Define depression classification etiology clinical manifestations nursing care of pt with depression devlop ncp of acute depression nursing management of depression

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Depression: A Complete Nursing Reference

1. DEFINITION

Depression (Major Depressive Disorder, MDD) is a mood disorder characterized by persistent low mood, loss of interest or pleasure (anhedonia), and a cluster of cognitive, neurovegetative, and behavioral symptoms that cause significant impairment in social, occupational, or other important areas of functioning, lasting at least 2 weeks, and not attributable to substances or another medical condition.

Kaplan & Sadock's Comprehensive Textbook of Psychiatry: "Major depressive disorder [is] a final common pathway of multifactorial interacting factors - physical and psychological."

2. CLASSIFICATION

A. DSM-5-TR Depressive Disorders

Type	Key Features
Major Depressive Disorder (MDD)	>= 5 symptoms for >= 2 weeks; at least one is depressed mood or anhedonia
Persistent Depressive Disorder (Dysthymia)	Depressed/irritable mood for most of the day, more days than not, for >= 2 years (adults) or >= 1 year (children/adolescents)
Premenstrual Dysphoric Disorder	Mood symptoms in the luteal phase, remit after menstruation
Substance/Medication-Induced Depressive Disorder	Due to direct physiological effects of a substance
Depressive Disorder Due to Another Medical Condition	e.g., hypothyroidism, stroke, Parkinson's disease
Disruptive Mood Dysregulation Disorder	Chronic, severe irritability in children <= 18 years
Other Specified / Unspecified Depressive Disorder	Symptoms causing distress but not meeting full criteria

B. MDD Subtypes / Specifiers

Specifier	Description
With Psychotic Features	Delusions or hallucinations; mood-congruent or mood-incongruent; indicates severe disease and poor prognosis
With Melancholic Features	Severe anhedonia, early morning awakening, psychomotor retardation, profound guilt, weight loss ("endogenous depression")
With Atypical Features	Mood reactivity, hypersomnia, leaden paralysis, hyperphagia, sensitivity to rejection
With Anxious Distress	Prominent anxiety symptoms alongside depression
With Mixed Features	Concurrent manic/hypomanic symptoms
With Peripartum Onset	During pregnancy or within 4 weeks postpartum
With Seasonal Pattern	Recurrence in winter; remission in spring/summer
With Catatonic Features	Stupor, waxy flexibility, mutism, posturing

C. Severity Specifiers

Mild: Few symptoms beyond minimum, minimal functional impairment
Moderate: Intermediate
Severe: Many excess symptoms; marked functional impairment
In partial/full remission

Source: Kaplan & Sadock's Comprehensive Textbook of Psychiatry; Kaplan and Sadock's Synopsis of Psychiatry

3. ETIOLOGY

Depression is multifactorial. The major etiological categories are:

A. Biological Factors

1. Neurotransmitter Dysregulation (Monoamine Hypothesis)

Deficiency of serotonin (5-HT), norepinephrine (NE), and dopamine (DA) is the classical explanation
Serotonin transporter gene (5-HTTLPR) polymorphisms are associated with antidepressant response and side effects
Long allele variants show better SSRI outcomes than short allele homozygotes

2. Neuroendocrine Abnormalities

Hypothalamic-pituitary-adrenal (HPA) axis hyperactivity - elevated cortisol levels
Hypothyroidism (thyroid hormone deficiency) commonly co-occurs with or mimics depression
Decreased growth hormone (GH) secretion

3. Neuroplasticity and Neurotrophic Factors

Decreased BDNF (Brain-Derived Neurotrophic Factor) in hippocampus and prefrontal cortex
Hippocampal volume loss has been documented in recurrent depression
Antidepressants restore BDNF levels

4. Structural and Functional Brain Changes

Reduced activity in prefrontal cortex, cingulate cortex
Amygdala hyperreactivity to negative stimuli
Sleep architecture changes (decreased REM latency, increased REM density)

5. Genetic Factors

Heritability ~40% for MDD
First-degree relatives have 2-3x higher risk
Higher concordance in monozygotic (50%) vs. dizygotic (25%) twins

B. Psychological Factors

Theory	Description
Beck's Cognitive Triad	Negative views of self, world, and future
Learned Helplessness (Seligman)	Belief that one lacks control over life events
Psychodynamic	Depression as anger turned inward; unresolved grief; ego loss
Life events	Major stressors (bereavement, divorce, job loss) trigger episodes in vulnerable individuals
Early adversity	Childhood trauma, abuse, neglect increase lifetime risk

C. Social Factors

Social isolation, poor social support
Low socioeconomic status, unemployment
Marital conflict, domestic violence
Chronic illness in self or caregiver
Grief and loss

