ST. PAUL, Minn.--(BUSINESS WIRE)--Transoma Medical, manufacturer of Sleuth, the first wireless, automated implantable cardiac monitoring system has now received FDA marketing clearance on its second-generation product, Sleuth AT™ (Advanced Trending) Cardiac Monitoring System. The Sleuth products offer physicians the ability to diagnose patients with recurrent, unexplained fainting and abnormal heart rhythms quickly with its virtually unlimited memory capacity and hands-free downloading for the patient, while minimizing paperwork and practice workload.