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Therapeutics Neuro Gable
Exam 1 Bipolar
63
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3rd Grade
08/19/2010

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Cards

Term
Symptoms of Mania
Definition

GIDDINESS

 

Grandiosity

Increased activity

Decreased judgement

Distractibility

Irritability

Need for sleep decreased

Elevated mood

Speedy thoughts

Speedy speach

Term

DSM-IV-TR

Criteria for a Manic Episode

Definition

1. > 1 week of elevated, expansive, or irritable mood
2. Mood Disturbances: > 3 of the following symptoms:

  • Grandiosity
  • Decreased need for sleep
  • Hyperverbal
  • FOI
  • Distractibility
  • Excessive involvement in pleasurable activities
  • Increase in goal-directed activity

3. Symptoms must not meet criteria for mixed episode

4. Mood disturbances severe enough to cause marked impairment, need for hospitalization, or psychosis is present

5. Symptoms not due to substance abuse or general medical condition (hyperthyroidism)

Term
Hypomania Characteristics
Definition
  • Less severe form of mania
  • At least 4 days of persistently elevated mood and associated with > 3 of the following symptoms:
  1. inflated self-esteem
  2. decreased need for sleep
  3. distractibility
  4. irritability
  5. pressured speech
  6. increased activity or excessive involvement in pleasurable activities
  7. racing thoughts (FOI)
  • Hospitalization NOT required
  • NO psychotic features
Term
Bipolar Disorder, Type I: Characteristics
Definition
  • Males = Females
  • Presence of only 1 manic episode (necessary)
  • The manic episode is not better accounted for by schizoaffective disorder

 

Term
Bipolar Disorder, Type II: Characteristics
Definition
  • Females > Males
  • Presence or history of 1 or more major depressive episdoes
  • Presence or history of at least 1 hypomanic episode
  • There has never been a manic episode or a mixed episode
  • The mood symptoms are not better accounted for by schizoaffective disorder
  • The symptoms cause clinically significant distress or impairment in social, occupational, or other important areas of functioning

 

Term
Bipolar Disorder Specifiers: Rapid Cycling
Definition
  • > 4 mood episodes (mania, depression, mixed episode, hypomania) in 1 year
  • 5-15% of patients with bipolar disorder
  • > women (70-90%)
  • More difficult to treat
Term
Clinical Signs and Symptoms of Bipolar Disorder
Definition

Stage 1 (hypomania)

 

euphoria, labile mood, grandiosity, overconfidence, racing thoughts, hyperverbal


Stage 2 (mania)

 

irritability, dysphoria, hostility, anger, delusions, cognitive, disorganization

 

Stage 3 (psychosis)

 

terror, panic, bizarre, behavior, hallucinations, disorientation

Term
Mood Stabilizers: Uses
Definition
  • Acute manic , mixed, and hypomanic episodes
  • Acute major depressive episodes in bipolar disorder
  • Maintenance tx of bipolar disorder
  • Schizoaffective disorder
  • Refractory schizophrenia
  • Refractory depression
  • Assaultive, aggressive, impulsive behavior
Term
Mood Stabilizers: Medications
Definition
  • Lithium
  • Valproate
  • Carbamazepine
  • Lamotrigine
  • Atypical Antipsychotics
Term
Lithium: Therapeutic Uses
Definition

Most effective for Bipolar Disorder Type I

  • Bipolar mania and depression
  • Bipolar relapse prevention
  • Unipolar depression augmentation
  • Suicidality prevention
Term
Lithium: Less Effective For...
Definition
Rapid Cyclers and Mixed Episodes
Term
Lithium: MOA
Definition
  • Antagonizes Adrenergic and Dopaminergic activity
  • Enhances serotonergic activity
  • Inhibits neurotransmitter-coupled Adenyly Cyclase activity and cAMP formation
  • Inhibits PIP
  • Inhibits G-protein coupling to muscarinic cholinergic and beta-adrenergic receptors
Term
Lithium Plasma Level Monitoring
Definition

0.8-1.5 mEq/L --> acute mania

0.6-1.2 mEq/L --> maintenance

 

Toxicity may occur if > 1.5 mEq/L

 

Every 300 mg increase in dose will increase Lithium plasma levels by 0.15-0.35 mEq/L

