Rheumatology Book

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Baclofen Poisoning

Aka: Baclofen Poisoning, Baclofen Overdose, Baclofen Toxicity
  1. See Also
    1. Baclofen
    2. Antispastic Skeletal Muscle Relaxant
    3. Baclofen Withdrawal
  2. Background
    1. Toxic oral doses
      1. Symptomatic at >150 mg ingestion, and serious complications at ingestions of >300 mg
  3. Findings
    1. Altered Level of Consciousness (to coma)
    2. Respiratory depression
    3. Hypotonia
    4. Hypotension
    5. Hypothermia
    6. Bradycardia
    7. Seizures (to Status Epilepticus)
      1. Present in both Baclofen Overdose and withdrawal
  4. Differential Diagnosis
    1. Baclofen Withdrawal
      1. Both Baclofen Withdrawal as well as Overdose can cause coma and Status Epilepticus
      2. Benzodiazepines are effective in both conditions
      3. Interrogate Intrathecal Baclofen Pump if present
  5. Management
    1. ABC Management
    2. Supportive Care
    3. Seizures
      1. Benzodiazepines (GABA-A active) are most important first-line agents
      2. Consider EEG to evaluate for non-convulsive Status Epilepticus
    4. Other measures
      1. Hemodialysis
        1. May be indicated in End Stage Renal Disease or Acute Kidney Injury
      2. Lumbar Puncture
        1. May be indicated in intrathecal Baclofen Overdose
        2. Withdraw 30 ml CSF
    5. Disposition
      1. Asymptomatic
        1. Observe for 4-6 hours after ingestion and may discharge home if no significant symptoms
      2. Symptomatic
        1. Hospital admission for up to 2-3 days after ingestion if significantly symptomatic
  6. References
    1. Gao and Tomaszewski (2018) Crit Dec Emerg Med 32(9): 28

Baclofen overdose (C0573362)

Concepts Injury or Poisoning (T037)
SnomedCT 296491007
English Baclofen overdose, Baclofen overdose (disorder)
Spanish sobredosis de baclofeno (trastorno), sobredosis de baclofeno
Sources
Derived from the NIH UMLS (Unified Medical Language System)


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