Determining blockage with blood pressure and ultrasound. An artery is partially blocked.
Diagnostic measurements are performed when the patient, and more importantly the artery, is
horizontal. In the region just before the blockage the blood pressure is 13,000 N/m² and an ultrasound
shows that the blood is moving at 28 cm/s. In the region with the blockage, the blood pressure is 12,500
N/m². What percentage of the artery's cross-sectional area is blocked? Show all of your work. A proper,
full credit, solution begins with the equation(s) and any necessary manipulations. Then numbers, with
units, are plugged in. An explanation is also provided - good enough that someone else can understand
your solution.