Observational Study of Ketamine Infusions for the Treatment of Chronic Pain

Chronic Pain Clinical Trial

Official title:

Ketamine Infusion for the Treatment Chronic Pain in Adults: a Prospective Observational Study to Characterize Predictors and Outcomes

Clinical Trial Details — Status: Enrolling by invitation

Administrative data

• NCT number: NCT05477004
• Other study ID #: 62561
• Status: Enrolling by invitation
• Start date: June 1, 2022
• Est. completion date: June 1, 2025

Study information

• Verified date: May 2024
• Source: Stanford University
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

This observational study will collect prospectively specified data on patient characteristics and clinically relevant outcomes in patients who receive a ketamine infusion at Stanford Pain Management Center for the treatment of chronic pain, with the goal of identifying treatment responders and relationships between patient characteristics and treatment response.

Description:

Ketamine is a type of anesthetic drug which has been used off-label to treat chronic pain. The effectiveness of intravenous ketamine and its duration of effect are not well-understood. There is high variability in response to ketamine, and it remains unclear which patient characteristics are associated with favorable outcomes. This observational study will collect a wide range of patient-reported outcomes via digital surveys: once at baseline before treatment, and up to 7 follow-up surveys for up to 12 months following a single ketamine infusion. Survey data will be supplemented by clinical data obtained from electronic medical records.

Recruitment information / eligibility

• Status: Enrolling by invitation
• Enrollment: 100
• Est. completion date: June 1, 2025
• Est. primary completion date: June 1, 2025
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Has been seen at Stanford's Pain Management Center for a doctor's visit at least once.

• Is scheduled to undergo at least 1 ketamine infusion for the treatment of any chronic pain condition.

• Have a valid email address and consents to receiving surveys by email.

• Able to read, understand, and respond to English-language surveys on an electronic device such as a cell phone, tablet, or computer.

• Able to read, understand, and provide written, dated informed consent.

Exclusion Criteria:

• Has their ketamine infusion cancelled, which may occur before or after consenting to this study.

Related Conditions & MeSH terms

• Chronic Pain

Intervention

Drug:
• Ketamine
A multi-day continuous ketamine infusion delivered intravenously at subanesthetic doses in a monitored setting

Locations

Country	Name	City	State
United States	Stanford University	Stanford	California

Sponsors (1)

Lead Sponsor	Collaborator
Theresa Lii

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	Change from baseline opioid use; measured with 2 questions	Question 1: Participants are asked whether they have used any opioid medications since their last ketamine infusion (yes/no). Question 2: Participants are asked to rate how their opioid use has changed on a 4-point scale ranging from "I have not used any opioids since my last ketamine infusion" to "I am using more opioids after my last ketamine infusion."	1 week, 2 weeks, 1 month, 2 months, 3 months, 6 months, 12 months (or up to the time of their next ketamine infusion)
Other	Change from baseline pain catastrophizing score; measured with Pain Catastrophizing Scale - Short Form	Pain Catastrophizing Scale - Short Form is a 4-item scale with a total score ranging from 0-16, with higher scores indicative of more catastrophizing.	1 week, 2 weeks, 1 month, 2 months, 3 months, 6 months, 12 months (or up to the time of their next ketamine infusion)
Other	Change from baseline pain interference score; measured with PROMIS Pain Interference	PROMIS Pain Interference is a computerized adaptive test with results reported as a T-score (mean score of 50 and standard deviation of 10), with higher T-scores indicative of more pain interference.	1 week, 2 weeks, 1 month, 2 months, 3 months, 6 months, 12 months (or up to the time of their next ketamine infusion)
Other	Change from baseline physical function score; measured with PROMIS Physical Function	PROMIS Physical Function is a computerized adaptive test with results reported as a T-score (mean score of 50 and standard deviation of 10), with higher T-scores indicative of better physical function.	1 week, 2 weeks, 1 month, 2 months, 3 months, 6 months, 12 months (or up to the time of their next ketamine infusion)
Other	Change from baseline depression score; measured with PROMIS Depression	PROMIS Depression is a computerized adaptive test with results reported as a T-score (mean score of 50 and standard deviation of 10), with higher T-scores indicative of more depression.	1 week, 2 weeks, 1 month, 2 months, 3 months, 6 months, 12 months (or up to the time of their next ketamine infusion)
Other	Change from baseline anxiety score; measured with PROMIS Anxiety	PROMIS Anxiety is a computerized adaptive test with results reported as a T-score (mean score of 50 and standard deviation of 10), with higher T-scores indicative of more anxiety.	1 week, 2 weeks, 1 month, 2 months, 3 months, 6 months, 12 months (or up to the time of their next ketamine infusion)
Other	Change from baseline sleep disturbance score; measured with PROMIS Sleep Disturbance	PROMIS Sleep Disturbance is a computerized adaptive test with results reported as a T-score (mean score of 50 and standard deviation of 10), with higher T-scores indicative of more sleep disturbance.	1 week, 2 weeks, 1 month, 2 months, 3 months, 6 months, 12 months (or up to the time of their next ketamine infusion)
Other	Change from baseline global health score; measured with PROMIS Global Health	PROMIS Global Health is a computerized adaptive test with results reported as a T-score (mean score of 50 and standard deviation of 10), with higher T-scores indicative of better overall physical health, mental health, social health, pain, fatigue, and overall perceived quality of life.	1 week, 2 weeks, 1 month, 2 months, 3 months, 6 months, 12 months (or up to the time of their next ketamine infusion)
Other	Change from baseline body areas affected by pain; measured with CHOIR Body Map	CHOIR Body Map is a validated self-report body map where participants select areas of the body affected by pain, with a higher number of selected areas indicative of more widespread pain.	1 week, 2 weeks, 1 month, 2 months, 3 months, 6 months, 12 months (or up to the time of their next ketamine infusion)
Primary	Change from baseline Patient Global Impression of Change (PGIC) in overall status; measured with PGIC Scale	The PGIC Scale is a single-question 7-point Likert scale ranging from "Very much improved" to "Very much worse."	1 week, 2 weeks, 1 month, 2 months, 3 months, 6 months, 12 months (or up to the time of their next ketamine infusion)
Secondary	Change from baseline average pain intensity; measured with Numeric Rating Scale (NRS)	Participants rate their average pain intensity over the last 7 days using whole numbers on a 0-to-10 scale, with higher values indicative of more pain.	1 week, 2 weeks, 1 month, 2 months, 3 months, 6 months, 12 months (or up to the time of their next ketamine infusion)