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A 23-year-old man comes to the emergency department with an open wound on his right hand. He states that he got into a bar fight about an hour ago. He appears heavily intoxicated and does not remember the whole situation, but he does recall lying on the ground in front of the bar after the fight. He does not recall any history of injuries but does remember a tetanus shot he received 6 years ago. His temperature is 37°C (98.6°F), pulse is 77/min, and blood pressure is 132/78 mm Hg. Examination shows a soft, nontender abdomen. His joints have no bony deformities and display full range of motion. There is a 4-cm (1.6-in) lesion on his hand with the skin attached only on the ulnar side. The wound, which appears to be partly covered with soil and dirt, is irrigated and debrided by the hospital staff. Minimal erythema and no purulence is observed in the area surrounding the wound. What is the most appropriate next step in management?

A 58-year-old man is brought to the emergency department by his family because of severe upper back pain, which he describes as ripping. The pain started suddenly 1 hour ago while he was watching television. He has hypertension for 13 years, but he is not compliant with his medications. He denies the use of nicotine, alcohol or illicit drugs. His temperature is 36.5°C (97.7°F), the heart rate is 110/min and the blood pressure is 182/81 mm Hg in the right arm and 155/71 mm Hg in the left arm. CT scan of the chest shows an intimal flap limited to the descending aorta. Intravenous opioid analgesia is started. Which of the following is the best next step in the management of this patient condition?