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Serotonin syndrome
SAMIR EL ANSARY
https://www.facebook.com/groups/1451610115129555/#!/groups/145
1610115129555/
Wellcome in our new group ..... Dr.SAMIR EL ANSARY
Case: I just want to die
• 45yo male
• OD on paxil, gravol,
ibuprofen tonight
• Smoked some crack
• Recent abstinence from
EtOH
• Headache, fever X
1week
• HR125 sinus
• BP 165/105
• Temp 38.0
• RR20, sats 95%
• C/S normal
• Agitation
• Pupils 6 mm
• Hyperreflexic, clonus
• Tremulous
• Very diaphoretic
• Neck stiff
• No bowel sounds
Case Questions
• Is this serotonin syndrome?
• What is the differential dx?
• What tests should be done?
• What are the main treatments of serotonin
syndrome?
• Is there any evidence for the use of
cyproheptidine?
What is Serotonin?
• Neurotransmitter
• Mood, personality,
sleep, sex, motor, temp,
pain functions
• Very complex
• 14 receptors
• Excitatory and
inhibitory functions
What is Serotonin Syndrome?
• Serotonin syndrome is a constellation of
findings related to excessive stimulation of
serotonin receptors and is manifested by
cognitive, autonomic, and neuromuscular
abnormalities
CAN you diagnosis serotonin syndrome?
C
COGNITIVE CHANGES:
Agitation, confusion, euphoria, insomnia,
hypomania, hallucinations
A
AUTONOMIC CHANGES:
Tachycardia, HTN, fever, diaphoresis,
mydriasis, arrythmias, tachypnea
N
NEUROMUSCULAR CHANGES:
Tremor, hyperreflexia, clonus, ataxia,
incoordination, seizures
Sternbach’s Criteria
• Addition or increased dose of a known serotonergic
agent
• At least three of the C.A.N. criteria
• Other etiologies excluded
– Withdrawl, sympathomimetics, anticholinergics, CNS
infections, neuroleptic malignant syndrome
• No neuroleptics that have been started or increased
prior to the onset of symptoms
What causes serotonin syndrome?
• SSRIs
• SNRIs
• MAOIs
• Cocaine
• Amphetamines
• LSD
• Lithium
• Wellbutrin
• And many more!!
How is Seritonin Syndrome Managed?
• Supportive Care
• Temperature control
• Benzodiazepines
• Fluids • Other therapies
– Cyprohepatadine
– Beta – blockers
– Chlorpromazine
– Dantrolene
What is Cyproheptadine?
• Antihistamine with anticholinergic and
antiserotonergic properties
• Blocks 5HT1a and 5HT2 receptors
• Used as antihistamine or for appetite
stimulant in anorexia
• Recommended dosage: 4 mg po tid
• No intravenous formulation
Does Cyproheptadine work?
DRUG DEATHS
Cyproheptadine 5 mg/kg 5/5
Cyproheptadine 10 mg/kg 0/5
Dantrolene 20 mg/kg 6/6
Propranolol 10 mg/kg 5/5
Chlorpromazine 20 mg/kg 6/6
Chlorpromazine 40 mg/kg 0/5
Does Cyproheptadine work?
–Case report
– Seritonin syndrome of moderate severity
– Symptoms subsided 30 min after a 4 mg po dose
– Dose repeated in 3hrs for recurrence of symptoms
Does Cyproheptadine work?
–Case report
– Severe serotonin syndrome
– Cyproheptadine 8 mg po
– Level of consciousness promptly improved,
hypertonia resolved, temperature normalized
Does Cyproheptadine work?
–Case report
– Moderate serotonin syndrome
– Treated with cyproheptadine 8 mg po with no
effect, repeat dose at 8 hours with no effect
– Chlorpromazine 50 mg im and symptoms
improved steadily over next 2hrs
Does Cyproheptadine work?
• McDaniel. Ann Pharmacoltherapy 2001.
–Case series of 4 patients
– All mild to moderate serotonin syndromes
– Dosing: 8 mg po and repeat q 8hr
– Responses seen within hours
– No serious side – effects noted (some
anticholinergic effects)
Does Cyproheptadine work?
–Case series of 5 patients
– Generally moderate severities
– Initial dose 4-8 mg po
– A few got subsequent doses of 4 mg
– Responses seen within 1-2 hours
– No serious complicated reported
Does Cyproheptadine work?