D. Medical / Pharmacological Causes

Medical: Hypothyroidism, Cushing's disease, stroke, Parkinson's disease, dementia (pseudodementia), cancer, chronic pain, diabetes
Drugs: Corticosteroids, beta-blockers, reserpine, oral contraceptives, antiretrovirals, levodopa, interferon

E. Risk Factors Summary

Female sex (2:1 female:male ratio)
Previous depressive episode (strongest predictor)
Family history of depression
Age of onset: bimodal - mid-20s and late life
Comorbid anxiety disorders, substance use, personality disorders

4. CLINICAL MANIFESTATIONS

A. Core Diagnostic Symptoms (DSM-5 - SIG E CAPS Mnemonic)

Letter	Symptom
S	Sleep - insomnia or hypersomnia
I	Interest - loss (anhedonia)
G	Guilt - excessive or inappropriate
E	Energy - fatigue, decreased energy
C	Concentration - difficulty thinking or deciding
A	Appetite - decreased or increased (weight change >= 5% in 1 month)
P	Psychomotor - agitation or retardation
S	Suicidal ideation - recurrent thoughts of death or suicide

Plus depressed mood as the 9th criterion. Diagnosis requires >= 5 of 9 symptoms for >= 2 weeks; at least one must be depressed mood or anhedonia.

B. Manifestations by Domain

Mood/Affective:

Persistent sadness, emptiness, hopelessness
Dysphoria, tearfulness
Irritability (especially children and adolescents)
Emotional numbness or feeling "nothing"

Cognitive:

Poor concentration, impaired memory
Negative self-evaluation, excessive guilt, worthlessness
Indecisiveness
Suicidal ideation, rumination about death
Pseudodementia (cognitive impairment mimicking dementia, especially in elderly)

Behavioral:

Social withdrawal, isolation
Decreased participation in activities
Neglect of personal hygiene and appearance
In adolescents: antisocial behavior, substance use, school failure

Somatic/Vegetative:

Fatigue disproportionate to activity
Sleep disturbances (early morning awakening is classic for melancholia)
Appetite and weight changes
Psychomotor retardation (slowed speech, movement, thinking) or agitation
Loss of libido

Psychotic Symptoms (Severe MDD):

Mood-congruent hallucinations: single voice with derogatory or suicidal content
Mood-congruent delusions: guilt, physical disease, nihilism, deserved punishment, personal inadequacy
Mood-incongruent features suggest comorbid psychotic disorder

5. NURSING CARE OF A PATIENT WITH DEPRESSION

A. Nursing Assessment

1. Safety Assessment (Priority)

Assess for suicidal ideation: ask directly ("Are you having thoughts of harming yourself?")
Evaluate: plan, means, intent, and protective factors
Use structured tools: Columbia Suicide Severity Rating Scale (C-SSRS), SAD PERSONS scale

2. Mental Status Examination

Appearance: disheveled, poor hygiene, psychomotor retardation
Mood: depressed, sad, irritable
Affect: blunted, flat, constricted
Speech: soft, slow, minimal
Thought content: worthlessness, guilt, helplessness, hopelessness, suicidal ideation
Cognition: impaired concentration, poor short-term memory
Insight and judgment: variable

3. Functional Assessment

Activities of daily living (ADLs): hygiene, nutrition, sleep, mobility
Social and occupational functioning
Support systems and living situation
Substance use history

4. Physical Assessment

Vital signs (autonomic signs in severe depression)
Weight and nutritional status
Medical comorbidities (thyroid disease, diabetes, chronic pain)
Medication review

6. NURSING CARE PLAN (NCP) FOR ACUTE DEPRESSION

Nursing Diagnosis 1: Risk for Suicide

Related to: hopelessness, feelings of worthlessness, severe depression

Defining Characteristics (As evidenced by): verbalized suicidal ideation, giving away belongings, previous attempts, direct/indirect statements about death, hopelessness

Goal / Expected Outcome: Patient will remain free from self-harm; patient will verbalize intent to inform staff if suicidal thoughts increase; patient will identify at least 2 reasons to live before discharge.

Nursing Interventions	Rationale
Perform suicide risk assessment every shift using validated tool (C-SSRS)	Provides ongoing, structured monitoring; risk is dynamic
Maintain a safe environment: remove sharps, belts, ligature risks, inspect room; implement 1:1 observation or arm's-length supervision if high risk	Direct supervision prevents access to means of self-harm
Establish therapeutic relationship; communicate with empathy and non-judgment	Trust encourages the patient to disclose escalating ideation
Develop a safety/no-harm contract collaboratively	Increases patient's sense of agency and commitment
Ensure medications are given in crushed form or monitored for cheeking/hoarding	Prevents stockpiling for overdose
Remove or limit access to toxic substances and medications	Environmental safety measure
Involve family/support persons in safety planning with patient consent	Social support is protective against suicide completion

Evaluation: Patient remains safe; reports suicidal ideation to nursing staff proactively.

