclusion and 17 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 6 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.
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?
neuropathic pain assesement by DN4 score after minithoracotomy (time frame: outcome measure assessed 3 months after the surgery). 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 6 Oct 2026.