Chapter 15: Mood Disorders: Depression Review

Mood Disorders: Depression Review delves into the complex etiology of depressive syndromes, integrating the stress-diathesis model which combines genetic vulnerabilities with environmental stressors, and explores neurobiological factors involving dysregulation of key neurotransmitters like serotonin, norepinephrine, and dopamine. The text analyzes psychological theories such as Aaron Beck's cognitive triad—highlighting how automatic negative thoughts and cognitive distortions shape emotional experience—and Martin Seligman's theory of learned helplessness. A significant portion of the content is dedicated to the nursing assessment of depression, utilizing tools like the SIG E CAPS mnemonic to identify vegetative signs including sleep disturbances, anhedonia, anergia, and psychomotor changes, while emphasizing the critical importance of screening for suicide potential and lethality across different populations, including children, adolescents, and older adults. The chapter provides an in-depth review of evidence-based interventions, detailing the mechanisms, side effects, and nursing implications for various pharmacological classes including Selective Serotonin Reuptake Inhibitors (SSRIs), Tricyclic Antidepressants (TCAs), and Monoamine Oxidase Inhibitors (MAOIs), with specific warnings regarding life-threatening conditions like serotonin syndrome and hypertensive crisis. Furthermore, it outlines non-pharmacological treatments such as Cognitive Behavioral Therapy (CBT), interpersonal therapy, and brain stimulation therapies like Electroconvulsive Therapy (ECT), Transcranial Magnetic Stimulation (TMS), and Vagus Nerve Stimulation (VNS) for treatment-resistant cases. Finally, the content underscores the vital role of the nurse in establishing a therapeutic nurse-patient relationship through specific communication techniques, safety planning, and holistic care management to promote recovery and prevent relapse.