Complex sentence: The transjugular intrahepatic portosystemic shunt is similar to a surgical shunt: it accomplishes the same goal but has a lower procedure-related mortality--a factor which has led to a growth in its popularity.
Split into simpler sentences: The transjugular intrahepatic portosystemic shunt (TIPS) is similar to a surgical shunt. It accomplishes the same goal but has a lower procedure-related mortality, which has led to a growth in its popularity.