Chronic vs non-chronic depression in psychiatric inpatient care - Data from a large naturalistic multicenter trial

[Vagus Nerve Stimulation (VNS) in Depression]

Major depressive disorder is a common mental health disease with a chronic and treatment-resistant course in about one-third of patients. Invasive vagus nerve stimulation (VNS) as a long-term adjunctive treatment option has increasingly been used in the last years. VNS was CE-certified in the European Union for use in chronic and treatment-resistant depression in 2001. Method In this narrative literature review we provide an overview on VNS as a treatment option in patients with depression. We particularly focus on aspects with high clinical relevance. Results Indication to conduct VNS is determined after comprehensive evaluation of the patients' symptoms and psychiatric history. After education of patients and caregivers and obtaining informed consent, a pacemaker-like pulse generator is implanted in the left chest in a short surgical procedure. In the first weeks after implantation, the stimulation is turned on stepwise in an outpatient setting. The left vagal nerve is stimulated for 30 sec. every 5 minutes. Hoarseness during stimulation is the most frequent side-effect. There is a delay in the onset of antidepressant action of about 6-12 months. In a large registry, the cumulative response rate after 5 years was significantly higher (67.6%) in patients treated with VNS plus treatment-as-usual (TAU) than TAU alone (40.9%). Long-term benefits of VNS on quality of life, cognition, morbidity and mortality have been described previously. Conclusion VNS is a long-term safe treatment option in severely affected patients with depression with positive impact on depression severity, quality of life and cognitive function. Increase of monoaminergic transmission and anti-inflammatory effects of VNS are possible mechanisms of action.

Depression Socialization in Early Adolescent Friendships: The Role of Baseline Depressive Symptoms and Autonomous Functioning

There is mixed evidence for depression socialization, a process by which friends affect each other's level of depressive symptoms. The current study examined whether adolescents' baseline depressive symptoms and three dimensions of autonomous functioning (autonomy, peer resistance, and friend adaptation) make adolescents more or less sensitive to depression socialization, and how these dimensions of autonomous functioning were connected. In this preregistered, two-wave longitudinal study, participants completed questionnaires on depressive symptoms, autonomy, and peer resistance and participated in a task to assess friend adaptation. Participants were 416 Dutch adolescents (Mage = 11.60, 52.8% girls) across 230 close friend dyads. In contrast to expectations, results showed no significant depression socialization nor significant moderation. Furthermore, autonomy and peer resistance were related but distinct constructs, and not related to friend adaptation. These findings suggest that there is no depression socialization in early adolescence, regardless of level of autonomous functioning.

Follow-up outcomes of Mindfulness-Based Cognitive Therapy (MBCT) for patients with chronic, treatment-resistant depression

BACKGROUND

Mindfulness-based cognitive therapy (MBCT) is an evidence-based treatment for depression. The current study focused on the long-term effects of MBCT for chronically, treatment-resistant depressed patients during a 6-months follow-up period. Additionally, predictors of treatment outcomes were explored.

METHOD

The outcomes of MBCT on depressive symptoms, remission rates, quality of life, rumination, mindfulness skills and self-compassion were investigated in a cohort of chronically, treatment-resistant depressed outpatients (N = 106), who had taken part in an RCT comparing MBCT with treatment-as-usual (TAU). Measures were assessed pre-MBCT, post-MBCT, at 3-months follow-up, and at 6-months follow-up.

RESULTS

Results of linear mixed effect models and Bayesian repeated measures ANOVA's reveal that depressive symptoms, quality of life, rumination, mindfulness skills and self-compassion consolidated during follow-up. Remission rates even further increased over the course of follow-up. When controlling for symptoms at baseline, higher baseline levels of rumination predicted lower depressive symptoms and quality of life at 6-month follow-up. No other predictors (i.e. duration of current depressive episode, level of treatment-resistance, childhood trauma, mindfulness skills, self-compassion) were found.

LIMITATIONS

All participants received MBCT, therefore time or other non-specific effects might have influenced the results and replication in studies including a control condition is needed.