Term
When should you draw Lithium plasma levels?
Definition
  • Draw plasma levels 12 hrs post-dose
  • Obtain plasma level ~ 5 days after initiating therapy or after dose change
  • Check plasma levels every 1-2 weeks until patient is stabilized
  • Maintenance plasma levels may be measured every 3-6 months
Term
Lithium Dosing
Definition

Initial: 300-1200 mg/day in divided doses BID-TID

 

100 lbs -- 300 mg BID

150 lbs -- 300 mg TID or 450 mg TID

200 lbs -- 600 mg TID

 

Increase by 300 mg to 600 mg q 5 days depending on Lithium plasma level

Acute dosing range: 1200-2700 mg/day

Usual maintenance dose: 900-1800 mg/day

 

Term
Lithium Early-Onset Adverse Effects
Definition
  • Nausea/vomiting
  • Diarrhea
  • Fine hand tremor
  • Muscle weakness
  • Fatigue
  • Lethargy
  • Headache
  • Polydipsia and polyuria
  • Impaired cognitive functioning
  • "Mental clouding or loss of creativity"
Term
Managing Adverse Effects for Lithium: GI upset
Definition
  • Take Li with food
  • Change to ER product
Term
Managing Adverse Effects for Lithium: Polyuria/Polydipsia
Definition
  • Give total dose q HS to decrease urine volume
  • Add HCTZ 25-50 mg/day and decrease Li dose or add amiloride
Term
Managing Adverse Effects for Lithium: Intentional Hand Tremor
Definition
  • Check for toxicity and consider decrease Li dose
  • Change to ER product
  • Add propranolol 20-120 mg/day
Term
Lithium Late-Onset Adverse Effects
Definition
  • Cardiovascular: prolonged QT interval, T-wave flattening or inversion, AV block, bradycardia
  • Dermatologic: worsens acne, alopecia
  • Endocrine: hypothyroidism
  • Metabolic: weight gain
  • Hematologic: benign reversible leukocytosis
  • Nephrologic: decreased GFR, diabetes insipidus
Term
Lithium Baseline Monitoring
Definition
  • Thyroid (TSH) - q 6 month
  • Renal function (SCr and BUN) - q 3 month
  • CBC with diff
  • Electrolytes (hyponatremia)
  • ECG (pt > 40 yo or preexisting heart condition)
  • Urinalysis (specific gravity)
  • Pregnancy test

 

Term
Lithium Acute Toxicity: Moderate and Severe
Definition

Moderate (> 1.5 mEq/L)

  • Confusion
  • Sedation
  • Lethargy
  • Muscle weakness
  • Ataxia
  • Dysarthria
  • N/V
  • Slurred speech
  • Fine to coarse hand tremor

Severe (> 3.0 mEq/L)

  • Hyperreflexia
  • Delirium
  • Seizures
  • Coma
  • Renal failure
  • Death

 

Term
Lithium: Increased Risk for Toxicity
Definition
  • Elderly patients
  • Drug interactions (NSAIDs, ACEI, ARBs)
  • Na+ restricted diets (< 2 g/day)
  • Dehydration, heavy exercise, hot weather
  • Vomiting and severe diarrhea
Term
Treatment of Acute Lithium Toxicity
Definition
  • Discontinue Li
  • Gastric lavage
  • Monitor for fluid imbalance and rehydrate
  • Correct electrolyte imbalances
  • Intermittent hemodialysis (12 hrs on, 12 hrs off) -- can increase lithium clearance
Term
Lithium: Drugs that increase Li
Definition
  • NSAIDs -- enhances reabsorption of Li secondary to inhibition of PG synthesis
  • Diuretics -- cause Na depletion which causes an increase in proximal tubular reabsorption of Li
  • ACEI -- volume depletion = decrease in GFR causing decrease Li excretion and increase Li levels
Term
Lithium: Drugs that decrease Li
Definition
  • Theophylline and Caffeine -- increase the renal clearnace of Li
  • Alcohol -- concomitant use of Li + EtOH results in small increase or decrease in Li plasma concentration
Term
Lithium: Pharmacodynamic Drug Interactions and Neurotoxicity
Definition
  • Methyldopa
  • Carbamazepine
  • CCB (diltiazem, verapamil)
  • Phenytoin
  • SSRIs (fluvoxamine, fluoxetine)
Term
Valproate for Bipolar Disorder: Positive predictors of response
Definition
  • Rapid cycling or mixed mania
  • Hx of head trauma
Term
Valproate for Bipolar Disorder: Advantages
Definition
  • Lower risk of toxicity (OD risk)
  • Safer in renal disease
  • Less drug interactions (compared to Li)
Term
Valproate for Bipolar Disorder: Disadvantages
Definition
  • Less evidence for relapse prevention
  • Hepatotoxicity
  • No IM dosage form available
Term
Valproate Dosage Forms: Divalproex Na
Definition
  • Enteric Coating Available
  • Absorption in the small intestine
  • QD-TID dosing
  • GI upset +
Term
Valproate Dosage Forms: Valproic Acid
Definition
  • No Enteric Coating Available
  • Absorption in the stomach
  • BID-TID dosing
  • GI upset +++
  • Liquid capsules
Term
Valproate Dosage Forms: Divalproex Na ER
Definition
  • No Enteric Coating Available
  • Absorption in the small intestine
  • QD dosing
  • GI upset +
Term
Valproate Dosing
Definition

