Collecting Interval Timed Incisional Epidermal and Dermal Tissue Samples During Surgical Procedures to Profile Temporal Response of Tissue After Noxious Stimuli
Public ClinicalTrials.gov record NCT04224870. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Single Cohort Study Collecting Interval Timed Incisional Epidermal and Dermal Tissue Samples During Surgical Procedures to Profile Temporal Response of Tissue After Noxious Stimuli.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Background: Opioids are a class of drug that are often used to manage pain after a person has surgery. Because of the current opioid crisis, researchers want to improve ways to manage pain after surgery with fewer side effects. To do this, they need to understand pain better. In this study, they want to measure chemical reactions and find genes involved in producing the pain that people feel after surgery. Objective: To find the pain signals starting at the site of skin incision during surgery. Eligibility: People age 18 and older who are having a surgery that will last for at least 4 hours. Design: The participant s primary surgeon will make sure he or she is eligible for surgery. Participants will complete a generalized pain questionnaire before the day of surgery. This will give a baseline measurement. During surgery, 4 to 6 tissue samples at the site of incision will be taken at the following time points: when the surgery starts at 1, 2, 4, and 6 hours when the wound is closed (if the surgery lasts longer than 8 hours). The samples will only be taken if they will not prevent the wound from healing properly. For the first 2 days after surgery, participants will complete short questionnaires about their level of pain. Each will take less than 5 minutes to complete. Their answers will be protected....
Study identification
- NCT ID
- NCT04224870
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 12 participants
Conditions and interventions
Conditions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Feb 11, 2020
- Primary completion
- Nov 6, 2020
- Completion
- Mar 14, 2021
- Last update posted
- Mar 3, 2026
2020 – 2021
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| National Institutes of Health Clinical Center | Bethesda | Maryland | 20892 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT04224870, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Mar 3, 2026 · Synced Sep 8, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04224870 live on ClinicalTrials.gov.