Publications by authors named "Samuel Ridout"

Article Synopsis
  • This study evaluated the effectiveness of racemic ketamine intravenous treatments (KIT) for patients with treatment-resistant depression (TRD) compared to standard medication management (MM) in a health care system from 2018 to 2022.
  • Results showed that the KIT group had a greater likelihood of significant symptom improvement, with a 72% higher risk of achieving a more than 50% reduction in depression symptoms than the MM group.
  • The findings suggest that KIT might be a more effective option for treating TRD, but clinicians should consider factors like co-occurring mental health disorders and baseline symptom severity when predicting treatment responses.
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Article Synopsis
  • The study investigates the impact of app-enhanced treatment for eating disorders (ED) on clinical outcomes and health care usage in patients receiving outpatient and intensive care.
  • Results indicate that patients using the app experienced fewer emergency department visits and increased use of outpatient services, alongside notable weight gain among those who were underweight.
  • The findings suggest that integrating digital health tools into ED treatment may improve patient engagement and health results, highlighting the need for further research on long-term benefits and cost-effectiveness.
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Background: While the number of digital therapeutics (DTx) has proliferated, there is little real-world research on the characteristics of providers recommending DTx, their recommendation behaviors, or the characteristics of patients receiving recommendations in the clinical setting.

Objective: The aim of this study was to characterize the clinical and demographic characteristics of patients receiving DTx recommendations and describe provider characteristics and behaviors regarding DTx.

Methods: This retrospective cohort study used electronic health record data from a large, integrated health care delivery system.

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While collaborative care is known to improve depressive and anxiety symptoms in primary care, comparative effectiveness studies of virtual collaborative care versus virtual specialty psychiatry treatment in real world settings are lacking. This study examined patient depressive and anxiety symptoms over 6 months in collaborative care versus specialty psychiatry. This was an observational study with target trial emulation in a large, community-based, integrated health care system.

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Background And Hypothesis: Long-acting injectable (LAI) antipsychotics improve patient outcomes and are recommended by treatment guidelines for patients with limited medication adherence in schizophrenia spectrum, bipolar, and other psychotic disorders. Reports of LAI antipsychotic use in these disorders and if use aligns with treatment guidelines are lacking. This study aimed to report patient characteristics associated with LAI antipsychotic use in these disorders.

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Background Collaborative care is an evidence-based multidisciplinary model shown to improve patient depression and anxiety outcomes. Although there is robust literature showing the effectiveness of collaborative care on depression and anxiety symptoms, there is little published on outcomes of collaborative care implementation or the efficacy of collaborative care compared with psychiatric referrals. Reported here is a study protocol examining a novel depression and anxiety collaborative care program in a large, integrated health care system.

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Objective: The early COVID-19 pandemic resulted in great psychosocial disruption and stress, raising speculation that psychiatric disorders may worsen. This study aimed to identify patients vulnerable to worsening mental health during the COVID-19 pandemic.

Methods: This retrospective observational study used electronic health records from March 9 to May 31 in 2019 (n = 94,720) and 2020 (n = 94,589) in a large, community-based health care system.

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Depression comorbid with eating disorders is common and can worsen the severity of both disorders. Little is published regarding depression and eating disorders in male adolescents. This retrospective observational study compared eating disorder presentation and depression comorbidity between medically-hospitalized male and female adolescents.

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Introduction: Attention-deficit/hyperactivity disorder (ADHD) is one of the most common psychiatric conditions in youth. This disorder can persist into adulthood, with an estimated prevalence of 4.4% to 5.

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Objective: The Accreditation Council for Graduate Medical Education (ACGME) mandates resident quality improvement (QI) training to improve patient safety, cost control, and efficiency. Thus, understanding this topic is crucial for early career physicians. This manuscript describes an enhanced, experiential QI curriculum for psychiatry residents and its outcomes.

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Background: Stress is a key precipitant for many common diseases, but established biological markers to track stress and guide investigations into mechanisms linking stress and disease are lacking. Cross-sectional studies have identified correlations between stress and telomere attrition, but no large, longitudinal studies examining the impacts of chronic stress on telomere length exist. Residency training for physicians is a well-established stressful experience and can be used as a prospective stress model.

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This manuscript reviews recent evidence supporting the utility of telomeres and mitochondrial DNA copy number (mtDNAcn) in detecting the biological impacts of adverse childhood experiences (ACEs) and outlines mechanisms that may mediate the connection between early stress and poor physical and mental health. Critical to interrupting the health sequelae of ACEs such as abuse, neglect, and neighborhood disorder, is the discovery of biomarkers of risk and resilience. The molecular markers of chronic stress exposure, telomere length and mtDNAcn, represent critical biological links between ACEs and poor health outcomes.

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Purpose: This study investigates how the clinical practice guideline-recommended laboratory monitoring for refeeding syndrome impacts management and outcomes of adolescents with eating disorders hospitalized for acute medical stabilization and examines the value of laboratory monitoring (defined as the patient health outcomes achieved per dollar spent).

Methods: A retrospective chart review of medical admissions in a children's hospital between October 2010 and February 2014 was performed. Encounters were identified using International Classification of Diseases, Ninth Revision codes of eating disorders as primary or secondary diagnoses.

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Current treatment options for posttraumatic stress disorder (PTSD) offer modest benefits, underscoring the need for new treatments. Repetitive transcranial magnetic stimulation (rTMS) depolarizes neurons in a targeted brain region with magnetic fields typically pulsed at low (1 Hz) or high (10 Hz) frequency to relieve major depressive disorder (MDD). Prior work suggests an intermediate pulse frequency, 5 Hz, is also efficacious for treating comorbid depressive and anxiety symptoms.

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Background: Several recent studies have investigated the relationship between telomere length and depression with inconsistent results. This meta-analysis examined whether telomere length and depression are associated and explored factors that might affect this association.

Methods: Studies measuring telomere length in subjects with clinically significant unipolar depression were included.

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Background: Repetitive transcranial magnetic stimulation (rTMS) to left prefrontal cortex at 10Hz is the most commonly utilized protocol for major depressive disorder (MDD). Published data suggests that left sided 5Hz rTMS may be efficacious and well tolerated.

Objective: We analyzed outcomes in a naturalistic cohort of MDD patients who could not tolerate 10Hz rTMS and were routinely switched to 5Hz.

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Cellular aging plays a role in longevity and senescence, and has been implicated in medical and psychiatric conditions, including heart disease, cancer, major depression and posttraumatic stress disorder. Telomere shortening and mitochondrial dysfunction are thought to be central to the cellular aging process. The present study examined the association between mitochondrial DNA (mtDNA) copy number and telomere length in a sample of medically healthy adults.

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Telomeres are structures of tandem TTAGGG repeats that are found at the ends of chromosomes and preserve genomic DNA by serving as a disposable buffer to protect DNA termini during chromosome replication. In this process, the telomere itself shortens with each cell division and can consequently be thought of as a cellular 'clock', reflecting the age of a cell and the time until senescence. Telomere shortening and changes in the levels of telomerase, the enzyme that maintains telomeres, occur in the context of certain somatic diseases and in response to selected physical stressors.

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