coronary, heart
gastric
quadruple, triple

perform
undergo

operation, surgery
coronary bypass surgery

build

along a/the bypass
She was speeding along the bypass, thinking about other things.

around a/the bypass, round a/the bypass (esp. BrE)
We drove around the bypass to the airport.
They're building a new bypass around the town.

on a/the bypass
the traffic on the bypass