Final answer:
The vessel studied in a Doppler study on a patient with median arcuate ligament syndrome is the Superior Mesenteric Vein (SMV).
Step-by-step explanation:
The vessel that you would be studying during a Doppler study on a patient with median arcuate ligament syndrome is the Superior Mesenteric Vein (SMV).
In the abdominal aorta, the Superior Mesenteric Vein drains deoxygenated blood from the small intestine, ascending and transverse colon, and a portion of the stomach. This vein plays a crucial role in transporting blood away from the intestines and towards the liver, where it can be filtered and detoxified.
Therefore, when conducting a Doppler study, you would focus on examining the blood flow and velocity within the Superior Mesenteric Vein to assess for any abnormalities or blockages caused by the median arcuate ligament syndrome.