In coronary stenting, what is the rationale for dual antiplatelet therapy and how does stent type influence duration?

• A. To prevent stent thrombosis by inhibiting platelet aggregation; drug-eluting stents (DES) generally require 6-12 months of DAPT, while bare-metal stents (BMS) typically require 1-3 months, depending on bleeding risk.
• B. To reduce restenosis by lowering cholesterol; DES requires shorter duration than BMS.
• C. To prevent infection after PCI; duration is the same for DES and BMS.
• D. To manage blood pressure during PCI; stent type doesn't affect DAPT duration.

Answer: (A)