What is a risk with ostial lesions?

What is a risk with ostial lesions?

• A. High risk of aortic or vessel dissection
• B. High risk of heart failure
• C. High risk of restenosis only
• D. No special risk

Answer: (A)

Ostial lesions sit at the origin of a coronary artery where it joins the aorta, so any catheter manipulation or balloon/stent deployment occurs right at the aortic-coronary junction. This proximity makes iatrogenic dissection of the aorta or the vessel at the ostium a major, procedure-specific risk. A tear can propagate into the aorta or along the coronary ostium, potentially causing abrupt flow limitation and serious complications. Restenosis, while still possible, is not unique to ostial lesions and is less the defining risk with modern stents. No special risk is not accurate because dissection risk is a real and important concern with these lesions.

Ostial lesions sit at the origin of a coronary artery where it joins the aorta, so any catheter manipulation or balloon/stent deployment occurs right at the aortic-coronary junction. This proximity makes iatrogenic dissection of the aorta or the vessel at the ostium a major, procedure-specific risk. A tear can propagate into the aorta or along the coronary ostium, potentially causing abrupt flow limitation and serious complications. Restenosis, while still possible, is not unique to ostial lesions and is less the defining risk with modern stents. No special risk is not accurate because dissection risk is a real and important concern with these lesions.