Depressive Disorders Flashcards

1
Q

Depression Basic Facts

A
  • twice as common in females than males
  • depression increases risk for CAD, DM, and worsening prognosis
  • 3/4 experience recurrent depression
  • Risk of recurrent depression is higher if the index episode occurs at an earlier age and if there is a FH of depression
  • longer depression goes untreated, the worse the prognosis
  • 2/3 of completed suicides occurred in depressed pts.
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2
Q

Risk Factor For Depression

A

1) Female gender
2) +Family history of MDD
3) Stressful life events
4) Adverse childhood events:
5) Certain personality traits (neuroticism)

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3
Q

MDD diagnostic criteria

A
  • Depressed mood AND/OR loss of interest/pleasure (anhedonia) accompanied by other depressive symptom.
  • if pt. has BOTH depressed mood and anhedonia they only need 3 additional depressive s/s to be diagnosed
  • if pt. has ONLY 1 of depressed mood or anhedonia they need 4 additional depressive s/s to be diagnosed
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4
Q

Additional Depressive Symptoms

A
  • Insomnia or hypersomnia
  • Significant weight loss or weight gain (eg, 5 percent within a month) or decrease or increase in appetite nearly every day
  • Psychomotor retardation or agitation nearly every day that is observable by others
  • Fatigue or low energy
  • Decreased ability to concentrate, think, or make decisions
  • Thoughts of worthlessness or excessive or inappropriate guilt
  • Recurrent thoughts of death or suicidal ideation, or a suicide attempt
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5
Q

SIGECAPS mnemonic for diagnosing MDD

A
S: insomnia/hypersomnia
I: reduced interest/pleasure
G: excessive guilt/worthlessness
E: reduced energy/fatigue
C: diminished concentration/indecision
A: loss of/increase appetite/weight
P: psychomotor agitation/retardation
S: thoughts of suicide/attempt/thinking of death
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6
Q

Subtypes of depression

A

Anxious, mixed, melancholic, atypical, psychotic, catatonic, peri-partum, seasonal

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7
Q

Severity of Depression is based on:

A

of symps and degree of impairment

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8
Q

Subtype of depression characterized by:

  • very common, worse prognosis, slower to respond to tx
  • Keyed up/tense, restless, can’t concentrate because of worry, fear something awful might happen, fear loss of control
A

Anxious depression

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9
Q

Subtype of Depression characterized by:

-s/s of mania but does not meet criteria: 3 or more present nearly every day during the episode of MDD:

-Elated mood, grandiose, talkative, FOI (flight of ideas),
-Increased energy, high risk activities, decreased need for sleep
(this is a mix between depression and bipolar disorder)

A

Mixed Depression

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10
Q

Subtype of Depression characterized by:

  • Symptoms of depression with delusions and/or hallucinations
  • Content of psychosis typically mood congruent( consistent with depressive themes of guilt, deserving punishment), but can be mood –incongruent.
  • Particularly responsive to antidepressant PLUS antipsychotic (vs either alone) or ECT.
A

Psychotic depression

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11
Q

Subtype of depression characterized by:

  • if symptoms occurred during pregnancy or in the 4 wks following delivery
  • Post partum mood episodes with psychosis(depression or Manic): 1:500-1:1000.
A

Peri-partum depression

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12
Q

Persistant Depressive d/o

A

Depressed mood more days than not for ≥ 2yrs, Plus ≥2 of:

~Poor appetite/overeating
~Insomnia/hypersomnia
~Low energy/fatigue
~Low self esteem
~Poor concentration or indecision
~Hopelessness
*during the 2 yr period the patient has never been without the symptoms for more than 2 months.
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13
Q

Other Specified Depressive d/o

A

1) short duration depressive episodes (4-13 days)

2) depressive episode with insufficient amount of symptoms

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14
Q

Unspecified Depressive d/o

A

Depression is present, causes impairment, doesn’t meet full criteria but you don’t want to specify the reasons why and includes situation in which there is insufficient information to make a more specified diagnosis.

-Often diagnosed in ED

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15
Q

Substance Induced Depressive d/o

A

-Depressed mood or anhedonia

  • There is evidence from history/PE or labs of both:
    1) symptoms developed during or soon after substance intox/withdrawal
    2) the involved substance/medication is capable of producing the symptoms noted.
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16
Q

neurobiology of depression

A

↓ activity in the PFC impairs its inhibitory action on the limbic structures which in turn are overactive.

  • Normally the frontal lobe is what helps stop us from doing reckless things. In depression, there is an impairment in the inhibitory ability of the frontal lobe
  • The limbic system is also overactive in depression
17
Q

Changes noted in depression

A

↓ vol @ ant cingulate, orbitofrontal cortex, hippocampus, putamen & caudate
Abnormal regional blood flow & glucose metabolism in multiple Prefrontal, cortical & limbic structures
Hyperactivity @ Ventromedial PFC (causes anx/dep/rumination/tension)
Hypoactivity @ Dorsolateral PFC (psychomotor retardation/apathy/dec attention & memory)

18
Q

Neurochemical/hormonal Abnormalities in Depression

A
Increased:
~Cortisol
~CRH
`Pro inflammatory
cytokines

Decreased:
~Brain Derived Neurotrophic factor
~5-HT Neurotransmission (serotonin)
~NA Neurotransmission (norepinephrine)

19
Q

Monoamine Hypothesis

A

impaired adrenergic, serotonergic, dopaminergic activity causes depression.

20
Q

HPA Deregulation theory

A

Comes from the fact that people with depression normally have increased levels of cortisol

21
Q

Inflammation, reduced neurogenesis/neuroplasticity Theory of Depression

A

Comes from the BDNF, and TNF saying that inflammation of the brain is the cause of the depression

22
Q

Important Aspects of Depression Assessment

A

-Determine the chronology of the current depressive symptoms and any prior history of depressive episodes and their course and treatment.

-Check duration and dose of any previous depressive medications
(Takes 2-3 weeks for initial change
Take 6-8 weeks for more serve change )

  • Determine the impact of the depressive episode upon occupational and interpersonal functioning.
  • Elicit alleviating or aggravating factors, including stressful life events and social or occupational circumstances.
  • Address comorbid conditions: psych, medical, substances
  • Screen for mania/hypomania/mixed
  • Safety assessment
23
Q

Medical Conditions Associated with Depression

A
  • Thyroid dysfunction
  • Cushings Dz: incidence can be as high as 80%
  • Diabetes
  • Collagen vascular disorder(lupus, rheumatoid arthritis)
  • Vit Def(thiamine, folate, niacin, B12)
  • Cardiac illness: common after MI
  • Post stroke Depression
  • Parkinson’s Dz: incidence 50%
  • Huntington’s Dz: incidence 40%
  • Wilson’s dz: incidence 20%
  • Cancer
  • Seizure d/o
  • Pain d/o
24
Q

Depression Treatment

A
  • Education
  • Medication (start with SSRI/SNRI then augment)
  • Therapy
  • Other (diet, exercise)
25
Q

Natural Products for Treating Depression

A

-S-adenosyl methionine(SAMe)
(possible GI upset)

-Omega-3 Fatty Acids( EPA and DHA)
(EPA/DHA of 3:1)

-St. John’s Wort
(don’t mix with SSRI)

26
Q

Things to pay attention to when monitoring outcomes

A
  • Depression symptom severity (PHQ9)
  • Tolerability
  • Adherence to treatment
  • Safety