TY  - JOUR
PY  - 2018//
TI  - 2-Methyl-4-chlorophenoxyacetic acid (MCPA) and bromoxynil herbicide ingestion
JO  - Clinical toxicology (Philadelphia, Pa.)
A1  - Chiew, Angela L.
A1  - Page, Colin B.
A1  - Clancy, David
A1  - Mostafa, Ahmed
A1  - Roberts, Michael S.
A1  - Isbister, Geoffrey K.
SP  - 377
EP  - 380
VL  - 56
IS  - 5
N2  - CONTEXT: Ingestion of bromoxynil and 2-methyl-4-chlorophenoxyacetic acid (MCPA) in combination is associated with high mortality. Toxicity is characterised by hyperthermia and metabolic acidosis. Dialysis is a proposed treatment, but little data exist regarding its effectiveness. CASE DETAILS: Case 1: A 50-year-old female presented 18 h post-ingestion of 200  mL of bromoxynil(200 g/L) and MCPA(200 g/L). She was agitated, tachycardic and tachypnoeic. She was intubated and continuous venovenous haemodiafiltration (CVVHDF) was commenced. She deteriorated, becoming hypotensive, hyperthermic (39.5 °C) and hypercapnic (80 mmHg). She was cooled, paralysed, received CVVHDF for 2d and was extubated on day 4 making a full recovery. Case 2: A 60-year-old male presented 6 h post-ingestion of an unknown amount of bromoxynil (200 g/L) and MCPA (200 g/L). On arrival, he was tachycardic and tachypneic (pCO2 25 mmHg). At 8h post-ingestion he became hyperthermic, hypercapnic and acidotic (pH 7.15), and was intubated, paralysed, cooled and received CVVHDF for 36 h. He was extubated after 42 h and made a full recovery. Bromoxynil and MCPA serum and effluent concentrations were measured. Peak MCPA serum concentrations were 161 µg/ml and 259 µg/ml and peak bromoxynil concentrations were 119 µg/ml and 155 µg/ml in case 1 and 2, respectively. The estimated clearance of both herbicides by CVVHDF was low (<10 mL/min). <br><br>CONCLUSION: CVVHDF did not result in significant clearance of either herbicide but may have assisted with hyperthermia control. Both patients survived with vigorous cooling, paralysis and ventilatory support.<p />  <p>Language: en</p>
LA  - en
SN  - 1556-3650
UR  - http://dx.doi.org/10.1080/15563650.2017.1385790
ID  - ref1
ER  -