A large study including both recreational and competitive ath- letes across a large age range noted that SCA in women during athletic events was 1 in 20 of that in men.S10.6-21 A large literature review from 1980 to 1992 dem- onstrated that women accounted for 70% of re- corded cases of cardiovascular medication related This is consistent with QT interval dif- ferences among men and women. A retrospective anal- ysis of quinidine discontinuation reported a significant difference in discontinuation between men and women (66% versus 84%) largely due to prolonged QT.S10.6-23 A study of catheter ablation for VT reported that overall outcome was similar between men and women.S10.6-24 The only sex difference was the greater probability of women having RVOT VT and a greater probability of men having LV outflow tract VT. 10.7. Medication-Induced Arrhythmias Recommendations for Medication-Induced Arrhythmias References that support the recommendations are summarized in Online Data Supplements 52 and 53. 