anxiety Flashcards
generalised anxiety disorder is…
excessive anxiety and worries > 6 months
fear circuit regulated by
amygdala
worry circuit regulated by
cortico striatal thalamic loop
medical conditions associated with anxiety
cvs - CHF, MI, IHD
endo - hyperthyroidism, hyperparathyroidism, hypoglycaemia
neuro - dementia, delirium
pulmonary - asthma, COPD
drug induced anxiety
sympathomimetics, stimulants, caffeine, levothyroxine, corticosteroids, antidep, dopamine agonists, beta-adrenergic agonist
panic attack definition
discrete period of intense fear and discomfort, at least 4 sx and reached a peak within 10 mins.
GAD definition
at least 3 symptoms for more days than not for the past 6 months
how long must the obsessions/compulsions last?
at least 1hr a day / significantly impairs functioning
what does CBT help in
PTSD, PD, OCD
drugs of choice for GAD
SSRIs, venlafaxine, pregabalin
drugs of choice for PD, SAD, PTSD
SSRIs
OCD drugs
SSRIs, clomipramine
when does full response of serotonergic antidep occur
generally 3 months
anxiolytics/hypnotics
bzd (loraz, alprazolam, clonazepam, diazepam), hydroxyzine, propranolol, pregabalin for GAD (anticonvulsant)
avoid bzd with?
opioids –> increased mortalityw
ntm promoting sleep
gaba
wakefulness promoting ntm
ne, da, ach, histamine, orexin
preferred benzos for anxiety
lorazepam, alprazolam, diazepam, clonazepam
insomnia disorder definition
at least 3 nights per week, at least 3 months
bzd moa
potentiates gaba
bzd se
sedation, drowsiness, amnesia, muscle weakness
preferred bzd for elderly
lorazepam (shorter half life than diazepam)
z hypnotics moa
binds to bzd binding sites with gamma and a1 subunits, causing sedation
z hypnotics se
taste disturbance (zopiclone)
antihistamine se
anticholinergic effects -> urinary retention, prostatic hypertrophy, angle closure glaucoma
antihistamine examples
hydroxyzine, promethazine
lemborexant moa
ox1 and ox2 orexin receptor antagonist
lemborexant se
somnolence, nightmare
lemborexant contraindicated in
NARCOLEPSY, severe hepatic impairment, strong cyp3a inhibition/induction
trazodone moa
inhibit 5ht2a, h1, alpha 1 receptors
trazodone se
sedation, orthostatic hypot, priapism??
precautions for bzd/z-hypnotics
respiratory depression
myasthenia gravis
acute narrow angle glaucoma
acute pulmonary insufficiency