What are the four hallmarks of tetralogy of Fallot? What characteristic of tetralogy of Fallot determines the severity of the symptoms? What is the Blalock-Taussig shunt? What is the classic appearance of tetralogy of Fallot on CXR? What treatment is appropriate for tetralogy of Fallot? Book traversal links for Tetralogy of Fallot ‹ When does hypoplastic left heart syndrome manifest? Up What are the four hallmarks of tetralogy of Fallot? ›