Which presentation best indicates aortic dissection?

Which presentation best indicates aortic dissection?

• A. tearing chest pain + BP difference in arms = 911 / ER
• B. Fever + stiff neck + altered mental status
• C. Saddle anesthesia + urinary retention + bilateral leg weakness
• D. Sudden severe headache + Horner's

Answer: (A)

The key idea is recognizing acute aortic dissection from its hallmark signs: sudden, severe chest pain that feels tearing or ripping, often radiating to the back, and a difference in blood pressure between the arms due to involvement of the aorta or its branches. This combination is highly suggestive of a dissection and represents a medical emergency requiring immediate imaging and urgent management. Other options point to different emergencies. Fever with stiff neck suggests infection such as meningitis; saddle anesthesia with urinary retention and bilateral leg weakness points to cauda equina syndrome; a sudden severe headache with Horner’s syndrome can be seen with carotid or other cervical artery problems or subarachnoid hemorrhage, not the classic presentation of an aortic dissection.

The key idea is recognizing acute aortic dissection from its hallmark signs: sudden, severe chest pain that feels tearing or ripping, often radiating to the back, and a difference in blood pressure between the arms due to involvement of the aorta or its branches. This combination is highly suggestive of a dissection and represents a medical emergency requiring immediate imaging and urgent management.

Other options point to different emergencies. Fever with stiff neck suggests infection such as meningitis; saddle anesthesia with urinary retention and bilateral leg weakness points to cauda equina syndrome; a sudden severe headache with Horner’s syndrome can be seen with carotid or other cervical artery problems or subarachnoid hemorrhage, not the classic presentation of an aortic dissection.