Emotional and interpersonal mechanisms in community SSRI treatment of social anxiety disorder.

BACKGROUND: Affective and interpersonal behavioural patterns characteristic of social anxiety disorder show improvement during treatment with serotonin agonists (e.g., selective serotonin reuptake inhibitors), commonly used in the treatment of social anxiety disorder. The present study sought to establish whether, during community psychopharmacological treatment of social anxiety disorder, changes in positive or negative affect and agreeable or quarrelsome behaviour mediate improvement in social anxiety symptom severity or follow from it. METHODS: Adults diagnosed with social anxiety disorder (n = 48) recorded their interpersonal behaviour and affect naturalistically in an event-contingent recording procedure for 1-week periods before and during the first 4 months of treatment with paroxetine. Participants and treating psychiatrists assessed the severity of social anxiety symptoms monthly. A multivariate latent change score framework examined temporally lagged associations of change in affect and interpersonal behaviour with change in social anxiety symptom severity. RESULTS: Elevated agreeable behaviour and positive affect predicted greater subsequent reduction in social anxiety symptom severity over the following month of treatment. Elevated negative affect, but not quarrelsome behaviour, predicted less subsequent reduction in symptom severity. LIMITATIONS: Limitations included limited assessment of extreme behaviour (e.g., violence) that may have precluded examining the efficacy of paroxetine because of the lack of a placebo control group. CONCLUSION: The present study suggests that interpersonal behaviour and affect may be putative mechanisms of action for serotonergic treatment of social anxiety disorder. Prosocial behaviour and positive affect increase during serotonergic treatment of social anxiety disorder. Specifically, modulating agreeable behaviour, positive affect and negative affect in individuals' daily lives may partially explain and refine clinical intervention.

Affect, interpersonal behaviour and interpersonal perception during open-label, uncontrolled paroxetine treatment of people with social anxiety disorder: a pilot study

Background: Laboratory-based research with community samples has suggested changes in affective, behavioural and cognitive processes as possible explanations for the effects of serotonergic medications. Examining the effects of serotonergic medications using an ecological momentary measure (such as event-contingent recording) in the daily lives of people with social anxiety disorder would contribute to establishing the effects of these medications on affect, behaviour and one form of cognition: perception of others' behaviour. Methods: The present study assessed changes in affect, interpersonal behaviour and perception of others' behaviour in adults with social anxiety disorder using ecological momentary assessment at baseline and over 4 months of a single-arm, uncontrolled, open-label trial of treatment with the selective serotonin reuptake inhibitor paroxetine. Results: Anxiety and concurrent depressive symptoms decreased. Participants also reported increased positive and decreased negative affect; increased agreeable and decreased quarrelsome behaviour; increased dominant and decreased submissive behaviour; and increased perception that others behaved agreeably toward them. Moreover, participants demonstrated reduced intraindividual variability in affect, interpersonal behaviour and perception of others' behaviour. Limitations: Limitations included the lack of a placebo group, the inability to identify the temporal order of changes and the restricted assessment of extreme behaviour. Conclusion: The results of the present study demonstrate changes during pharmacotherapy in the manifestation of affect, interpersonal behaviour and interpersonal perception in the daily lives of people with social anxiety disorder. Given the importance of interpersonal processes to social anxiety disorder, these results may guide future research seeking to clarify mechanisms of action for serotonergic medications.

Understanding the role of adjunctive nonpharmacological therapies in management of the multiple pathways to depression.

Major depressive disorder (MDD) is a common disorder with a lifetime prevalence of 16.2% and the fourth highest cause of disability globally. It is hypothesized to be a syndromatic manifestation of multiple pathological processes leading to similar clinical manifestation. MDD is associated with at least three categories of peripheral hormone-type factors including neurotrophic factors, proinflammatory cytokines, and processes that impair regulation of the hypothalamic-pituitary-adrenocortical axis. Neuroimaging studies have identified functional abnormalities including subcortical systems associated with reward and emotion processing, medial prefrontal and anterior cingulate cortical regions and the lateral prefrontal cortical systems involved in cognitive control and voluntary emotion regulation. Studies investigating the effects of psychotherapy and pharmacotherapy on functional brain measures show normalization of brain function with return to euthymia. Nevertheless, approximately 50% of patients with MDD will not respond sufficiently and 60 to 70% will not achieve full remission with first-line pharmacotherapy, therefore clinicians strive to improve patient responses through the use of adjunct therapies. This review discusses recent research in the various biological processes associated with MDD as well as recent data in support of the use of adjunctive non-pharmacological therapies including psychotherapy, bibliotherapy, Internet therapy, "natural" or herbal approaches, exercise therapy, and somatic therapies.