Initial Slow Titration

  • 250 mg BID or TID, increase by 250-500 mg q 3-7 days as tolerated

Initial Loading Dose

  • 20 mg/kg/day
  • Add "0" to weight in lbs

Usual Maintenance Dose

  • 1000-4000 mg/day

Max Recommended Maintenance Dosage

  • 60 mg/kg/day
Term
Valproate Adverse Effects
Definition

Dose-Related ADRs

  • GI upset (nausea, diarrhea, dyspepsia)
  • Sedation, ataxia
  • Intentional hand tremor
  • Transient elevated LFTs
  • Thrombocytopenia (< 100,000 caution; < 50,000 d/c)
  • Weight gain
  • Amenorrhea - PCOS

Other ADRs

  • Alopecia
  • Hyperammonemia
  • Rash
  • Pancreatitis
Term
Valproate Black Box Warning
Definition
  • Teratogenicity
  • Hepatotoxicity
  • Pancreatitis
Term
Valproate Plasma Level Monitoring
Definition
  • Obtain plasma level 2-3 days after initiating tx or after dose change
  • Draw plasma levels 12 hrs post-dose
  • Obtain plasma levels monthly until stable, until q 3 months
  • Therapeutic plasma level: 50-125 mcg/mL
Term
Valproate Lab Monitoring
Definition
  • LFTs, Bilirubin
  • CBC with diff
  • Routine weight
  • Ammonia levels (if symptomatic)
  • Vagina consult
  • Prego test
Term
Drug Interactions with Valproate
Definition
  • Aspirin and Anticoagulants -- increase risk for bleeding
  • Lamotrigine, lorazepam -- increase blood levels of lamotrigine, lorazepam
  • Alcohol and CNS depressants -- increase toxicity of CNS depressants
Term
Lamotrigine Dosing: Escalation Regimen for patients NOT taking carbamazepine or valproate
Definition
  • weeks 1-2 initiate therapy with 25 mg QD
  • weeks 3-4 give 50 mg QD
  • week 5 give 100 mg QD
  • weeks 6-7 and thereafter, give 200 mg QD
Term
Lamotrigine Dosing: Escalation Regimen for patients taking valproate
Definition
  • weeks 1-2 initiate therapy 25 mg every other day
  • weeks 3-4 give 25 mg QD
  • weeks 5 give 50 mg QD
  • weeks 6-7 and thereafter, give 100 mg QD
Term
Lamotrigine Dosing: Escalation Regimen for patients taking carbamazepine, phenytoin, phenobarbitol, primidone or rifampin
Definition
  • weeks 1-2 initiate therapy with 50 mg QD
  • weeks 3-4 give 50 mg BID
  • week 5 give 100 mg BID
  • week 6 give 150 mg BID
  • week 7 and thereafter, > 200 mg BID
Term
Lamotrigine: ADRs
Definition
  • Dizziness
  • Somnolence
  • Ataxia
  • N/V
  • Blurred vision
  • HA
Term
Lamotrigine: Black Box Warning
Definition
Stevens-Johnson Syndrome
Term
Lamotrigine: Monitoring Parameter
Definition
  • Skin for rash
  • LFTs annually
  • No plasma blood monitoring necessary
Term
Carbamazepine Dosing: Tx for bipolar disorder (mania or depression), alone or in combo with Li
Definition

