Definition: Given an abstract, indicate which of the provided candidate titles (Option1 and Option2) best describes it (respond with the text of the title, not option1/2).
Input: Abstract: Severe aortic regurgitation developed in three patients after aortic valve replacement within six months due to long sutures prolapsing across the "annulus" of Bjork-Shiley prosthesis. At reoperation the offending sutures were trimmed or tucked back to the aortic wall to eliminate aortic regurgitation. Prolapse of unravelled knots may be the likely cause. Everting the sewing skirt during the first replacement may prevent this complication.
Which is the apt title for the abstract? option1: Bjork-Shiley valve malfunction by prolapsed sutures. option2: Long-term stabilization in the incus interposition technique.
Output:
Bjork-Shiley valve malfunction by prolapsed sutures.