What is the normal velocity range for the superior mesenteric artery (SMA)?

The superior mesenteric artery (SMA) is a major vessel that supplies blood to the intestines, and its normal velocity range is indicative of healthy blood flow. A velocity range of 110-177 cm/sec is considered normal for the SMA. This range reflects optimal hemodynamic conditions without significant stenosis or blockage in the artery.

When assessing the vascular health of the SMA through Doppler ultrasound, it is essential to ensure that blood flow velocities fall within this normal range, as deviations may suggest pathology. For example, if the blood flow is too slow, it could indicate conditions such as stenosis, while significantly higher velocities may indicate turbulence associated with narrowing or obstruction.

The other options provided indicate either significantly higher or lower velocities that do not align with the expected normal physiological parameters for the SMA. Therefore, identifying the correct normal range helps in diagnosing potential vascular issues effectively.