Bruce, 1968Examination on admission showed epigastric tenderness and guarding. The liver edge was just palpable below the costal margin. There was no evidence of pre-existing cardiac, pulmonary, or renal disease. Shortly after admission gastric lavage was performed and no solid Weedol particles were visible in the aspirate. Forced diuresis was begun.Next day he complained of anterior chest tightness, frontal headache, and photophobia. Chest auscultation revealed generalized bilateral sibilant rhonchi. The abdominal pain disappeared by the eighth day and tenderness by the tenth day. The liver edge remained palpable throughout. He remained free of oral and pharyngeal ulceration. Clinical examination of the chest showed disappearance of rhonchi by the tenth day and there was no evidence of pulmonary hypertension at any time. The temperature rose on only one occasion to 99°F. (37.2°C.). A five-day course of intramuscular penicillin was started on admission and was followed by a five-day course of prednisolone, begun on the fifth day.Investigations.-Daily chest x-ray films and electrocardiograms performed from time of admission showed no abnormality. The haemoglobin and absolute values were found to be normal. The white cell count was 6,650/cu. mm. on admission and 13,500/cu. mm. on the twelfth day. The E.S.R., blood urea, urine urea, serum electrolytes, serum bicarbonate, standard liver function tests, and arterial blood gas values were all persistently normal. Occult blood was not found in the stools. Creatinine clearance just before discharge was 58 ml./min.Forced diuresis was performed by the method of Linton, Luke, Speirs, and Kennedy (1964) and continued for 24 hours. Throughout the forced diuresis two-hourly aliquots of urine were collected and blood samples were obtained at intervals. The concentrations of paraquat in each of these specimens and in one specimen of gastric aspirate were determined by the method of Daniel and Gag. (1966). The lower limit of sensitivity by this method is 10 pg. of paraquat. This quantitative method is efficient but time-consuming. The urine cell counts were performed by the method of McGeachie and Kennedy (1963).