Anesthesia, Depression, Ketamine
Conditions
Brief summary
Ketamine hydrochloride, an anesthetic medication, has been demonstrated to acutely and rapidly improve depressive symptoms but not yet been adequately studied for this effect when used as part of a general anesthetic for surgery. This proposed single-centre, double-blinded, randomized clinical trial of adult patients with depression presenting for gynecologic surgery would compare severity of depressive symptoms between patients receiving and not receiving ketamine as part of their general anesthetic.
Interventions
As part of anesthetic induction, the addition of ketamine hydrochloride 0.5mg/kg.
As part of the patient's anesthetic induction, they will receive propofol.
As part of the patient's anesthetic induction, they will receive fentanyl.
Sponsors
Study design
Eligibility
Inclusion criteria
* Diagnosis of major depressive disorder * Presentation for gynecologic surgery requiring a general anesthetic
Exclusion criteria
* Marked co-morbid cardiovascular disease * Marked co-morbid respiratory disease * History of intracranial hypertension * History of seizures * ASA Physical Status Classification IV or greater * History of psychosis * Current pregnancy * Contraindication to ketamine administration
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Depression Severity | At time of discharge from post-anesthetic care unit, until 3 hours post operatvie | Severity of depression as measured by Montgomery-Asberg Depression Rating Scale (MADRS), 0-60 where 0 to 6 is normal, 7-19 is mild depression, 20-34 is moderate depression, and \>34 is severe depression. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Pain Score | Pre-operatively | Verbally reported numeric pain score (out of 10) |
| Analgesia use | Pre-operatively | Morphine equivalents (in milligrams) |