Further Inpatient Care
- Admit all patients with significant signs and symptoms of thallium toxicity.
- Initially measure thallium concentrations in the urine 3 times per week to confirm a decreasing trend. Prussian blue treatment should be continued until the 24-hour urine thallium concentration returns to the reference range (0-5 mcg/d).[20]
- Thallotoxicosis also is associated with a severe form of stomatitis; thus, monitor mouth hygiene closely. Shaving the patient's head may reduce the stress induced by hair loss and improve the patient's morale.
- Physical therapy may be instituted to prevent development of muscle contractures.
Further Outpatient Care
- Patients with unintentional intoxication who are asymptomatic with a minimal increase in urine thallium level may be discharged with close follow-up care.
- Patients with intentional ingestions should have a psychiatric evaluation before discharge from the hospital.
Transfer
- Consider transferring patients with severe symptomatology if a medical toxicologist is not readily available.
Deterrence/Prevention
- Regular follow-up care is recommended for persons with known thallium exposure.
Complications
- Prolonged neurologic damage may persist if detoxification therapy is delayed. Patients have demonstrated persistent signs and symptoms of peripheral neuropathy at least 6 years after intoxication. Reports or persistent findings most commonly involve the feet and lower extremities.
- Cases of persistent agitation, aggression, personality changes, depression, and other psychiatric symptoms have been reported following thallium exposure.
Prognosis
- If recognized and treated early, thallium intoxication carries a favorable prognosis; however, the course of recovery may be lengthy.
Patient Education
- For excellent patient education resources, visit eMedicine's Poisoning Center and Poisoning - First Aid and Emergency Center. Also, see eMedicine's patient education articles Poisoning and Activated Charcoal.
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