Nursing Diagnosis 2: Hopelessness

Related to: prolonged activity restriction, failing or deteriorating physiological condition, long-term stress, loss of belief in values

Defining Characteristics: verbal cues ("nothing matters," "there's no hope"), passive, decreased affect, decreased appetite, lack of initiative

Goal: Patient will verbalize at least one positive expectation for the future within 48 hours; will engage in one goal-directed activity per shift.

Nursing Interventions	Rationale
Sit with patient; actively listen without offering false reassurance	Validating feelings builds trust; clichés are counterproductive
Help identify realistic, achievable short-term goals	Small wins rebuild sense of mastery and hope
Challenge cognitive distortions using cognitive restructuring techniques	Corrects automatic negative thoughts
Involve patient in treatment planning decisions	Restores sense of control
Encourage journaling thoughts and mood tracking	Externalizes thoughts; aids insight
Provide psychoeducation about depression as a treatable illness	Reduces stigma and reinforces that recovery is possible

Nursing Diagnosis 3: Disturbed Sleep Pattern

Related to: depressive rumination, altered serotonin levels, anxiety

Defining Characteristics: reports difficulty falling or staying asleep; early morning awakening; daytime fatigue; irritability; dark circles; verbalized non-restorative sleep

Goal: Patient will sleep 6-8 uninterrupted hours per night within 1 week.

Nursing Interventions	Rationale
Establish consistent sleep-wake schedule	Regulates circadian rhythm
Limit caffeine and stimulating activities before bedtime	Reduces arousal
Promote sleep hygiene: quiet environment, dim lights, comfortable temperature	Removes environmental barriers to sleep
Monitor sleep pattern: document hours and quality each shift	Tracks progress and treatment response
Administer sleep medications as prescribed (e.g., mirtazapine, trazodone)	Pharmacological augmentation when non-pharmacologic measures insufficient
Minimize nighttime interruptions (cluster care)	Protects sleep continuity

Nursing Diagnosis 4: Imbalanced Nutrition: Less Than Body Requirements

Related to: loss of appetite (anhedonia), psychomotor retardation, lack of interest in eating

Defining Characteristics: weight loss >5% of body weight, inadequate food intake, states "food has no taste," poor skin turgor

Goal: Patient will maintain/regain weight; will consume at least 75% of each meal during hospital stay.

Nursing Interventions	Rationale
Weigh patient daily at same time, in same clothing	Accurate weight trending
Offer small, frequent, high-calorie, nutritious meals	Reduces demand when appetite poor
Sit with patient during meals; provide companionable presence	Social eating improves intake in depression
Identify preferred foods; involve dietitian	Preferred foods more likely to be eaten
Document food/fluid intake accurately	Detects deterioration early
Monitor electrolytes, blood glucose, albumin	Nutritional status indicators

Nursing Diagnosis 5: Social Isolation

Related to: withdrawn behavior, low self-esteem, altered thought processes

Defining Characteristics: absence from unit activities, refuses visitors, stays in room, flat affect, avoids eye contact

Goal: Patient will attend at least one group activity per day; will initiate at least one interaction with staff or peers per shift by day 3.

Nursing Interventions	Rationale
Spend scheduled 15-30 min with patient each shift (therapeutic use of self)	Consistent presence reduces isolation without overwhelming
Gradually introduce group activities (start with low-demand groups)	Gradual exposure prevents overwhelm; builds confidence
Encourage family visits; facilitate supportive family interactions	Social support is protective and aids recovery
Avoid pressuring or forcing interaction	Pressure increases anxiety and resistance
Provide positive reinforcement when patient attempts socialization	Reinforces adaptive behavior

Nursing Diagnosis 6: Self-Care Deficit (Bathing, Grooming, Hygiene)

Related to: psychomotor retardation, fatigue, hopelessness, anhedonia

Goal: Patient will perform ADLs independently or with minimal assistance by day 5.

Nursing Interventions	Rationale
Assist with hygiene, grooming, and dressing as needed without doing everything for the patient	Maintains patient dignity while promoting independence
Establish a daily structured routine for ADLs	Structure compensates for lack of motivation
Use motivational interviewing: "Would you be willing to try washing your face today?"	Non-coercive approach that respects autonomy
Offer positive, genuine reinforcement for self-care attempts	Positive feedback encourages repetition

7. NURSING MANAGEMENT OF DEPRESSION

A. Pharmacological Management (Nurse's Role)

First-Line Antidepressants:

