midterm 2 Flashcards
whos more effected by depression
women
different kinds of antidepressants
selective serotonin reuptake inhibitors
selective antagonist receptor inhibitors
serotonin & norepinephrine reuptake inhibitors
norepinephrine dopamine reuptake inhibitor
tricyclic
ex of SSRI
citlaopram, fluoxetine, sertraline, paroxetine, fluvoxamine
SARI ex
trazadone
SNRI ex
venlafaxine
NDRI
bupropion
TCA ex
amitriptyline, clomipramine
MAOI ex
phenelzine, tranylcypromine
is there an increased risk of suicide when a pt starts taking antidepressant
YES (increase mood & anxiety may feel more suicidal or may want to act more on feelings)
how long does it take for effects to start being felt with antidepressants
2 weeks, 6 weeks for full therapeutic effect
off label uses of antidepressants
smoking cessation, insomnia, fibromyalgia, pain
depression due to an imbalance of
monoamine neurotransmitters
what are the monoamine neurotransmitters
serotonin, norepinephrine, dopamine
serotonin deficiency causes
disruptions in regulating mood, obsessions, anxiety, panic, sexual response, appetite, sleep, memory, learning
norepinephrine works on
mobilization of body & brain for action
ANS
fight or flight
mood, attention, concentration, working memory, speed of processing information
dopamine role is
motivating behaviour
MAOI is
oldest med
MAOI inhibits
MAO enzyme
MAO enzyme usually…
breaks down serotonin, norepinephrine, dopamine
when MAO is deactivated, there is
increase in serotonin, norepinephrine
why is MAOI not first choice of treatment
bad side effects
many side effects from MAOI occur becayse
interactions with norepinephrine & serotonin & CNS stimulation
common side effects of MAOI
- ortho hypotension = effect on norepinephrine
- anticholinergic effects (dry effects = dry mouth, retention)
- anxiety, agitation, restlessness = CNS stimulation
- insomnia
can OD on MAOI be fatal?
YES
can MAOI be taken with other antidepressants? why?
NO & serotonin syndrome
with MAOI, you need to . . . before new med started
2 week wash out period
MAOI + new antidepressant = too much serotonin = serotonin syndrome
before starting MAOI you need to
do a 1 week wash out period
what is the exception with with MAOI & wash out periods
fluoxetine = 5 to 8 week wash out period!!!!
MAOI need to avoid
foods tyramine
(aged, fermented, pickled, smoked)
why do certain foods need to be avoided with MAOI
hypertensive crisis
liver can’t metabolize dietary tyramine –> moves into circulatory system == release of epinephrine = hypertensive crisis & risk for stroke
examples of foods to be avoided with MAOI
preserved meats
aged cheeses
fermented (beer, ale, soy sauce)
pickled herring
caffeine
hypertensive crisis symptoms
palpitations, increased HR, tight chest, stiff neck, throbbing/radiating headache, high BP, can be fatal
tricyclic inhibts
reutake of serotonin & norepinephrine = increasing amount of serotonin
TCA work in
synapse & inihibit reabsorption therefore increasing volume
CNS effects of TCA
works on norepinephrine
side effects TCA
tachycardia, dysrhythmias, ortho hypotension
CNS effects (sedation, nightmares, anixety)
weight gain
anticholinergic
TCA treat
depression, anxiety, OCD, insomnia, pain (chronic)
can TCA OD be fatal
highly lethal
less than week supply needed
1st choice treatment for depression
SSRI
SSRI block
reuptake of serotonin
SSRI treat
MDD, GAD, social anxiety, OCD, PTSD, panic
side effects of SSRI
GI complaints, headache, dizziness, anxiety, akathisia, insomnia/sedation, sexual dysfunction
since SSRI don’t block norepinephrine, there is
less cardiac effects
SARI used for
sleeping
SNRI watch for
BP
NDRI 2 cateogires
wellbutrin (depression) = CNS stimulation
zyban (smoking cessation)
discontinuation syndrome effects
- flu symptoms (malaise, headache, GI upset, dizziness)
- mood disturbances
- aggression
- suicidal tendencies
- sleep disturbances
- electric shock sensations
- vivid dreams
- impaired concentration
how fast can discontinuation syndrome occur
1-3 days after stopping (depending on 1/2 life)
how to properly discontinue antidepressants
taper
do you need to avoid drug holidays with antidepressants?
