Antipsychotics Flashcards
MOA of Lithium
inhibits inositol monophosphate, to decrease PIP2, IP3 and DAG
side effects of Lithium
chronic interstitial nephritis
tremor
Nephrogenic DI
Teratotgen
Cardiac abnormalities
Hypothyroidism/ Goiter
worsened psoriasis
acne
leukocytosis
hair thinning
contraindications of Lithium
renal insufficiency
Hypovolemia
Low GFR/ Elderly
Pregnancy
which drugs cause an increase in renal lithium concentrations
thiazides
NSAIDS
ACE inhibitors
which drugs cause a decrease in renal lithium concentrations
Potassium-sparing diuretics
which drugs alter renal lithium levels
Loop Diuretics can cause an increase or decrease in lithium levels
indications of Lithium
Bipolar disorder
acute mania
indications of antipsychotics
positive schizophrenia symptoms
psychosis
mania
bipolar
OCD
Tourette syndrome
Huntington Disease
what do typical (first generation) antipsychotics usually end with
-azine
what do atypical (2nd generation) antipsychotics usually end with
- idone
- apine
what are high potency typical antipsychotics known for
Extrapyramidal symptoms- symptoms affecting the basal ganglia, causing movement disorders:
dystonia: stiffness and spasm
akathisia: restlessness and urge to move
Bradykinesia
Tardive dyskinesia: choreoathetosis, lip-smacking, grimacing
why are extrapyramidal symptoms more pronounced in high potency typical antipsychotics?
D2>A2>5HT>H1
when D2 receptors are antagonized, neurotransmitters won’t be released from the caudate, leading to movement disorders
What are Dopamine antagonist symptoms
Extrapyramidal signs
hyperprolactinemia
galactorrhea
amenorrhea
anti-emetic actions
what are histamine antagonist symptoms
sedation
constipation
what are muscarinic antagonist symptoms
dry mouth
constipation