A 12-year-old boy presents to the emergency room with difficulty breathing after several days of severe sore throat. Further history reveals that his family immigrated recently from Eastern Europe and he has never previously seen a doctor. Physical exam shows cervical lymphadenopathy with extensive neck edema as well as the finding shown in the image provided. You suspect a bacteria that causes the disease by producing an AB type exotoxin. Which of the following is the proper medium to culture the most likely cause of this infection?
AThayer-Martin Agar
BCharcoal Yeast Agar
CTellurite Agar
DEaton's Agar
EBordet-Gengou Agar
During a thoracotomy procedure, a surgeon needs to access the posterior mediastinum. Which of the following structures forms the anterior boundary of the posterior mediastinum?
ADescending thoracic aorta
BPericardial sac
CAzygos vein
DThoracic vertebrae
ESternum
A 14-year-old boy is brought to the emergency department because of acute left-sided chest pain and dyspnea following a motor vehicle accident. His pulse is 122/min and blood pressure is 85/45 mm Hg. Physical examination shows distended neck veins and tracheal displacement to the right side. The left chest is hyperresonant to percussion and there are decreased breath sounds. This patient would most benefit from needle insertion at which of the following anatomical sites?
A5th left intercostal space along the midclavicular line
B8th left intercostal space along the posterior axillary line
C2nd left intercostal space along the midclavicular line
DSubxiphoid space in the left sternocostal margin
E5th left intercostal space along the midaxillary line
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