CONCLUSIONS

Results indicate that the clinical benefits of MBCT for chronically, treatment-resistant depressed patients persist up to 6 months after completing MBCT. Duration of the current episode, level of treatment-resistance, childhood trauma and baseline levels of mindfulness skills and self-compassion did not predict treatment outcome. When controlling for baseline depressive symptoms participants with high levels of rumination seem to benefit more; however more research is needed.

TRIAL REGISTRY

Dutch Trial Registry, number NTR4843.

[Inpatient psychotherapy of depressive disorders: options and challenges]

BACKGROUND

The psychotherapy of depressive disorders has become established as a central component of inpatient treatment in psychiatric and psychosomatic hospitals and furthermore constitutes an important component of the residency training in Germany; however, the number of studies examining the effectiveness and efficacy is limited.

METHODS

This narrative review summarizes the current state of research on inpatient psychotherapy for depressive disorders. The results of meta-analyses as well as practice-based observational studies from routine treatment in Germany, disorder-specific special programs, and side effects of inpatient psychotherapy are summarized.

RESULTS

The number of studies on the efficacy of inpatient psychotherapy of depressive disorders is overall low. The main finding of the largest recent meta-analysis indicates that psychotherapy in clinics and other facilities has a significant effect on depressive symptoms, with small to moderate effect sizes in randomized controlled studies. The effects are mostly maintained even after 9-15 months follow-up. An observational study from routine treatment with a very large sample size reported large pre-post and pre-follow-up effect sizes. It additionally revealed factors that appear to be difficult to change during inpatient psychotherapy, negatively affect treatment success and could be specifically addressed in future trials. Special programs, such as inpatient Interpersonal Psychotherapy (IPT) and the inpatient Cognitive Behavioral Analysis System of Psychotherapy (CBASP) indicate acceptance and efficacy/effectiveness in an initial randomized controlled (IPT) study and in observational (CBASP) studies. Side effects of inpatient psychotherapy were reported by 60-94% of patients with depressive disorders, whereby a perceived dependence on the therapist or the therapeutic setting was identified as a frequent side effect.

CONCLUSION

Overall, the results of the narrative review reveal that inpatient psychotherapy appears to be meaningful and effective for many patients with depressive disorders. Specific side effects, cost-effectiveness, and the question of differential indications (what works for whom?) should be further investigated.

Suicidal behaviors are associated with loneliness and decrease during inpatient CBASP treatment for persistent depressive disorder

Suicidal ideation and behavior (SIB) are common in persistent depressive disorder (PDD) and may be related to interpersonal dysfunction. While SIB has been extensively analyzed in other high-risk disorders (e.g., borderline personality disorder, BPD), data on interpersonal risk factors and effects of specific psychotherapy on SIB in PDD are limited. This study aimed at investigating loneliness versus social network size as interpersonal risk factors for SIB in PDD and assess effects of cognitive behavioral analysis system of psychotherapy (CBASP) on this domain. In a prospective naturalistic study, 64 PDD patients were assessed, who underwent a 10-weeks inpatient CBASP program. Our clinical comparison group consisted of 34 BPD patients, who underwent a 10-weeks inpatient dialectical behavioral therapy (DBT) program. SIB was measured with the Columbia-Suicide Severity Rating Scale (C-SSRS), loneliness and social network size with the UCLA Loneliness Scale (UCLA) and the Social Network Index (SNI). Twenty-six PDD patients (40.6% of the PDD sample) showed current SIB at baseline in comparison with 26 BPD patients (76.5% of the BPD sample). While in suicidal PDD patients, SIB was associated with perceived social isolation (UCLA), but not with reduced social network size (SNI), this association was not observed in suicidal BPD patients. In PDD, SIB significantly decreased during CBASP. In conclusion, SIB appears to be associated with interpersonal factors related to loneliness in PDD, but not in BPD. CBASP showed first positive evidence in reducing SIB in PDD, but our pilot data need replication studies.