title: Unusual electrocardiographic changes in spontaneous pneumothorax.
abstract: A young woman with spontaneous left pneumothorax had a phasic voltage alternation of her electrocardiogram that resolved with expansion of the lung. Likely explanations for this phenomenon are a respiratory dependent change in cardiac anatomy and a change in the volume conductor with respiration.
mesh_terms: D000328:Adult; D004562:Electrocardiography; D005260:Female; D006801:Humans; D007440:Intubation; D011013:Pneumonectomy; D011030:Pneumothorax / Q000175:diagnosis* / Q000601:surgery; D013902:Radiography, Thoracic; D012008:Recurrence