The commonest valvular lesion in SLE-related cardiac disease is-
High-Yield Explanation
Valvular involvement is the most encountered form of hea disease in systemic lupus erythematosus (SLE). Immunoglobulin and complement deposition in the valvular structure will subsequently lead to Libman-Sacks vegetations, valve thickening, and valve regurgitation. Valvular stenosis is rarely seen.resulting in mitral regurgitation Ref Davidson 23rd edition pg 455