Observational Study of Ketamine Infusions for the Treatment of Chronic Pain

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

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.

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.

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.