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Andrew W. Bismark

8 papers in the library · 51 citations · publishing 2022-2026

Papers

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Real‐World Effectiveness and Cost‐Differential of Intranasal Esketamine Versus Intramuscular Ketamine

Psychiatric Research and Clinical Practice July 2, 2026 Kush V. Bhatt, Tara Austin, Danny Alam et al.

Objective This study evaluated whether intramuscular (IM) ketamine is non‐inferior to intranasal (IN) esketamine for treatment‐resistant depression (TRD) and assessed differences in safety and healthcare costs. Methods In a retrospective, observational sequential cohort at the VA San Diego, 179 Veterans with TRD received eight treatments of either IN esketamine ( n = 89) or IM ketamine ( n =...

MDMA-assisted Acceptance and Commitment Therapy for Posttraumatic Stress Disorder: Rationale for a New Approach

September 7, 2025 Mathew Herbert, Brian H. Blanco, Dimitri Perivoliotis et al. preprint

There is promise for 3,4-Methylenedioxymethamphetamine (MDMA)-assistedpsychotherapy as a highly effective and durable treatment for posttraumatic stress disorder(PTSD). However, the Food and Drug Administration rejected MDMA-assisted psychotherapy inits current form, expressing concerns about the lack of standardization and empirical basis ofpsychotherapy methods. This highlights the need to...

Ketamine-Occasioned Mystical Experience in Veterans with Treatment-Resistant Depression: A Retrospective Exploratory Analysis.

Psychedelic medicine (New Rochelle, N.Y.) August 1, 2025 Kush V. Bhatt, Jason Compton, Em Ellerman et al. 1 citation

Mystical experiences are powerful experiences that may have therapeutic value. Ketamine, a dissociative anesthetic, has shown potential to induce mystical experiences. However, little research has explored this phenomenon, particularly in treatment-resistant depression. We analyzed clinical data from 60 veterans with treatment-resistant depression receiving a total of 189 ketamine treatments....

Impact of Medical Comorbidities on Ketamine and Esketamine Treatment Effectiveness for Posttraumatic Stress Disorder and Depression: A Clinical Outcomes Analysis from the VA San Diego Healthcare System.

CNS Drugs June 1, 2025 Sijia Zhang, Houtan Afshar, Peter J Colvonen et al. 1 citation

Ketamine and esketamine are increasingly used to manage treatment-resistant depression and have also been shown to reduce symptoms of posttraumatic stress disorder (PTSD). Little is known about how common comorbidities in the veteran population, such as traumatic brain injury (TBI) or obstructive sleep apnea (OSA), may influence ketamine and esketamine treatment outcomes. In this retrospective...

Bringing MDMA-assisted therapy for PTSD to traditional healthcare systems: tending to set and setting.

Frontiers in Psychiatry 2025 Dimitri Perivoliotis, Kayla Knopp, Shannon Remick et al. 2 citations

Although effective evidence-based trauma-focused psychotherapies for posttraumatic stress disorder (PTSD) are available, a significant proportion of patients show a suboptimal response or do not complete them. MDMA-assisted therapy (MDMA-AT) for PTSD is a promising intervention currently being evaluated in numerous studies worldwide, including investigation for potential Food and Drug...

MDMA-assisted brief cognitive behavioral conjoint therapy for PTSD: Study protocol for a pilot study.

Contemporary clinical trials communications August 1, 2024 Leslie A. Morland, Dimitri Perivoliotis, Tamara R Wachsman et al. 4 citations

Posttraumatic Stress Disorder (PTSD) impacts both individual and relational functioning. Veteran couples are at increased risk of relationship distress due to military stressors such as deployment, family reintegration, and traumatic stress. Although both Cognitive-Behavioral Conjoint Therapy (CBCT) and its brief version (bCBCT) consistently have large effects on reducing PTSD symptoms, these...

A novel framework for ketamine-assisted couple therapy.

Frontiers in Psychiatry 2024 Chandra Khalifian, K Rashkovsky, E Mitchell et al. 8 citations

Intimate relationship distress is prevalent and is associated with poorer health, mental health, and mortality outcomes. Evidence-based couple therapies target cognitive, behavioral, and emotional processes that underlie relationship dysfunction. Increasing research and clinical evidence supports the efficacy of ketamine-assisted psychotherapy (KAP) for addressing clinical mental health...

Effects of intranasal (S)-ketamine on Veterans with co-morbid treatment-resistant depression and PTSD: A retrospective case series

EClinicalMedicine May 7, 2022 Hewa Artin, Sean Bentley, Eamonn Mehaffey et al. 35 citations

Summary: Background: (S)-ketamine is a glutamatergic drug with potent and rapid acting effects for the treatment of depression. Little is known about the effectiveness of intranasal (S)-ketamine for treating patients with comorbid depression and post-traumatic stress disorder (PTSD). Methods: We performed a retrospective case series analysis of clinical outcomes in 35 Veterans with co-morbid...