system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Six days after falling in the shower, a 75-year-old man with COPD is brought to the emergency department because of progressively worsening left-sided chest pain and shortness of breath. He has smoked one pack of cigarettes daily for 50 years. His temperature is 36.5°C (97.7°F), pulse is 110/min, respirations are 30/min, and blood pressure is 115/58 mm Hg. Pulse oximetry on room air shows an oxygen saturation of 88%. Examination shows dullness to percussion and decreased fremitus over the left lung base. There are faint expiratory wheezes throughout the lungs. An x-ray of the chest is shown. Which of the following is the most likely cause of this patient’s current condition?
assistant
Blood in the pleural space