[Answered]: A 38-year-old man with acute onset of shortness…

A 38-year-old man with acute onset of shortness of breath is being evaluated in the emergency department. Your differential diagnosis is pleural effusion versus pneumothorax. Which of the following physical findings will best help differentiate between these diagnoses? Respiratory rate of 33 breaths per minute Agitation due to respiratory distress Quality of breath sounds Dullness to percussion over the affected hemithorax Cough and fever