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Medical disorders that can result in a manic episode (5)
- 1. brain (tumors, damage...)
- 2. Infections
- 3. Metabolic disorders ( NB: Hyperthyroid)
- 4. Seizure disorders
- 5. Degenritive DOS in CNS
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Certain drugs/substances can cause manic episodes?(7)
- 1. Psychostimulants
- 2. Too much Thyroid hormones, such as levothyroxine
- 3. Some antihypertensive medications
- 4. Corticosteroids such as prednisone
- 5. Isoniazid
- 6. Procarbazine
- 7. S-adenosylmethionine (SAMe)
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Can cause manic episodes Antidepressants how? (3)
- 1. Manic induction or “Manic push: Tricyclic antidepressants and SSRIs can trigger mania in some
- 2. SRRI abrupt withdrawal
- 3. Manic induction (false mania)
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See combination of several classes of drugs at one time (3 combos)
- 1. SSRIs and mood stabilizers
- Some argue SSRIs for short term, some always
- 2. Atypical antipsychotics and SSRIs
- 3. Anticonvulsants and SSRIs
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With typical or classic mania drugs of choice (2)
lithium or valproate
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Goals of Psychopharmacologic Treatment of Bipolar Disorders (4)
- 1. Prevention of relapse
- 2. Reduction of mood symptoms
- 3. Reduction of risk for suicide
- 4. Treatment of bipolar patients does not end with the
- prescription of mood stabilizing medications (stress big issue with depression)
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Lithium Carbonate (do what in bp)?
Useful for reducing the frequency and severity of recurrent bipolar episodes
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Three Hypotheses for Action in Lithium?
- 1. Biogenic Amine Hypothesis: Lithium may exert its therapeutic effect by modifying membrane excitability via an ionic mechanism. Intriguing, yet inconsistent
- evidence that Li+ competes for Ca2+ binding sites
2. Electrolyte Hypothesis: Biogenic Amine Hypothesis Li act with monomine. Lithium’s actions may be related to its ability to modulate serotonin and/or norepinephrine function
3. 2nd Messenger System Hypothesis: “Lithium alters the transduction of the neurotransmitter-initiated signal by modifying the function of second messengers". Lithium may reduce the post-synaptic actions of 5-HT and NE on second messenger systems.
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Pharmacokinetics of lithium: issue with kidneys vs. liver?
Processed and cleared by kidneys (not liver): Excreted in its intact form via kidney (95%), sweat, saliva and breast milk (5%)
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Therapeutic index of lithium and blood level vs. dosage?
- 1. Narrow therapeutic-toxic ratio (i.e., low therapeutic index)
- 2. Blood level is more important than the dosage
- Dosage is adjusted according to age, renal function, lithium level and clinical response
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Lithium toxicity – symptoms (3), what produces it pharmacokinetically?
- 1. a. Flu-like symptoms
- (Worsened nausea, vomiting, diarrhea, muscular weakness)
- b. Muscle twitching, drowsiness, confusion, arrhythmia, coma, convulsions, death
- c. CNS effects
- (Disorientation, confusion, tinnitus (ringing in the ears),
- worsening of hand tremor, slurred speech, ataxia (gait incoordination), muscle twitching, delirium,
- seizures, coma)
- 2. Inadequate fluid intake increases likelihood of toxicity
lDiuretics will do this as well (have to balance fluid)
lMUST discontinue the drug immediately
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Lithium interactions w/ diuretics (2)
- Diuretics will increase lithium levels by retaining lithium
- and eliminating water.
- Sodium trade off with lithium.
- Give up sodium à increase retention of lithium. Diuretics (sodium loss) à more lithium à go toxic:
- 1..Coffee – diuretic effect <NB2. Alcohol – diuretic effect <NB
- Diuretics (sodium loss) à go toxic Combination with tobacco
- Nicotine accelerates the metabolism of caffeine (coffee)
- While still smoking need to drink more coffee to get caffeine effects
- Get increased diuretic effect from fluids alone à go toxic
- If quit smoking, can have dramatic rise in caffeine levels à go toxic
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Lithium interactions? (5)
- l. Combination with SSRIs
- -Combination will increase risk of
- serotonin syndrome
- 2. Combination with TCAs (raise the level of TCA increasing effects)
- -Neurotoxic effects
- -Even at normal doses of lithium and TCA
- 3. Muscle relaxants
- -prolongs effects of lithium à go toxic
- 4. Phenothiazines
- -decreases levels of phenothiazines
- 5. Non-steroidal and anti-inflammatory drugs
- -increase lithium retention à go toxic
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Issue of drugs as off-label or on-label?