Canadian clinical practice guidelines for the management of anxiety, posttraumatic stress and obsessive-compulsive disorders.

BACKGROUND: Anxiety and related disorders are among the most common mental disorders, with lifetime prevalence reportedly as high as 31%. Unfortunately, anxiety disorders are under-diagnosed and under-treated. METHODS: These guidelines were developed by Canadian experts in anxiety and related disorders through a consensus process. Data on the epidemiology, diagnosis, and treatment (psychological and pharmacological) were obtained through MEDLINE, PsycINFO, and manual searches (1980-2012). Treatment strategies were rated on strength of evidence, and a clinical recommendation for each intervention was made, based on global impression of efficacy, effectiveness, and side effects, using a modified version of the periodic health examination guidelines. RESULTS: These guidelines are presented in 10 sections, including an introduction, principles of diagnosis and management, six sections (Sections 3 through 8) on the specific anxiety-related disorders (panic disorder, agoraphobia, specific phobia, social anxiety disorder, generalized anxiety disorder, obsessive-compulsive disorder, and posttraumatic stress disorder), and two additional sections on special populations (children/adolescents, pregnant/lactating women, and the elderly) and clinical issues in patients with comorbid conditions. CONCLUSIONS: Anxiety and related disorders are very common in clinical practice, and frequently comorbid with other psychiatric and medical conditions. Optimal management requires a good understanding of the efficacy and side effect profiles of pharmacological and psychological treatments.

Mental Health Service Utilization among Students and Staff in 18 Months Following Dawson College Shooting.

OBJECTIVES: The aim of this study was to investigate service utilization by students and staff in the 18 months following the September 13, 2006, shooting at Dawson College, Montreal, as well as the determinants of this utilization within the context of Canada's publicly managed healthcare system. METHODS: A sample of 948 from among the college's 10,091 students and staff agreed to complete an adapted computer or web-based standardized questionnaire drawn from the Statistics Canada 2002 Canadian Community Health Survey cycle 1.2 on mental health and well-being. RESULTS: In the 18 months following the shooting, there was a greater incidence and prevalence not only of PTSD, but also of other anxiety disorders, depression, and substance abuse. Staff and students were as likely to consult a health professional when presenting a mental or substance use disorder, with females more likely to do so than males. Results also indicated that there was relatively high internet use for mental health reasons by students and staff (14% overall). CONCLUSIONS: Following a major crisis event causing potential mass trauma, even in a society characterized by easy access to public, school and health services and when the population involved is generally well educated, the acceptability of consulting health professionals for mental health or substance use problems represents a barrier. However, safe internet access is one way male and female students and staff can access information and support and it may be useful to further exploit the possibilities afforded by web-based interviews in anonymous environments.

Evaluation of the Dawson College Shooting Psychological Intervention: Moving Toward a Multimodal Extensive Plan.

In 2006, following the shooting at Dawson College, the authorities implemented an intervention plan. This provided an opportunity to analyze the responses to services offered, and afforded a learning opportunity, which led to the proposal of an extensive multimodal short- and long-term psychological plan for future needs. Both quantitative and qualitative data were gathered 18 months after the event, involving the participation of 948 students and staff. Mental health problems and the perception of services offered after the shooting were investigated, using standardized measures. Second, focus groups and individual interviews were conducted among a subgroup of participants (support team members; teachers and employees; students and parents) and permitted to gather data on services received and services required. Individual report of events, the extent of psychological impact and services offered and received were analyzed in terms of the following dimensions: intervention philosophy, training, ongoing offer of services and finally, detection and outreach. A significant incidence of disorders and a high rate of exacerbation of preexisting mental disorders were observed within the 18 months following the shooting. Postimmediate and short-term intervention appeared adequate, but the long-term collective vision toward community support and availability of mental health services were lacking. Lessons learned from this evaluation and other school shootings suggest that preparedness and long-term community responses are often overlooked. A multimodal extensive plan is proposed based on a theoretical model from which interventions strategies could be drawn.

[Alcohol and drug consumption in students exposed to the Dawson College shooting: a gender-based analysis]. / La consommation d'alcool et de drogue des étudiants suite à la fusillade de Dawson : une analyse différenciée selon le sexe.