Oral dosage regular-release tab

  • Initially dose 200 mg BID
  • Increase q 3-4 days to achieve therapeutic serum conc.
  • Usual range 600-1600 mg QD in divided dose
Term
Carbamazepine: ADRs
Definition
  • CNS: sedation, slurred speech, dizziness, ataxia, diplopia
  • Hyponatremia
  • Transient LFT increases: cholestatic jaundice
  • Severe rash: rare
Term
Carbamazepine: Black Box Warnings
Definition
  • Agranulocytosis
  • Aplastic anemia
Term
Carbamazepine: Plasma Monitoring
Definition
  • Obtain plasma level 7 days after initiating therapy or after dose change (need 1 week to reflect new steady state)
  • Draw plasma levels 12 hr post dose
  • Obtain level weekly during titration; every 3 months or as clinically necessary thereafter
Term
Carbamazepine: Therapeutic Levels
Definition
  • 4-12 mcg/mL (tx of seizure disorder)
  • 8-12 mcg/mL (establish adequate trial)
Term
Carbamazepine: Lab Monitoring
Definition
  • Liver (ALT/AST)
  • CBC
  • Urinalysis and BUN
  • Metabolic Panel
  • ECG
  • Pregnancy test
Term
Oxcarbazepine Dosing: Tx of bipolar disorder, including mania
Definition
  • Initiate at 300 mg BID
  • Increase (as tolerated) by 300 mg QD every third day or 600 mg QD at weekly intervals
  • Usual maintenance dose: 1200-2400 mg QD given in divided doses
Term
Oxcarbazepine Dosing: Patient with Renal Impairment
Definition
Initiate tx at 1/2 usual starting dose and increase at slower rate
Term
Oxcarbazepine: ADRs
Definition
  • Better tolerated than CBZ
  • CNS -- sedation, dizziness, ataxia, HA
  • Hyponatremia
  • Rash
  • Nausea
Term
Oxcarbazepine Plasma Level Monitoring
Definition
Generally not necessary
Term
Oxcarbazepine Lab Monitoring
Definition
  • Metabolic panel -- significant hyponatremia (Na<125mmol/L) may develop usually during 1st 3 months of tx
  • Monitor at baseline, monthly for 1st 3 months and when s/sx of hyponatremia occur --> nausea, malaise, HA, lethargy, confusion
Term
Topiramate Dose
Definition
  • 25-50 mg/day
  • Titrate in increments of 25-50 mg/week  (max = 1600 mg/day)
Term
Topiramate: ADRs
Definition
  • Weight loss (nausea,dyspepsia)
  • Kidney stones
  • Narrow angle glaucoma
  • Oligohydrosis
  • Metabolic acidosis
  • Cognitive dysfunction
Term
Atypical Antipsychotics in Bipolar Disorder
Definition
  • Usually used to help stabilize pts who are acutely manic or agitated
  • Generally not accepted as monotherapy for maintenance, although olanzapine and aripiprazole are indicated for maintenance treatment
  • Pts with mood disorders may be more sensitive to EPS, which is a possibility with the atypical antipsychotics
Term
APA Guidelines for Bipolar Disorder Type I
Definition
  • 1st line -- Li, VPA, or SGA
  • 2nd line -- carbamazepine, oxcarbazepine
Term
APA Guidelines for Bipolar Disorder Type II
Definition
  • 1st line -- Li or lamotrigine or quetiapine
  • Other -- fluoxetine + olanzapine combo
  • Psychosis or high suicide rate -- add SGA or ECT
  • May add on antidepressants in more severely ill pts
Term
APA Guidelines for Bipolar Disorder, Mixed or Rapid Cycling
Definition
  • 1st line -- Combo therapy -- VPA may be more effective than Li
  • Rapid cycling -- d/c all antidepressants
Term
Bipolar Disorder: Non-Rx Recommendations
Definition
  • Adequate sleep hygeine
  • Stress reduction
  • Psychoeducaiton
  • Balanced diet (L-tryptophan) + omega-3 fatty acids
  • ECT (tx refractory)
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