A multidisciplinary approach to accidental inhalational ammonia injury: A case report

Abstract

IntroductionAmmonia is a highly toxic irritant gas, and its toxicity usually occurs from occupational exposure. Most are unintentional toxicity. It causes tissue damage via exothermic reaction with body tissues causing liquefactive necrosis. Presentation depends on the level and duration of exposure. Management is supportive and its antidote is not available yet.Presentation of caseWe report a case of a 22-year-old male with accidental workplace exposure from coolant damage and leakage. He had altered mental status with visible injury to the nasal cavity, and ulcerated laryngeal mucosa with asymmetric vocal cords on bronchoscopy. Computed tomography showed right lower lobe consolidations. A muti-disciplinary approach and prompt management with respiratory support along with inhaled steroids and bronchodilators, antibiotics, electrolyte replacement, analgesics, and supportive eye and oral treatments were initiated. He had to be managed with a high-flow nasal cannula with subsequent tapering of the oxygen supplementation with titration.DiscussionInhalation injury due to ammonia toxicity can have varied presentations from mild to severe life-threatening respiratory distress and neurological deterioration. Complications can range from upper airway edema to pulmonary edema. Most of these are usual findings except for the presence of pneumothorax. It could be due to the pre-existing lung status or oxygen therapy but the literature is inadequate.ConclusionAmmonia inhalational injury may be associated with pneumothorax. It is important to have a multi-disciplinary approach and in-hospital management of ammonia toxicity as well as to raise awareness regarding the work environment and timely recognition of the possible occupational health hazards.