Name high-risk anatomic features that complicate PCI.

Name high-risk anatomic features that complicate PCI.

• A. Left main disease, bifurcation lesions, heavily calcified lesions, chronic total occlusions, and multivessel disease.
• B. Single-vessel disease with no calcification.
• C. Left heart disease only.
• D. No risk features.

Answer: (C)

High-risk features that complicate PCI are specific patterns in the coronary arteries that raise technical difficulty and risk during the procedure. Left main disease is particularly challenging because it involves a large myocardial territory and often requires careful bifurcation management to avoid compromising the main or side branch. Bifurcation lesions demand complex strategies to treat the main vessel while protecting or stenting the side branch, increasing technical demands and risk of side-branch occlusion. Heavily calcified plaques resist stent expansion and may require plaque modification techniques, such as atherectomy, to achieve adequate stent apposition, with greater risk of vessel injury or embolization. Chronic total occlusions require specialized approaches and longer, more complex procedures with higher chances of incomplete revascularization and increased radiation and contrast exposure. Multivessel disease implies multiple target lesions, extending procedure time and cumulative risk. In contrast, left heart disease by itself does not define coronary anatomic complexity for PCI, so it does not capture the high-risk features that truly complicate the procedure.

High-risk features that complicate PCI are specific patterns in the coronary arteries that raise technical difficulty and risk during the procedure. Left main disease is particularly challenging because it involves a large myocardial territory and often requires careful bifurcation management to avoid compromising the main or side branch. Bifurcation lesions demand complex strategies to treat the main vessel while protecting or stenting the side branch, increasing technical demands and risk of side-branch occlusion. Heavily calcified plaques resist stent expansion and may require plaque modification techniques, such as atherectomy, to achieve adequate stent apposition, with greater risk of vessel injury or embolization. Chronic total occlusions require specialized approaches and longer, more complex procedures with higher chances of incomplete revascularization and increased radiation and contrast exposure. Multivessel disease implies multiple target lesions, extending procedure time and cumulative risk. In contrast, left heart disease by itself does not define coronary anatomic complexity for PCI, so it does not capture the high-risk features that truly complicate the procedure.