A 26-year-old female seeks preconception counseling. She has a history of mitral stenosis and underwent mitral valve replacement with a tilting-disc mechanical prosthesis 5 years ago. What is the most important consideration regarding her pregnancy planning?
a) Monitoring for thromboembolic events
b) Adjusting anticoagulation therapy
c) Assessing valve function and hemodynamics
d) Evaluating for valve regurgitation
