Final answer:
More than 80% of aortic dissections present with at least two out of three typical signs: severe chest or back pain, blood pressure differential between arms, and a diminished pulse.
Step-by-step explanation:
The signs of aortic dissections can vary, but over 80% of cases present with at least two out of three common signs. These include: sudden severe chest or back pain, a difference in blood pressure between arms, and a diminished pulse. Sudden severe chest or back pain is often described as a tearing or ripping sensation and is the most common symptom. A blood pressure differential between the arms can arise due to the dissection causing a partial obstruction of blood flow. Finally, a diminished pulse may occur if the dissection involves branches of the aorta leading to the limbs.