alexa Acute arsenic poisoning treated by intravenous dimercaptosuccinic acid (DMSA) and combined extrarenal epuration techniques.


Journal of Clinical Toxicology

Author(s): Hantson P, Haufroid V, Buchet JP, Mahieu P

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Abstract Arsenic poisoning was diagnosed in a 26-year-old man who had been criminally intoxicated over the last two weeks preceding admission by the surreptitious oral administration of probably 10 g of arsenic trioxide (As2O3). The patient developed severe manifestations of toxic hepatitis and pancreatitis, and thereafter neurological disorders, respiratory distress, acute renal failure, and cardiovascular disturbances. In addition to supportive therapy, extrarenal elimination techniques and chelating agents were used. Dimercaprol (BAL) and dimercaptosuccinic acid (DMSA or succimer) were used simultaneously as arsenic chelating agents for two days, and thereafter DMSA was used alone. DMSA was administered by intravenous (20 mg/kg/d for five days, then 10 mg/kg/d for six days) and intraperitoneal route. Intravenous DMSA infusion was well tolerated and resulted in an increase in arsenic blood concentration immediately after the infusion. Continuous venovenous hemofiltration combined with hemodialysis, and peritoneal dialysis were proposed to enhance arsenic elimination. It was calculated that over an 11-day period 14.5 mg arsenic were eliminated by the urine, 26.7 mg by hemodialysis, 17.8 mg by peritoneal dialysis, and 7.8 mg by continuous venovenous hemofiltration. These amounts appeared negligible with regard to the probable ingested dose. The patient died on day 26 from the consequences of multiple organ failure, with subarachnoid hemorrhage and generalized infection caused by Aspergillus fumigatus.
This article was published in J Toxicol Clin Toxicol and referenced in Journal of Clinical Toxicology

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