In April 1997, a 35-year-old female pet groomer treated a dog for fleas
by placing the animal in a tub containing water to which was added a concentrated
phosmet solution. During application, the dog shook and sprayed the product
on the exposed hands and arms of the groomer; a nearby open soft drink can,
from which the groomer reported drinking, may have been contaminated. Within
an hour after exposure, she developed skin flushing and irritation, shortness
of breath, chest pain, accelerated heart rate and respiration, abdominal cramping,
and nausea. She sought care at a hospital emergency department, where she
was released without treatment after her clothes were discarded, and she showered
with soap and ethanol. Plasma and red blood cell (RBC) cholinesterase levels
were 4584 U/L (normal: 2900-7100 U/L) and 32 U/g hemoglobin (normal: 24-40
U/g hemoglobin), respectively; however, no baseline or subsequent postexposure
cholinesterase levels were available for comparison. The case-patient had
been a pet groomer for 1 year and did not use personal protective equipment
(PPE) (e.g., gloves, gowns, or goggles). She reported that she regularly applied
insecticides with her bare hands and that her clothing was often wet with
water and flea-control dips or shampoos. Previous exposures had not made her
ill. No analysis of the concentration of the phosmet product was performed.