YES because discontinuation syndrome
can discontinuation syndrome occur if antidepressants nottaken regularly
YES
serotonin syndrome is the
reaction to excess serotonin
happens when combo of agents given at same time w/o sufficient wash out period
serotonin syndrome can be fatal?
YES
symptoms of serotonin syndrome
sudden onset, fever (moderate), diaphoresis, muscle rigidity, hyperreflexia, increased HR & BP, delirium, hyperarousal, agitation
difference b/w serotonin syndrome & NMS
serotonin = sudden onset, mild fever, excess serotonin
NMS = gradual onset, increased CPK
NMS is the reaction to
dopamine
NMS symptoms
gradual onset
extreme stiffness/muscle rigidity, hyporeflexia, pupils normal, elevated CPK, fever, increased HR & BP, diaphoresis, changes in LOC
when switching meds…
do not abruptly stop med but taper off gradually increasing dose of different med
treatment options for depression
CBT, psychotherapy, ECT, transcranial magnetic stimulation, exercise
adjunctive therapy (gabapentin, thyroid meds, ritalin)
initial treatment needed for antidepressants to work
6-12 months
long term therapy use of antidepressants considered for
multiple episodes of depression, HX suicide, elderly
special considerations: liver/kidney impairment or pregnancy
why do pt need to report headache/palpitations & stiff neck immediately
hypertensive crisis
classic symptoms of high blood pressure
with venlafaxine you need to be careful with
increased BP
report eye pain immediately because
glaucoma
nursing process/pt teachnig
- 2 weeks before therapeutic effects
- do not stop abruptly
- careful w/ hypotension
- managing anticholinergic effects
- avoid driving if sedated
- stay out of sun = photophobic
- sexual dysfunction SSRI
- wash out periods
- side effects monitoring
- suicidal / homicial ideation
- OTC & prescription meds
- substance use
- assess for TD (AIMS)
bipolar I
manic episode which may have been preceded by & may be followed by hypomanic or major depressive epsiodes
bipolar II
current or past hypomanic episodes & a current or past major depressive episode
cyclothymic
episodes consisting of hypomanic and depressive symptoms that do not meet the full criteria for bipolar or major depressive disorder
mania
State of abnormally elevated arousal, affect, energy level, heightened overall activation with enhanced affective expression together with lability of affect
lithium salts
lithium carbonate, citrate
anticonvulsants
lamotrigine, valproic acid, carbamazepine
adjunctive for bipolar
antipsychotics, antidepressants, benzo, sedatives & hypnotics
purpose of mood stabilizers
stabilize mood (mania & depression)
does it take severeal weeks to reach therapeutic levels for mood stabilizers
YES
can other adjunctive meds be used to manage symptoms & behaviours until mood stabilizers reach therapeutic levels
YES
1st line tx for acute mania
lithium, valproates, 2nd gen antipsychotics, risperidone, aripiprazole, quetiapine, asenapine or combo TX
2nd line tx acute mania
olanzapine, ECT
depression 1st line for bipolar
lamotrigine, quetiapine, lithium or COMBO
2nd line tx depression for bipolar
divalproex, adjunctive SSRIs, bupropion
maintenance bipolar I 1st line
monotx w/ lithium, quetiapine (common), divalproex, lamotrigine, aripiprzaole
maintenance for bipolar II
quetiapine only recommended 1st line TX for BDII depression
2nd line tx for bipolar II
lithium, lamotrigine
body treats lithium like
salt
mechanism of action of lithium
increases inhibitory GABA neurotransmission & inhibits reuptake of post synaptic excitatory catecholamins (dopamine & norepinephrine)
symptoms of bipolar start to decrease
4-14days