Table 1.
Inclusion |
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Age 18–55 y, inclusive |
Primary diagnosis of DSM-5 major depressive disorder or bipolar disorder |
Current moderate-to-severe depressive episode |
Minimum of 2 failed antidepressant medication trials of adequate dose and duration (at least one trial within the current depressive episode)a |
Quick Inventory of Depressive Symptomatology, Self-Rated, total score >10 at baseline |
24-item Hamilton Depression Rating Scale total score >18b |
Exclusion |
Other current DSM-5 disorders, with the exception of anxiety disorders and attention deficit disorder |
Electroconvulsive therapy within the past 6 months |
Lifetime history of DSM-5 cognitive disorder |
Body mass index >40 |
Inadequately-treated hypertensionb |
Daily use of angiotensin converting enzyme inhibitor or angiotensin receptor blocker ** |
Symptomatic coronary artery disease or congestive heart failureb |
History of transient ischemic attack or neurologic signs during the past yearb |
History of or susceptibility to malignant hyperthermiab |
Any contraindication to propofolb |
Diabetes requiring insulinb |
Abnormal kidney functionb |
Daily use of opioid medicationb |
Daily use of benzodiazepine medication |
Pregnant or breastfeeding |
Psychiatric instability requiring a higher level of care |
Incompetent to provide consent |
Criteria for propofol participants are listed. Electroconvulsive therapy (ECT) comparison patients were selected based on similar, but not identical, criteria (as noted by a and b).
aECT comparison patients were medication-resistant by clinical history, but antidepressant medication trials were not well documented in all cases.
bCriterion not applied to ECT comparison patients