Depression, Dementia, Delirium Flashcards
What is the prevalence of Major Depressive Disorder (MDD)?
- Lifetime incidence: 20% in women, 12% in men
- Depression is the 4th MC presenting complaint in the primary care setting
- Affects 5-10% of patients in primary care setting
Give the DSM-V criteria for MDD
At least 5 of the following, during the same 2 week period, representing a change from previous functioning:
- Fatigue
- Depressed mood
- Decreased interest or pleasure
- Feelings of worthlessness or guilt
- Decreased concentration/indecisiveness
- Weight gain or loss
- Psychomotor agitation or retardation
- Suicidal ideation
**must include depressed mood or loss of interest or pleasure
Give the symptom DSM-V criteria for MDD
- Must cause clinically significant distress or impair functioning
- Are NOT:
- -D/t the direct physiologic effects of a substance or general medical condition
- -Better accounted for by bereavement
List the risk factors for MDD
- Older age
- Alzheimer disease (40% develop MDD)19
- Recent childbirth
- Recent stressful events
- Personal or family history of depression
- Chronic disease (25% develop MDD)
What factors increase MDD in the elderly?
- Being female
- Being single, unmarried, divorced, or widowed
- Lack of a supportive social network
- Stressful life events
- Damage to body image (amputation, heart attack, cancer…)
What is the course of MDD?
- Relapsing, remitting illness in most patients
- 40% recurrence in the two years following a first episode
- After two episodes, 75% recurrence over the next five years
Etiology of MDD in the elderly
- Affects about half of nursing home patients
- MCC of weight loss in elderly is depression
- *Somatic complaints**
- May present with a general decline in functioning or confusion
What is the classic presentation of MDD in the elderly?
- Vague complaints of pain
- Deny depression
- Minimize severity of symptoms
- Hesitant to admit illness
What are the 5 questions used for the geriatric depression scale?
- Are you basically satisfied with your life?
- Do you often get bored?
- Do you feel helpless?
- Do you prefer to stay at home rather than going out and doing new things?
- Do you feel pretty worthless the way you are now?
*a score > 2 suggests diagnosis of depression
What is BDI-II?
- Beck Depression Inventory—2nd edition
- 21 item questionnaire
- Provides an objective measure to evaluate depression
List the risk factors for suicide (many)
- Male sex
- Age older than 55
- Comorbid physical illness
- Social isolation (divorced, widowed…)
- Depression, especially with severe melancholic or delusional symptoms
- Substance abuse or dependence
- Family history of suicide and/or MDD
- Command hallucinations
- Access to firearms
- White race
- Chronic and inadequately treated pain
- Terminal illness
List the diff dx for MDD
- Alzheimer disease
- Endocrinologic disorders (addison, cushing, hyper/hypothyroidism, prolactinomas, hyperparathyroidism)
- Neoplastic lesions of CNS (can cause psychiatric sxs prior to any focal neurologic signs)
- Inflammatory conditions (SLE)
- Sleep apnea
- Infectious processes (Lyme disease, syphilis, HIV encephalopathy)
- Substance use, abuse or dependence
- Other psychological disorders: Seasonal affective disorder (SAD), Dysthymia, Anxiety disorders, Eating disorders, Personality disorders
List the meds that can cause depression
- Beta-blockers
- CCB
- Steroids
- Drugs that affect sex hormones (estrogen, progesterone, testosterone, GnRH antagonists…)
- Ranitidine, cimetidine
- Sedatives
- Muscle relaxants
- Appetite suppressants
- Chemotherapy agents
What events can cause “grief” from your diff dx? What is tx of grief?
- Death, divorce, abrupt serious illness, job loss…
- If the impact of the event on the patient’s functional status is in keeping with expected cultural norms, it is described as normal bereavement
- Consider psychotherapy + medication if pt has symptoms of depression and impaired function
Define persistent complex bereavement disorder and what it includes.
*Unusually disabling or prolonged response to bereavement
May include the following:
- Indefinitely yearning for the deceased
- Preoccupation with the circumstances of the death of the deceased
- Intense distress/sorrow that does NOT improve over time
- Difficulty trusting others
- Depression
- Desire to join the deceased
- Impairment in social, occupational, and other areas of life
Explain the relationship between depression and anxiety
- Anxiety is a common symptom of depressive disorders
- If the anxiety is only present during depressive episodes, it does not warrant a separate diagnosis of anxiety disorder unless there are symptoms of other disorders (panic disorder, OCD, PTSD…)
Physical findings of MDD
- None, typically
- In patients with more severe symptoms, a decline in grooming and hygiene can be observed
- Weight gain or loss
- Psychomotor retardation (slowing or loss of spontaneous movement and reactivity)
- Flattening or loss of reactivity in the patient’s affect
- Speech:
- -May be normal, slow, monotonic, or lacking in spontaneity and content
- -Pressured speech should suggest mania
- -Disorganized speech should suggest psychosis
List the lab studies of MDD
- None for diagnosis, but can order studies to eliminate other etiologies:
- CBC
- TSH
- CMP
- RPR
- HIV
- ANA
- Drug test
What is the treatment of MDD?
