Why a shunt instead of a stint?

A shunt is typically used to redirect fluid flow in the body, such as in cases of hydrocephalus or to relieve pressure in areas like the brain or heart, whereas a stent is used to keep a passage open, like in blood vessels. Shunts are often employed when there is a need to bypass an obstruction or to manage excess fluid, while stents are primarily for maintaining vessel patency. The choice between a shunt and a stent depends on the specific medical condition being treated and the desired outcome.