1) Murrough, Perez, et al. “Rapid and Longer-Term Antidepressant Effects of Repeated Ketamine Infusions in Treatment-Resistant Major Depression” Biological Psychiatry 2013 Aug 15; 74(4): 250–256.
SUMMARY: In this article, there were 24 patients treated with six IV infusions of ketamine (.5mg/kg) over 12 days. The overall response rate was 71% as defined as a reduction in the MADRS scale by greater than 50%. The median time to relapse after the last ketamine infusion was 18 days. 25% were symptom free at 90 days, 75% of patients had symptoms free days between 11-27 days. Side effects were reported to be a mild significant increase in dissociative symptoms. One patient had to discontinue therapy due to an increase in blood pressure that did not respond to medications (highest BP 180/115).
2) Shiroma, Johns et al. “Augmentation of response and remission to serial intravenous subanesthetic ketamine in treatment resistant depression” Journal of Affective Disorders. 2014 Feb;155:123-9.
SUMMARY: In this article, there were 14 patients treated with six IV infusions during a 12 day period. 12 subjects finished all six infusions with 92% response rate and 66% went into remission. 5 out of 11 responders remained in “response status” during the next 28 days. For the 6 out of 11 responders that relapsed, the mean time was 16 days. Response was defined as ≥50% improvement in baseline MADRS score and remission was defined as MADRS score ≤9. No subject experienced severe dissociative symptoms or hemodynamic changes that required stopping the infusions.
3) Sanacora, Frye, McDonald, et al. “A Consensus Statement on the Use of Ketamine in the Treatment of Mood Disorders” JAMA Psychiatry. April 2017;74(4):399-405.
SUMMARY: This review and consensus statement provides a general overview of the data on the use of ketamine for the treatment of mood disorders and highlights the limitations of the existing knowledge. The suggestions provided are intended to facilitate clinical decision making and encourage an evidence-based approach to using ketamine in the treatment of psychiatric disorders considering the limited information that is currently available. This article provides information on potentially important issues related
4) Yoon G, Petrakis IL, Krystal JH. Association of Combined Naltrexone and Ketamine With Depressive Symptoms in a Case series of Patients With Depression and Alcohol Use Disorder. JAMA Psychiatry. Published online January 09, 201976(3):337–338. doi:10.1001/jamapsychiatry.2018.3990.
SUMMARY: This article discusses the interaction between ketamine and naltrexone and how it could be used to benefit efforts in addiction recovery medicine. It suggests that ketamine may be a useful adjunct in the effort to treat substance use disorders.
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