A 70-year-old man was brought to the Emergency Department by…
A 70-year-old man was brought to the Emergency Department by ambulance with sudden onset of severe, chest pain, described as tearing, which radiates down the back for the past 25 min. He admits to a long-standing history of hypertension that has not been treated effectively for the past 25 years. He states that he feels short of breath, is beginning to feel dizzy, and his legs are becoming weak. His vital signs are as follows: RR: 24/min; HR: 110/min; BP: 210/152 mm Hg in right arm and 214/156 mm Hg in the left arm. He is afebrile.Which of the following conditions is the most likely diagnosis for this patient?