<prompt> Answer this question truthfullyWhat is the potential risk associated with fluoroquinolones and how does it relate to the QT interval?  <response>: <reason> What is the potential risk associated with fluoroquinolones and how does it relate to the QT interval? Fluoroquinolones can prolong the QT interval, which predisposes patients to a type of abnormal heart rhythm called Torsades de pointes. 