- Psychotherapy
- Medication
- Patients with mild-moderate depression benefit equally from both
- Patients with severe depression benefit more from antidepressant medications than psychotherapy alone
Considerations for MDD medications
- 2-6 weeks at a therapeutic dose are needed to assess efficacy
- 50% of patients receiving an antidepressant show a response (compared to 30% of patients on placebo)
- Only 40% of patients in primary care respond to the first antidepressant medication
- There are NO clinical differences in response rates among commonly prescribed antidepressants
List factors for medication selection
- Safety & tolerability (affect compliance)
- Provider familiarity: aids in patient education, helps anticipate adverse effects
- Patient prior medication history
- Cost
- Patient preference
List the causes of medication failure
- Often, not caused by clinical resistance
- Medication noncompliance
- Inadequate duration of therapy
- Inadequate dosing
General info for SSRIs
- Selective Serotonin Reuptake Inhibitors
- In general, good starting SSRI’s are sertraline and escitalopram
- Easy dosing
- Low toxicity in overdose
SSRI ADRs
- GI upset (n/v/d)
- Sexual dysfunction (decreased libido, anorgasmia, ED)
- Changes in energy level (fatigue, restlessness, agitation)
- Increased risk of upper GI bleed
NOTE: Metabolized by cytochrome P-450 system - may have drug interactions
List the SSRIs
- Fluoxetine (Prozac)
- Paroxetine (Paxil)
- Fluvoxamine (Luvox)
- Citalopram (Celexa)
- Escitalopram (Lexapro)
- Sertraline (Zoloft)
Which SSRI does not have weight gain, but may have weight loss?
Fluoxetine (Prozac)
Which SSRI can cause hyponatremia?
Paroxetine (Paxil)
General info for SNRIs
- Serotonin and Norepinephrine Reuptake Inhibitors
- Safety & tolerability similar to SSRIs
- Second-line agents when SSRIs fail
- Can be used as first-line agents, especially in patients with significant pain syndromes
SNRI ADRs
- tachycardia
- dry mouth
- HTN
- mydriasis
List the SNRIs
- Venlafaxine (Effexor)
- Duloxetine (Cymbalta)
- Desvenlafaxine (Pristiq)
- Levomilnacipran (Fetzima)
- Milnacipran (Savella)
Which SNRI is good for chronic pain, neuoropathy, and fibromyalgia?
Duloxetine (Cymbalta)
Which SNRI is good for fibromyalgia?
Milnacipran (Savella)
What is serotonin syndrome?
- Produced by high levels of serotonin in the body
* Can be life-threatening
What are the symptoms of serotonin syndrome?
- Restlessness
- Abdominal pain
- Palpitations
- Flushing
- Muscle rigidity
- Sweating
- Seizures
- Hyperthermia
- Hallucinations
- Mental status changes
Tx of serotonin syndrome
- Discontinuation of offending medication
- Often resolves within 24 hours of stopping med
- May require hospitalization depending on severity of symptoms
Relationship between MAOI and SSRI
Must discontinue any MAOI for two weeks before SSRI initiation
List the serotonin modulators
SSRI + 5-HT1A receptor agonist
- Vilazodone (Viibryd)
- Vortioxetine (Brintellix)
- Nefazodone (Serzone)
- Trazodone (Desyrel)
What are the ADRs of SSRI + 5-HT1A receptor agonists?
Primarily GI
Pros of serotonin modulators
- Low toxicity in overdose
- Less sexual dysfunction than SSRIs
Which serotonin modulator can be used as a sleep aid?
Trazodone (Desyrel)
- very sedating
- NOTE: Can cause priapism in men (0.03%)
Which serotonin modulator shows no significant weight gain or sexual dysfunction?
Vilazodone (Viibryd)
List the atypical antidepressants
- Bupropion (Wellbutrin)
- Mirtazapine (Remeron)
What are the pros of atypical antidepressants?
- Low toxicity in overdose
- Less sexual dysfunction and GI distress than SSRIs
Buproprion (Wellbutrin)
- class
- contraindications
- ADRs
- NE and dopamine reuptake inhibitor (NDRI)
- Contraindicated in patients with seizure history
- Also used in patients for smoking cessation (Zyban)
- ADRs: agitation, insomnia
Mirtazipine (Remeron)
- affects
- ADRs
- Affects serotonin, norepinephrine, and histamine
- ADRs:
- -Drowsiness (taken at bedtime)
- -Weight gain
- -Tend to improve over time and with higher doses
Burspirone (Buspar)
- class
- uses
- tolerance
- Partial 5-HT agonist with serotonergic and some dopaminergic effects in CNS
- Good for anxiety and may have antidepressant effect at doses above 45 mg/d
- May be used as adjunct therapy with SSRI or TCA
- Tolerated better than benzodiazepines
General info for tricyclic antidepressants
- Used less commonly
- Need to titrate to effective dose
- Considerable toxicity in overdose
- Use with caution if patient has cardiac arrhythmia
ADRs of tricyclic antidepressants
*d/t anticholinergic and antihistaminic actions: sedation, confusion, dry mouth, orthostasis, constipation, urinary retention, sexual dysfunction, weight gain, arrhythmias, MI
List the tricyclic antidepressants
- Amitriptyline (Elavil)
- Nortriptyline (Pamelor)
- Desipramine (Norpramin)
- Clomipramine (Anafranil)
- Doxepin (Sinequan)
- Protriptyline (Vivactil)
- Trimipramine (Surmontil)
- Imipramine (Tofranil)
General info for MAOIs
- Widely effective in broad range of affective and anxiety disorders
- Hypertensive crisis risk, have to follow a low-tyramine diet
ADRs of MAOIs
insomnia, anxiety, orthostasis, weight gain, and sexual dysfunction
List the MAOIs
- Phenelzine (Nardil)
- Selegiline (Emsam)
- Isocarboxazid (Marplan)
- Tranylcypromine (Parnate)
Suggestions based on antidepressant effects
-cause weight gain
- Mirtazapine
- Amitriptyline
Suggestions based on antidepressant effects
-enuresis
imipramine
Suggestions based on antidepressant effects
-anxiety
Escitalopram
- Paroxetine
- Duloxetine
- Venlafaxine