Bipolar Flashcards
Define mood
a pervasive and sustained emotion of feeling tone that influences a persons behaviour and colors his or her perception of the world
- can be labile, fluctuating or alternating rapidly between extremes
what is bipolar 1 disorder?
a distinct period of at least 1 week of full manic episode: abnormally and persistently elevated mood and increased energy
what is bipolar 2 disorder?
a current or past hypomanic episode and a current or past major depressive episode
men have more ______ episodes and women have more _____ or ______
manic; depressive; mixed
is there a cure for bipolar?
no but full recovery/maintenance is possible
what is the etiology of BD?
developmental, genetic, psychological, and neurobiologic factors may all contribute
risk factors for BD
drug or alcohol abuse
medical conditions
period of high stress
having a 1st degree relative
major life changes
which medical conditions are risk factors for BD?
hyperthyroidism
hormonal changes
CNS disorders
endocrine dysregulation
CVD
which medications can induce mania?
alcohol intoxication
antidepressants
DA-augmenting agents (CNS stimulants: amphetamines, cocaine, caffeine)
marijuana intoxication
steroids
thyroid preparations
when is the typical onset of bipolar?
typically before 25 yo
avg. 20-25
what happens for those who develop illness before age 19?
longer delay to treatment
greater depressive symptom severity
higher levels of comorbid anxiety/substance use
why is it important to get people are the right therapy early and keep them on it?
to slow down potential neurodegeneration
what comorbid conditions may worsen existing BD or make treatment challenging?
anxiety disorders(50-60%)
substance use disorder(60%)
ADHD(20%)
PTSD
what is the leading cause of death in BD?
suicide
what manual is used to diagnose bipolar?
DSM-5
what is the diagnostic criteria for mania relating to symptoms?
persistently and abnormally elevated mood(irritable or expansive) and energy, with at least 3 of the following changes from usual behaviour:
1. grandiosity/high self-esteem
2. decreased need for sleep
3. racing thoughts
4. increased talking/pressured speech
5. distractability
6. increased goal-directed or psychomotor agitation
7. excessive engagement in high risk behaviours
how long must symptoms be occurring to be considered a mania diagnosis?
nearly every day for at least 1 week
after considering symptoms what other criteria must be met for a mania diagnosis?
leads to significant functional impairment OR includes psychotic features OR necessitates hospitalization AND episode is not due to physiological effects of a substance or another medical condition
if mania was caused by a medication but stops after d/c that medication, does the patient have bipolar?
no
what is the pneumonic for mania symptoms?
DIGFAST
(slide 22)
what is the DSM-5 criteria for BDI?
manic episode REQUIRED for diagnosis
hypomanic episode or major depressive episodes may occur before or after manic episode but are NOT required for diagnosis
diagnostic criteria for hypomanic episode
same symptom criteria as manic episode but only lasting up to 4 days
unequivocal change in functioning or mood that is uncharacteristic of the individual and/or observable by others
hospitalization not required. no psychosis.
what is the DSM-5 criteria for BDII?
hypomanic episode AND major depressive episode (current or past episodes)
what is the diagnostic criteria for a major depressive episode?
5+ symptoms must be present nearly everyday during the same 2-week period and result in change in functioning and must include 1 or both of:
- depressed mood most of the day, nearly every day
- diminished interest or pleasure in all or most activities
what are the symptoms for diagnosing a major depressive episode?
S - sleep pattern changes
I - interests or activity changes
G - guilty feeling or increased worry
E - energy changes
C - concentration changes
A - appetite changes
P - psychomotor disturbances
S - suicidal ideation
what is the mood disorders questionnaire(MDQ)?
3 question, 13 item PATIENT RATED used to screen for possible BD
- most specific for identifying BDI
what is a positive MDQ score?
yes to 7/13 items from Q1
yes to Q2
“moderate or severe problem” for Q3
what is bipolar often misdiagnosed as?
MDD
what are some of the challenges in BD diagnosis and treatment?
delay to diagnosis
misdiagnosis
limited clinical trials
what is the response time for mania treatment?
1-2 weeks
full clinical benefit 3-4 weeks
what is the response time for depression treatment?
2-4 weeks
full clinical benefit 6-12 weeks
what is the non-pharm therapy for BD?
exercise, adequate sleep, healthy diet, decreased/abstinent substance use, decreased caffeine/nicotine/alcohol
bright light (depression)
relapse prevention plan
CBT, therapy
ECT
what is included in a wellness recovery action plan (WRAP)?
- early warning symptoms
- tools when threat of crisis starts
- what they have to do to stay well
- their responsibilities
- how they feel when they are well
- what they do and who they entrust to do things when in crisis
- list of people they can call in crisis
- their triggers
- post-crisis plan
what mood stabilizers are used in BD?
lithium
anticonvulsants ex. valproic acid & lamotrigine
atypical antipsychotics
what are the most commonly used mood stabilizers?
lithium
valproic acid/divalproex
lamotrigine
what are the indications of lithium?
BD - acute mania or prophylaxis/maintenance
schizoaffective disorder
unipolar depression - antidepressant augmentation
what is the bioavailability of lithium?
liquid: 100%
regular caps: 95-100%
ER tab: 60-90%
(very good F)
what side effects may be related to the onset and peak of lithium?
tremors or nausea
quick onset of 30-60 minutes
how does lithium act in the body?
distributes evenly in the total body water space - the body treats lithium like a salt
- very well absorbed
how is lithium metabolized?
it is eliminated mainly by the kidneys (95% renal elimination)
what decreased the clearance of lithium?
hyponatremia, dehydration, renal failure or dysfunction, decreased renal blood flow
which medications are associated with the potential for lithium toxicity?
ACEi
NSAIDs
thiazides
what is lithiums therapeutic range for acute mania? maintenance therapy? elderly?
acute mania: 1.0-1.2mmol/L
maintenance: 0.6-1.0mmol/L
elderly: 0.6-0.8mmol/L
at what lithium level would we start to see signs of toxicity?
> 1.5mmol/L - drowsy, ataxia, tremor, slurred speech, hypertonicity
2mmol/L - decreased HR, arrhythmia’s, seizures, myocarditis, coma, death
when should a lithium sample be taken?
12 hours post dose - usually in am after the evening dose
how frequently should lithium sampling be done?
5-7 days after starting therapy or changing dose, then once weekly until at a stabilized x 2 weeks, then monthly for up to 3 months, then at least every 6 months (once on long term therapy)
how can we minimized GI side effects of lithium?
give with food or divide dose BID
when is lithium CI?
in acute renal failure
do we need to adjust lithium doses in renal impairment?
yes once below 50mL/min
what factors can decrease lithium levels?
caffeine
sodium supplement
burns
pregnancy
excessive fluid intake
what factors can increase lithium levels?
NSAIDS
thiazide diuretics
ACEi/ARBs
dehydration
sodium loss