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Clinical Trial Details — Status: Withdrawn

Administrative data

NCT number NCT03994991
Other study ID # 201906717
Secondary ID
Status Withdrawn
Phase N/A
First received
Last updated
Start date February 1, 2021
Est. completion date May 19, 2021

Study information

Verified date May 2021
Source University of Iowa
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Patients with high severity of post-surgical pain scores will be randomized to transcranial magnetic stimulation (TMS) vs sham TMS groups. Both group of patients will have 10 TMS sessions during 5 days. Our hypothesis is that, the reduction in the severity of pain scores will be greater among those patients who are randomized to active TMS group compared to sham TMS group. The investigators will explore how improvements in pain correlate with changes in brain network connectivity.


Description:

More than 25 million adults suffer from chronic pain in the United States making it the single most common symptom for which patients seek medical care. Although chronic pain can develop from a variety conditions, surgery is one of the most common and the incidence of chronic pain after thoracic surgery is particularly high. Opioids have been a mainstay therapy for post-surgical pain, but there is increasing awareness that post-surgical opioid use is a risk factor for addiction. Consequently, there are major nationwide efforts underway to limit opioid use in the post-surgical setting and identify safer options. One promising modality that has emerged in recent years is the use of non-invasive brain stimulation using transcranial magnetic stimulation (TMS). TMS provides a method for noninvasively modulating cortical excitability, and a number of studies have shown that non-invasive neuromodulation can reduce pain in patients suffering from chronic pain. Using resting state functional magnetic resonance imaging, the investigators propose to investigate changes in brain networks after TMS and additionally investigate individual differences in brain network connectivity patterns that predict the effectiveness of TMS. The investigators expect that active TMS, compared to sham TMS, will normalize brain network connectivity and lead to lower pain and opioid use after surgery. In addition, by assessing pre-surgical brain networks, the investigators hope to identify brain connectivity patterns that predict efficacy of TMS as a post-surgical treatment option. The investigators will recruit 36 subjects who've undergone thoracic surgery. The investigators will recruit primarily in-patients but may also recruit patients who have gone home after surgery. During weeks 2-3 Post-Surgery, 5 study visits will be completed, each ranging in duration from 1 1/2 - 3 hours. All 5 visits include 2 short TMS sessions (10 total), pain and mood assessments. At V1 and V5, functional magnetic resonance imaging (fMRI) scans will be completed, as well as additional pain and health related assessments (many only done at V1). Also, short, follow-up phone calls will be completed at 3 and 6 months post-surgery to assess pain and other outcomes.


Recruitment information / eligibility

Status Withdrawn
Enrollment 0
Est. completion date May 19, 2021
Est. primary completion date May 19, 2021
Accepts healthy volunteers No
Gender All
Age group 18 Years to 80 Years
Eligibility Inclusion Criteria: - English speaking - 18 to 80 years old - scheduled thoracic surgery w/one of the following procedures: thoracotomy, pneumonectomy, removal of lung other than bilobectomy, pneumonectomy, completion pneumonectomy, sleeve lobectomy, segmentectomy, single or multiple wedge resection, or thoracoscopy with excision-plication of bullae, with lobectomy, with partial or total pulmonary decortication or with wedge resection of lung. - Post-surgery pain equal or greater 4 at phone screen Exclusion Criteria: - limitations of self-expression or visual dysfunction (as assessed by research team member during inpatient screen) - having emergency surgery - bipolar, schizophrenia or other psychotic disorders - Alzheimer's, dementia, epilepsy, traumatic brain injury or other similarly impacting neurological issues - pregnancy - incarceration - pain in thoracic region for last two or more months - additional MRI/TMS exclusions: (implants, stents, neurostimulators, metal, claustrophobia, certain medications)

Study Design


Related Conditions & MeSH terms


Intervention

Device:
active TMS
Transcranial magnetic stimulation
sham TMS
Sham transcranial magnetic stimulation

Locations

Country Name City State
United States University of Iowa Iowa City Iowa

Sponsors (1)

Lead Sponsor Collaborator
Emine Bayman

Country where clinical trial is conducted

United States, 

References & Publications (3)

Bayman EO, Brennan TJ. Incidence and severity of chronic pain at 3 and 6 months after thoracotomy: meta-analysis. J Pain. 2014 Sep;15(9):887-97. doi: 10.1016/j.jpain.2014.06.005. Epub 2014 Jun 23. Review. — View Citation

Bayman EO, Parekh KR, Keech J, Larson N, Vander Weg M, Brennan TJ. Preoperative Patient Expectations of Postoperative Pain Are Associated with Moderate to Severe Acute Pain After VATS. Pain Med. 2019 Mar 1;20(3):543-554. doi: 10.1093/pm/pny096. — View Citation

Bayman EO, Parekh KR, Keech J, Selte A, Brennan TJ. A Prospective Study of Chronic Pain after Thoracic Surgery. Anesthesiology. 2017 May;126(5):938-951. doi: 10.1097/ALN.0000000000001576. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary The change in the severity of pain score after 5 days of active vs sham TMS. The change in pain score will be calculated based on the following 2 pain scores:
Day 1 NRS is the severity of pain collected at the beginning of the first study visit before the TMS and MRI sessions.
Day 5 NRS is the severity of pain collected at the end of the 5th study visit, after the second TMS and the MRI session.
The change in pain score is the difference between the day 5 NRS and the day 1 NRS.
5 days
Secondary The presence of thoracic surgery related chronic pain at 6 months after surgery. Pain assessments at 6 months aftger surgery will be made with phone interview. Patients will be asked if they still have pain related to their thoracic surgery ('Do you currently have pain related to your thoracic surgery? [yes/ no]') 6 months after thoracic surgery
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