- FDA has NOT given approval of these drugs
- This type of medication usage is known as "off label"
- Important to recognize "off label" usage is generally
- considered an option only after all traditional treatment methods have failed (can use but more risk/ some used as part of treatment)
- -new drugs work differently for different people and each has its own unique side effects
- These drugs have not been approved by the (FDA) for the treatment of bipolar disorder
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Anticonvulsants and BD Lamitcal – effects and
side effects and interactions(2)?
- -Fewer side effects than lithium
- 1. Side effects: headaches, rash,
- dizziness
- -Rare but dangerous severe rash: Stevens-Johnson syndrome
- 2. SE: -with ETOH
- -Psychomotor impairment
- -Lower seizure threshold
- -CNS depression
- -. with carbamazepine
- -decrease Lamictal levels
- -increase likelihood of cognitive problems
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Tegretol – effects and side effects and interactions?
- (Experimental or off label (no FDA approval for BlRapid cycling BD (4+/yr))
- 1. Side effects like TCAs
- 2. a. Do NOT use with Serzone – dangerous interaction
- -Serzone causes liver toxicity
- b. Negative interactions with Prozac, Luvox, and lithium
- -mandatory regular blood count monitoring
- and periodic liver function tests. several adverse interactions can occur when combined with other drugs due to induction of liver enzymes
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Tegretol: ADVANTAGES (5)
- 1. Strong acute efficacy data
- 2. Broad activity spectrum
- 3. Possible antidepressant effects in bipolar disorder
- 4. Long history of use
- 5. No weight gain
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Tegretol: DISADVANTAGES (5)
- 1.May lose effectiveness over the long-term
- 2. Drug interactions
- 3. Blood disorders
- 4. Narrow therapeutic index
- 5. Acute side-effects
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Signs of overdose with anticonvulsants? (6)
- 1. CNS signs
- 2. Somnolence, seizures, coma
- 3. Gastrointestinal symptoms
- 4. Severe nausea and vomiting
- 5. Cardiac signs
- 6. Arrhythmias
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New information from FDA regarding warning on anticonvulsants (4)
- l. CNS signs
- -Confusion
- 2. Renal signs
- -Urinary retention
- 3. Hematological signs
- Bone marrow suppression
- 4. suicidality
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Use of antipsychotics for BD – acute use vs. chronic and which drugs are used
- 1. Classic Antipsychotics: Used for very short term control of excessive psychotic behaviors
- 2. Atypical Antipsychotics: bipolar patients manifest
- psychotic symptoms, either during manic or depressive episodes as monotherapy for episodes of mania or bipolar depression
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Use of atypical antipsychotics (3)?
- 1. Atypical Antipsychotics: either during manic or depressive episodes
- 2. as monotherapy for episodes of mania or bipolar depression
- 3. May also be useful for relapse prevention and maintenance treatment
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Psychotherapy issues for BD and medical management?(5)
- compliance is a big issue
- 1. people miss their highs
- 2. life is "boring" without them
- 3. serious side effects
- 4. difficulty with polypharmacy
- 5. often see many changes in meds
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Compliance problems – how to help this
- Components for psychoeducational protocols:
- 1. Education about BD
- 2. Relapse prevention
- 3. Medication compliance
- 4. Communication skills training
- 5.Research on family-based interventions (Falloon):
- lower rates of family separations
- greater improvements in level of family functioning
- higher rates of full recovery
- lower rates of rehospitalization for 2 years post-rx
- Over critical hyper involved family more issues
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Family based interventions for BD
Research on family-based interventions (Falloon): lower rates of family separationsgreater improvements in level of family functioninghigher rates of full recoverylower rates of rehospitalization for 2 years post-rx Over critical hyper involved family more issues
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Use of BD medications for cyclothymia
- 1. Somewhere between Bipolar and normal experience:
- -Hypomanic episodes
- -Some depression, but not the full depth of disorder
- -Must have the disorder for at least 2 years before it is
- diagnosed
- -Must be chronic
- 2. Do not have evidence for effectiveness of medications here (NO DATA just
- basic Sx relief)
- Have tried lithium and valproic acid
- Psychotherapy is indicated (characterological problems)
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Use of BD mediations for borderline personality disorder
- No research evidence for effectiveness of this approach
- : Based on idea by Akiskal that BPD is subtype of BD (e.g.,
- Bipolar 5)
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