What is the purpose of the studies mentioned in the context?
The purpose of the studies mentioned in the context is to investigate the relationship between the duration of atrial fibrillation monitored by anti-tachycardia pacemakers and the risk of arterial embolic events in patients suffering from bradycardia and atrial fibrillation. The studies also aim to assess the effectiveness of continuous monitoring of atrial fibrillation in predicting long-term mortality outcomes and stroke risk in patients with permanent pacemakers and cardiac resynchronization therapy.