Drug Class	Examples	Nurse's Role
SSRIs (Selective Serotonin Reuptake Inhibitors)	Fluoxetine, Sertraline, Escitalopram, Paroxetine	Monitor for GI side effects (nausea, diarrhea), sexual dysfunction, insomnia; watch for serotonin syndrome with combinations; note 2-4 week onset of effect
SNRIs	Venlafaxine, Duloxetine	Monitor BP (may raise it); GI effects; discontinuation syndrome if missed doses
TCAs (Tricyclic Antidepressants)	Amitriptyline, Imipramine	Anticholinergic effects (dry mouth, constipation, urinary retention, blurred vision); cardiac arrhythmias - ECG monitoring; lethal in overdose - restrict access
MAOIs	Phenelzine, Tranylcypromine	Tyramine-free diet required (no aged cheese, wine, cured meats) - risk of hypertensive crisis; numerous drug interactions
Atypicals	Mirtazapine (sedation/appetite gain; useful for insomnia/poor appetite), Bupropion (lowers seizure threshold), Trazodone (sleep)	Class-specific monitoring

Key Nursing Points for All Antidepressants:

Lag period: Inform patient that full therapeutic effect takes 2-6 weeks; adherence is essential
Suicide risk paradox: In the first 1-2 weeks, energy may improve before mood lifts - risk of acting on suicidal ideation increases; monitor closely especially in younger patients
Black box warning: FDA mandates monitoring for increased suicidality in patients under 25 on antidepressants
Never abruptly stop: Tapering required to avoid discontinuation syndrome
Drug-drug interactions: Screen all medications especially in elderly patients

B. Electroconvulsive Therapy (ECT)

Indications: Severe MDD unresponsive to medications, psychotic depression, catatonic depression, severe suicidal ideation requiring rapid response, pregnancy (when medication is contraindicated)

Nursing Care for ECT:

Pre-procedure: NPO for 6-8 hours, consent obtained, baseline vitals, remove dentures/jewelry, void bladder, short-acting anesthetic and muscle relaxant administered by anesthesia team
During: Maintain airway, monitor vitals, seizure duration monitored (EEG)
Post-procedure: Recovery position, monitor airway/breathing/consciousness, reorientation, document response
Educate patient/family: Temporary memory impairment and headache are common; memory typically improves after course completion

C. Psychotherapeutic Interventions (Nurse-Facilitated)

Therapy	Application
Cognitive Behavioral Therapy (CBT)	Identify and reframe negative automatic thoughts; most evidence-based psychotherapy for depression
Behavioral Activation	Engage in scheduled pleasant activities; counteracts withdrawal
Interpersonal Therapy (IPT)	Addresses grief, role transitions, interpersonal conflict
Problem-Solving Therapy	Structured approach to life stressors
Mindfulness-Based Cognitive Therapy (MBCT)	Prevents relapse in recurrent depression

D. Milieu Therapy (Inpatient)

Provide a structured, predictable daily schedule
Create a safe, calm, non-threatening environment
Facilitate group activities: occupational therapy, recreational therapy, music therapy, art therapy
Encourage peer interactions within therapeutic community
Hold daily community meetings; include patient in unit decisions
Therapeutic communication: Use open-ended questions, active listening, empathic responses; avoid clichés ("cheer up," "others have it worse")

E. Psychoeducation

Teach patient and family:

Depression is a medical illness, not a character weakness
Medication must be taken daily even when feeling well
Do not discontinue medication without consulting prescriber
Warning signs of relapse: sleep disruption, social withdrawal, anhedonia returning
Emergency resources: crisis hotlines (988 in USA), emergency department
Importance of follow-up appointments
Lifestyle modifications: regular exercise (shown to be as effective as antidepressants in mild-moderate depression), sleep hygiene, nutrition, avoiding alcohol and substance use

F. Discharge Planning

Ensure outpatient follow-up appointment is made before discharge
Confirm patient has supply of medications and understands dosing
Safety plan completed and reviewed with patient and family
Community resources identified: support groups, counseling, crisis lines
Identify responsible adult in home environment if risk of relapse or self-harm
Psychoeducation materials provided in patient's language

8. PROGNOSIS

Untreated episode lasts 6-13 months; treated episode approximately 3 months
50% have recurrence within 5 years of hospitalization
With each successive episode, frequency increases and interval between episodes shortens
Approximately 25% of patients develop chronic or only partially remitting course
Good prognostic indicators: mild severity, no psychotic features, good social support, short episode duration, no comorbid substance use
Poor prognostic indicators: psychotic features, early onset, multiple prior episodes, comorbid anxiety or substance use, poor medication adherence

References:

Kaplan & Sadock's Comprehensive Textbook of Psychiatry (Kaplan & Sadock) - Sections 13.3 Mood Disorders Classification, Chapter on SSRIs

Kaplan and Sadock's Synopsis of Psychiatry - Chapter 7 (Major Depressive Disorder), Chapter 29 (Palliative/Consultation Psychiatry)

DSM-5-TR Diagnostic Criteria for Major Depressive Disorder

ICD-10 / ICD-11 criteria for Major Depressive Episode / Disorder

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