• May be
• VERY little literature
• Appears effective
• Appears safe
• Probably not much down side to trying
? Other treatments for Serotonin
Syndrome
• Chlorpromazine
• Propranolol
• Dantrolene
https://www.facebook.com/groups/1451610115129555/#!/groups/145
1610115129555/
Wellcome in our new group ..... Dr.SAMIR EL ANSARY
GOOD LUCK
SAMIR EL ANSARY
ICU PROFESSOR
AIN SHAMS
CAIRO
elansarysamir@yahoo.com

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Serotonin syndrome 2

  • 3. Case: I just want to die • 45yo male • OD on paxil, gravol, ibuprofen tonight • Smoked some crack • Recent abstinence from EtOH • Headache, fever X 1week • HR125 sinus • BP 165/105 • Temp 38.0 • RR20, sats 95% • C/S normal • Agitation • Pupils 6 mm • Hyperreflexic, clonus • Tremulous • Very diaphoretic • Neck stiff • No bowel sounds
  • 4. Case Questions • Is this serotonin syndrome? • What is the differential dx? • What tests should be done? • What are the main treatments of serotonin syndrome? • Is there any evidence for the use of cyproheptidine?
  • 5. What is Serotonin? • Neurotransmitter • Mood, personality, sleep, sex, motor, temp, pain functions • Very complex • 14 receptors • Excitatory and inhibitory functions
  • 6. What is Serotonin Syndrome? • Serotonin syndrome is a constellation of findings related to excessive stimulation of serotonin receptors and is manifested by cognitive, autonomic, and neuromuscular abnormalities
  • 7. CAN you diagnosis serotonin syndrome? C COGNITIVE CHANGES: Agitation, confusion, euphoria, insomnia, hypomania, hallucinations A AUTONOMIC CHANGES: Tachycardia, HTN, fever, diaphoresis, mydriasis, arrythmias, tachypnea N NEUROMUSCULAR CHANGES: Tremor, hyperreflexia, clonus, ataxia, incoordination, seizures
  • 8. Sternbach’s Criteria • Addition or increased dose of a known serotonergic agent • At least three of the C.A.N. criteria • Other etiologies excluded – Withdrawl, sympathomimetics, anticholinergics, CNS infections, neuroleptic malignant syndrome • No neuroleptics that have been started or increased prior to the onset of symptoms
  • 9. What causes serotonin syndrome? • SSRIs • SNRIs • MAOIs • Cocaine • Amphetamines • LSD • Lithium • Wellbutrin • And many more!!
  • 10. How is Seritonin Syndrome Managed? • Supportive Care • Temperature control • Benzodiazepines • Fluids • Other therapies – Cyprohepatadine – Beta – blockers – Chlorpromazine – Dantrolene
  • 11. What is Cyproheptadine? • Antihistamine with anticholinergic and antiserotonergic properties • Blocks 5HT1a and 5HT2 receptors • Used as antihistamine or for appetite stimulant in anorexia • Recommended dosage: 4 mg po tid • No intravenous formulation
  • 12. Does Cyproheptadine work? DRUG DEATHS Cyproheptadine 5 mg/kg 5/5 Cyproheptadine 10 mg/kg 0/5 Dantrolene 20 mg/kg 6/6 Propranolol 10 mg/kg 5/5 Chlorpromazine 20 mg/kg 6/6 Chlorpromazine 40 mg/kg 0/5
  • 13. Does Cyproheptadine work? –Case report – Seritonin syndrome of moderate severity – Symptoms subsided 30 min after a 4 mg po dose – Dose repeated in 3hrs for recurrence of symptoms
  • 14. Does Cyproheptadine work? –Case report – Severe serotonin syndrome – Cyproheptadine 8 mg po – Level of consciousness promptly improved, hypertonia resolved, temperature normalized
  • 15. Does Cyproheptadine work? –Case report – Moderate serotonin syndrome – Treated with cyproheptadine 8 mg po with no effect, repeat dose at 8 hours with no effect – Chlorpromazine 50 mg im and symptoms improved steadily over next 2hrs
  • 16. Does Cyproheptadine work? • McDaniel. Ann Pharmacoltherapy 2001. –Case series of 4 patients – All mild to moderate serotonin syndromes – Dosing: 8 mg po and repeat q 8hr – Responses seen within hours – No serious side – effects noted (some anticholinergic effects)
  • 17. Does Cyproheptadine work? –Case series of 5 patients – Generally moderate severities – Initial dose 4-8 mg po – A few got subsequent doses of 4 mg – Responses seen within 1-2 hours – No serious complicated reported
  • 18. Does Cyproheptadine work? • May be • VERY little literature • Appears effective • Appears safe • Probably not much down side to trying
  • 19. ? Other treatments for Serotonin Syndrome • Chlorpromazine • Propranolol • Dantrolene
  • 21. GOOD LUCK SAMIR EL ANSARY ICU PROFESSOR AIN SHAMS CAIRO elansarysamir@yahoo.com