[Acute organophosphate poisoning after spraying against dog fleas]

A case of moderate organophosphate intoxication in a 49 year-old male who sprayed against dog-fleas in his home is presented. The patient had symptoms of cholinergic excess, presenting as gastrointestinal hyperactivity, salivation, sweating, muscle fasciculations and confusion after in-door spraying with windows and doors kept closed. He recovered after 4 mg of atropine. S-cholinesterase was 3900 U/l (normal range 3800-10,000 U/l) measured with an activity assay, and increased to 6700 U/l the following day.