OBJECTIVE: To study alcohol and drug addiction incidence in students exposed to the Dawson College shooting within the 18 months following the event, to identify the precursors of a psychoactive substance addiction development while considering the severity of event exposure, and to examine whether alcohol use, 18 months after the event, is related to any of the various posttraumatic stress disorder (PTSD) symptom groups. METHOD: The population of this study was comprised of all the Dawson College students at the time of the event. Analyses were conducted with 854 students enrolled in the college at the time of the shooting. RESULTS: Five per cent of women and 7% of men showed, for the first time in their life, a problem with substance addiction following the shooting. In men, young age, lifetime suicidal ideation, and having seen the killer during the shooting are the main precursors of incident accident cases. None of the studied precursors were significant in women. Men and women were also different in terms of PTSD symptoms predicting alcohol use 18 months after the shooting. CONCLUSION: The study highlights the importance of considering a person's sex when studying their psychoactive substance use following a trauma.

Paroxetine versus placebo and other agents for depressive disorders: a systematic review and meta-analysis.

OBJECTIVE: To compare paroxetine with placebo and other antidepressants across multiple efficacy and tolerability outcomes. DATA SOURCES: Searches were conducted in MEDLINE (1966-2004), EMBASE (1980-2004), CINAHL (1982-2004), all Evidence-Based Medicine Reviews (1991-2004), HealthSTAR (1975-2004), BIOSIS (1980-2004), and PsycINFO (1840-2004). Medical Subject Headings (MeSH) included "paroxetine" OR "Paxil" exploded. The searches were not restricted by language, publication type, or study design. STUDY SELECTION: A study report was included if it described a randomized trial of paroxetine versus placebo or other antidepressants for patients with depressive disorders. Records were screened independently by 2 reviewers under the supervision of another reviewer. DATA EXTRACTION: Three investigators abstracted data, including study design, trial characteristics, and psychiatric assessment tools, using a prespecified form. Two investigators assessed quality of reporting using Jadad's scale. DATA SYNTHESIS: We included 62 unique randomized controlled trials. Paroxetine yielded consistently and significantly better remission (rate difference [RD]: 10% [95% CI = 6 to 14]), clinical response (RD: 17% [95% CI = 7 to 27]), and symptom reduction (effect size: 0.2 [95% CI = 0.1 to 0.3]) than placebo. Such consistency in the evidence base was not observed between paroxetine and other antidepressants. Pairwise comparisons of paroxetine and venlafaxine, mirtazapine, mianserin, or fluoxetine yielded inconsistent results across efficacy outcomes. Controlled-release paroxetine was the only antidepressant with significantly fewer dropouts due to adverse events than immediate-release paroxetine (RD: 5% [95% CI = 0.1 to 11]). CONCLUSIONS: There were no significant and valid differences between paroxetine and other antidepressants to suggest that multiple modes of action improve clinical outcomes.

Long-term goals in the management of acute and chronic anxiety disorders.

Many anxiety disorders are not treated to remission (symptom-free state); however, this should be the minimum goal of therapy. Antidepressant therapies have shown significant beneficial effects in the management of anxiety disorders, with some variability in results in specific disorders. In social anxiety disorder, selective serotonin reuptake inhibitors and venlafaxine extended release (XR) have demonstrated efficacy, with response rates varying between 40% and 68%. Monoamine oxidase inhibitors and cognitive-behavioural therapies are also effective. In patients with generalized anxiety disorder, benzodiazepines, paroxetine, and venlafaxine XR have demonstrated remission rates that are 15% to 25% higher than placebo. In patients with posttraumatic stress disorder, about 60% to 70% of patients experienced a response with antidepressant therapy, compared with about 40% on placebo, while remission rates in one study were 30% with venlafaxine, 24% with sertraline, and 20% with placebo. In patients with obsessive-compulsive disorder, a 25% to 35% improvement in symptom scores was reported in 20% to 65% of patients. In the management of panic disorder, paroxetine and venlafaxine XR doubled the percentage of patients who were panic-free, compared with placebo. Ongoing antidepressant therapy further improved remission rates, and many patients with anxiety disorders required extended treatment trials before experiencing benefit. In most clinical trials, some benefits were seen within 3 to 4 weeks but continued to accrue throughout the 3- to 6-month duration of the trial. In the acute phase, patients with anxiety disorders should be treated aggressively with antidepressants for extended periods and may require long-term therapy to maintain benefits. Cognitive-behavioural therapy is another mainstay in the treatment of all anxiety disorders; exposure to feared situations is necessary to move beyond phobic avoidance and functional impairment to full recovery, the ultimate goal of therapy.