Image from Jim Lock's Cath Book 1987
(Diagnostic and Interventional Catheterization in Congenital Heart Disease.
James E. Lock, John F. Keane, Kenneth E. Fellows First edition 1987. Marinus Nijhoff Publishing, Boston, MA)
My first choice for LPA is just not to put any curves in the wire. But, you may need these wire shapes to enter "postop. LPAs".