Conclusion
Cardiac arrest due to TdP in the acquired form of drug-induced LQTS is a rare but potentially catastrophic event. Although fluoroquinolone is well tolerated, and effective, they are associated with various cardiac toxicities. Even though ciprofloxacin is considered to be the safest agent in this class, it may cause QT-interval prolongation, torsade de pointes, and sudden cardiac death, especially in the presence of predisposing factors. This case emphasizes the importance of prevention, early recognition, and treatment of QT-interval prolongation and TdP induced by ciprofloxacin.