Choking as a cause of negative pressure pulmonary oedema (NPPE) in an older adult

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Abstract

An 86-year-old female presented to the Emergency Department (ED) in respiratory distress after choking on a sandwich at home. Her family had noticed that she had had difficulty during and coughing after swallowing for several months. Her initial chest x-ray showed diffuse alveolar infiltrates in both lungs and blood tests showed normal white cells and C-Reactive Protein (CRP). She was started on intravenous antibiotics for presumed aspiration pneumonia and received 15 L of oxygen. However, the infiltration had dramatically improved, both radiologically and clinically, within 24 hours. She was diagnosed with negative pressure pulmonary oedema (NPPE) type 1 and made a rapid recovery. The Speech and Language Team diagnosed an impaired swallow and advised soft or bite-sized suitable foods. We discussed the ongoing risk of aspiration and long-term feeding options with the patient's family. We agreed on a conservative plan for 'risk feeding', given her frailty and co-morbidities, and began discussions on ceilings of care. This case aims to raise awareness of NPPE so that it can be diagnosed, investigated and treated promptly. Although seen most commonly by intensivists and anaesthetists, it is relevant to those on the acute medical take and geriatricians managing patients with swallowing difficulties.

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