Thallium toxicity: Difference between revisions
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==Clinical Features== | ==Clinical Features== | ||
===Acute=== | |||
*12 hours: [[Abdominal pain]], [[nausea]], [[vomiting]], [[diarrhea]], [[shock]] | |||
*2-3 days: [[delirium]], [[respiratory failure]], [[seizures]], [[death]] | |||
===Chronic=== | |||
*2-4 weeks: [[peripheral neuropathy]], [[chorea]], [[stomatitis]], hair loss | |||
==Differential Diagnosis== | ==Differential Diagnosis== | ||
Revision as of 06:55, 10 December 2016
Background
- Soft metal used in jewelry and semiconductors
- No longer used as a rodenticide in the US
- Quickly oxidizes with exposure to air
Mechanism of Toxicity
- Unknown: seems to affect various enzyme systems
- Lethal dose 12-15 mg/kg
Clinical Features
Acute
- 12 hours: Abdominal pain, nausea, vomiting, diarrhea, shock
- 2-3 days: delirium, respiratory failure, seizures, death
Chronic
- 2-4 weeks: peripheral neuropathy, chorea, stomatitis, hair loss
Differential Diagnosis
- Aluminum toxicity
- Antimony toxicity
- Arsenic toxicity
- Barium toxicity
- Beryllium toxicity
- Bismuth toxicity
- Boron toxicity
- Cadmium toxicity
- Cesium toxicity
- Chromium toxicity
- Cobalt toxicity
- Copper toxicity
- Gold toxicity
- Iron toxicity
- Lead toxicity
- Lithium toxicity
- Manganese toxicity
- Mercury toxicity
- Nickel toxicity
- Phosphorus toxicity
- Platinum toxicity
- Selenium toxicity
- Silver toxicity
- Thallium toxicity
- Tin toxicity
- Vanadium toxicity
- Zinc toxicity
Evaluation
- Urine thallium concentration >20mcg/L indicates toxicity
- Blood levels are not considered reliable except in large exposures
- Plain films may be useful in acute ingestion because thallium is radiopaque
Management
- Prussian blue is mainstay of therapy in Europe
- Crystal lattice structure binds thallium ions, preventing enterohepatic recycling
- Activated charcoal binds thallium in vitro
- Ipecac can be given in the prehospital setting if given within first few minutes of exposure