Q. A 32-year-old man is brought to the emergency department by ambulance after being involved in a motor vehicle accident. He has multiple injuries, including rib fractures on the left side. His vital signs are as follows: temperature 98.7°F (37°C), blood pressure 85/45 mmHg, heart rate 140 beats/min, respiratory rate 35 breaths/min, and oxygen saturation 80% on room air. The patient appears to be in significant distress. Chest Xray shows trachea that is deviated to the right and loss of the left lung markings. Upon percussion of his left chest, there is hyperresonance noted. What is the most likely diagnosis for this patient's symptoms?