Ketamine + Cognitive Training for Suicidality in the Medical Setting: Pilot

Inclusion Criteria: Participants will: 1. be between the ages of 18 and 65 years 2. be a medical inpatient referred for psychiatric consultation/liaison due to suicidality 3. possess a level of judgment and understanding sufficient to agree to all procedures required by the protocol and must sign an informed consent document 4. be deemed an appropriate and reasonable medical candidate for intravenous ketamine by a physician authorized to prescribe medication to the patient during inpatient hospitalization Exclusion Criteria: 1. Presence of current psychotic or autism spectrum disorder or current delirium 2. Use of a Monoamine Oxidase Inhibitor (MAOI) within the previous 2 weeks 3. Current pregnancy or breastfeeding 4. Reading level \<5th grade as per WRAT-3 reading subtest 5. Past intolerance or hypersensitivity to ketamine 6. Patients taking any of the following medications: St John's Wort, theophylline, tramadol, metrizamide 7. Patients who have received ECT in the past 6 months prior to intake 8. Patients at risk for withdrawal related issues (e.g., delirium tremens, severe opiate withdrawal) or who present with substance-induced psychosis 9. Patients who, based on expressed preference and/or home geographic location, are deemed by the Psychiatric Consultation/Liaison service to be likely to receive inpatient psychiatric hospitalization at an alternate location outside of Western Psychiatric Institute \& Clinic