Anti-psychotics Flashcards
Mesocortical
Cognitive and negative symptoms
Nigrostriatal
SN to striatum
Basal ganglia motor loop
-> extra pyrimidal side effects
Tuberoinfundibular
Arcuate nucleus to infundibular pathway
Prolactin secretion from ant. Pit.
-> hyperprolactinemia
Antipsychotics Mechanism of action
Competitive antagonism of D2 receptors Post synaptic Antagonise mesolimbic and mesocortical -> positive effects Also nigrostriatal and tuberoinfundibular -> side effects Also block -muscarinic -histaminergic -a adrenergics
Baseline investigations
ECG weight and height BP FBC U and E LFT prolactin Glucose Fasting lipids
Examples of typical antipsychotics
Chlorpromazine
Fluphenazine
Flupentixol
Haloperidol
Examples of atypical antipsychotics
Aripiprazole Amisulpride Olanzipine Quetiapine Risperidone Clozapine
Neurological side effects of typical antipsychotics
Neuroepileptic syndrome EPSE's -Parkinson motor symptoms -acute dystonia * oculogyric crisis -akathisia -tardiness dyskinesia Decreased seizure threshold Sedation
Neuroepileptic syndrome
0.07-0.2% per year Hyperthermia Muscle rigidity Confusion Tachycardia Tremor Raised CK Decreased pH
Cardiac side effects of typical antipsychotics
Long QT
Arrhythmias
Myocarditis
Sudden death
Other side effects of typical antipsychotics
Decreased BP Hypersensitivity, liver, bone marrow, skin Hyperprolactinemia Apathy Confusion Depression Muscarinic A1 adrenoceptor
Side effects of atypical antipsychotics
Sedation *olanzipine, clozapine Weight gain *olanzapine, clozapine Increased TG's Proglycaemia Hyperprolactinemia Sexual dysfunction
Metabolic syndrome
Central obesity Insulin resistance Impaired glucose regulation Hypertension Increased TG's Increased LDL
Clozapine specific side effects
Agranulocytosis
Myocarditis
Cardiomyopathy
Orthostatic hypertension
NICE guidelines
1st line -> atypical or typical-> patient preference
2nd line-> a different one or two together
3rd line-> clozapine
Continue 1-2 years post recovery