Psychiatric Emergencies Flashcards
What causes an acute dystonic reaction?
Starting new antipsychotic medication (occurs within 1 week), sharply increasing dose or decreasing dose.
What happens in an acute dystonic reaction?
Sustained, painful muscle spasm producing twisting movements and abnormal posture. Torticollis of head and neck muscles, grimacing, occulogyric spasm. Fluctuates and lasts minutes to hours untreated.
How do you treat an acute dystonic reaction?
Discontinue medication and give IM anticholinergic Procyclidine
What is the main cause of Lithium toxicity?
Dehydration while taking Lithium
How does Lithium toxicity present?
Ataxia, myoclonic jerks, hyperreflexia, agitation, confusion and stupor.
Complications include liver toxicity and cardiac arrhythmias,
How do you treat Lithium toxicity?
Stop Lithium
IV fluids
Haemodialysis
What is Neuroleptic Malignant Syndrome?
Life threatening idiosyncratic reaction to antipsychotics/antidepressants/lithium.
What is seen on bloods in NMS?
Raised CK above 2000 units due to rhabdomyolysis
What are the symptoms of Neuroleptic Malignant Syndrome?
Autonomic dysfunction: High BP Hyperthermia Altered Consciousness and mental state Muscle Rigidity/Clonus Tachycardia Tachypnoea Tremor Incontinence/ Retention Metabolic Acidosis
What are the risk factors for Neuroleptic Malignant Syndrome?
Increase in ambient temperature Dehydration Change in antipsychotic dosing (rapid) Withdrawal of antipsychotic medication Organic brain disease
What is the cause of death of Neuroleptic Malignant Syndrome?
Respiratory failure
CV collapse
Arrhythmias
DIC
How do you treat Neuroleptic Malignant Syndrome?
ABCD Fluid and Electrolytes Stop new medication IV DANTROLENE or BENZOS or Muscle Relaxants Antipyretics Bromocriptine
What investigations should be done in suspected Neuroleptic Malignant Syndrome?
FBC LFT U and E Ca Phosphate Serum CK Coagulation studies Toxicology CXR LP CT head
How long does Neuroleptic Malignant syndrome last for?
7- 10 days, or up to 21 days if depot antipsychotic.
What causes serotonin syndrome?
Excess SSRIs, or amphetamine, MAOIs, MDMA and Lithium