The Canadian Rapid Treatment Center of Excellence (CRTCE) is a healthcare facility principally focused on providing best practices of intravenous ketamine treatment to adult patients suffering from treatment resistant depression. Patients who have received IV ketamine at the clinic are eligible to participate in this study where genetic biomarkers are correlated with response to IV ketamine.
Study Type
OBSERVATIONAL
Enrollment
85
Patients will provide two saliva swabs containing genetic materials.
Canadian Rapid Treatment Centre of Excellence
Mississauga, Ontario, Canada
Genetic Biomarkers
Genetic markers associated with metabolism of IV ketamine will be assessed
Time frame: 1 month
Quick Inventory of Depressive Symptomatology Self Report 16-Item
The QIDS-SR16 is a self-report assessment used to evaluate depression severity in patients with a Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, diagnosis of Major Depressive Episode. In total, there are 16 individual questions evaluating 9 DSM domains. The highest score is 27, indicating severe depression, while the lowest score is 0, which would suggest a complete absence of depressive symptoms.
Time frame: Over 1-2 weeks
Generalized Anxiety Disorder 7-item
The GAD-7 is a 7 item self-report assessment used to evaluate symptoms of anxiety. The scale ranges from 0 (not at all) to 3 (nearly every day). To total score ranges from 0 suggesting a lack anxiety symptoms to 21, indicating severe anxiety.
Time frame: Over 1-2 weeks
Snaith-Hamilton Pleasure Scale
The SHAPS assessment is a 14 item self report tool used to measure anhedonia. Each item can be have a response of 1 (Definitely agree), 2(Agree), 3(Disagree), and 4(definitely disagree). The total score ranges from 14 to 56, in which higher scores on the assessment indicate higher levels of anhedonia.
Time frame: Over 1-2 weeks
Sheehan Disability Scale
The SDS contains 3 items, each ranging between zero to ten. The SDS is a self-reported assessment of disability within the context of depression. The total score ranges from 0, indicating no impairment, to 30, indicating severe impairment.
Time frame: Over 4 initial infusions
Clinician Administered Dissociative States Scale
The CADSS is a 23-item assessment administered by a clinician in order to evaluate dissociative symptoms. Each item is evaluated on a scale from 0, suggesting no dissociative symptom, to 4, suggesting extreme dissociation. In total, patients can score between 0 to 92, indicating extreme dissociation.
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Time frame: Over 1-2 weeks
Work Productivity and Activity Impairment Questionnaire (WPAI)
WPAI is a questionnaire used to evaluate lost productivity due to depression. scores are presented as percentages (multiplying the scores by 100), with 0% representing no impact on productivity and 100% representing complete impact on productivity.
Time frame: 1 month
Mystical Experience Questionnaire (MEQ)
Mystical Experience Questionnaire (MEQ) is a self-report measure that has been used to assess the effects of hallucinogens in laboratory studies. Some studies suggest that mysticism may be associated with a response to ketamine. The MEQ is a 30 item questionnaire, with each item ranging from 0 to 5. A higher score denotes a strong mystical experience.
Time frame: 1 month
Childhood Trauma Questionnaire (CTQ)
The CTQ assesses five types of childhood trauma: 1)Emotional neglect 2) physical abuse 3) emotional abuse 4)physical neglect 5) sexual abuse. Each item being rated in 5 answer choice from 1 to 5 (never, rarely, sometimes, often or very often)
Time frame: 1 month
UCLA Loneliness Scale (UCLA)
20 item Self report scale measuring loneliness. Scales range from 0 to 60 with higher scores indicating a higher level of loneliness.
Time frame: 1 month
Diet Screener Questionnaire
Captures data regarding an individuals dietary habits over the past month
Time frame: 1 month
Quality of Life Questionnaire (EQ-3D-5L)
EQ-5D-5L measures health outcome self-completed by respondents. It consists of EQ-5D-5L descriptive system and EQ visual analogue scale (EQ-VAS). The descriptive system comprises of 5 dimensions: mobility, self-care, usual activities, pain/discomfort, and anxiety/depression. Each has 5 levels (1-no problem, 2-slight problems, 3-moderate problems, 4-severe problems, 5-extreme problems). The responses are used to generate Health Status Index (HSI). HSI range is -0.148 to 0.949, is anchored at 0 (dead) and 1 (full health).
Time frame: 1 month
Perceived Health Questionnaire (PHQ)
PHQ-9 is 9-item, self-reported scale assessing 9 symptom domains of Diagnostic and Statistical Manual of Mental Disorders, Major Depressive Disorder criteria. Each item is rated on 4-point scale (0 = Not at all, 1 = Several Days, 2 = More than half days, 3 = Nearly every day). The scores are summed for a total score ranging from 0-27. Higher score indicates greater severity of depression. Severity of PHQ-9 categorized as follows: None-minimal (0-4), Mild (5-9), Moderate (10-14), Moderately Severe (15-19), Severe (20-27). The recall period is 2 weeks.
Time frame: 1 month