Quantitative Sensory Psychophysical Correlates of Pain in Pregnant Women With OUD

Completed

• Conditions: Pregnancy Related; Opioid-use Disorder
• Interventions: Other: OUD

• Registration Number: NCT04888962
• Lead Sponsor: University of Pittsburgh

Brief Summary

This is a prospective observational case-control study comparing quantitative sensory testing data preformed during the third trimester of pregnancy and within 24 hours postpartum in women on medication-assisted treatment for opioid use disorder (OUD) to a gestational age-controlled cohort of women who do not have OUD.

The primary goal is to measure elements of quantitative sensory testing including temperature pain threshold, temperature pain tolerance, and thermal and mechanical temporal summation for patients with opioid use disorder on medication-assisted treatment (MAT), and compare these results to gestational age matched controlled pregnant patients not on MAT.

Detailed Description

The objective of this study is to measure elements of quantitative sensory testing including temperature pain threshold, temperature pain tolerance, and thermal and mechanical temporal summation for patients with opioid use disorder on medication-assisted treatment (MAT), and compare these results to gestational age matched controlled pregnant patients not on MAT.

The hypothesis is that women requiring maintenance opioids during pregnancy will have a significant difference in pain sensitivity in the third trimester and immediately postpartum as compared to women who did not require maintenance opioids during pregnancy.

Study Timeline

• Study First Submitted: 2021-05-11
• Study First Submitted QC: 2021-05-11
• Study First Posted: 2021-05-17
• Study Start: 2021-06-14
• Primary Completion: 2021-09-30
• Study Completion: 2021-09-30
• Status Verified: 2021-10
• Last Update Submitted: 2021-10-04
• Last Update Posted: 2021-10-05

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Female
• Target Recruitment: 13

Inclusion Criteria

Subjects that will be included in the prospective cohort group:

• individuals at least 18 years of age
• at least 28 weeks gestation (third trimester)
• on medication-assisted treatment for opioid use disorder, including methadone or suboxone.

Patients who will be included in the control group:

• individuals at least 18 years of age
• at least 28 weeks gestation (third trimester)
• have not been on been on opioids in the past 12 months.

Exclusion Criteria

• Those who are unable to participate in informed consent discussions,
• Unable to give informed consent for any reason,
• Not fluent in English (surveys are validated in English language)
• Unable to participate fully in all study procedures for any reason including sensory deficits, scar tissue, or infection at any QST sites.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Prospective cohort group	OUD	This cohort will include pregnant patients with a history of opiate use disorder (OUD) who will be followed from the third trimester of pregnancy until 24 hours postpartum.

Primary Outcome Measures

Name	Time	Method
QST Pain Threshold	Completed within 24 hours postpartum/ after delivery	Quantitative sensory testing is a pain sensitivity test in which the patient will tell the investigator the moment they first feel pain
QST Pain Tolerance	Completed within 24 hours postpartum/ after delivery	Quantitative sensory testing is a pain sensitivity test in which the patient will tell the investigator the moment the sensation becomes uncomfortable.
QST Pain threshold	Completed at a time point antepartum/ before delivery	Quantitative sensory testing is a pain sensitivity test in which the patient will tell the investigator the moment they first feel pain

Trial Locations

Locations (1)

University of Pittsburgh Medical Center; 🇺🇸 Pittsburgh, Pennsylvania, United States