The symptoms may include tightness in the chest, dyspnea, frothy sputum, and cyanosis. Physical findings may include hypotension, weak, rapid pulse and moist rales. Recovery may be prolonged and relapses are possible. In severe exposures, death due to anoxia may occur within a few hours after onset of pulmonary edema symptoms or following a relapse. Bronchial irritation with cough and frequent attacks of bronchial pneumonia may occur.
Gastrointestinal disturbances are also possible.
Remove from exposure area to fresh air immediately. Perform artificial respiration if necessary. Maintain airway, blood pressure and respiration. Keep warm and at rest. Treat symptomatically and supportively.