Which groundbreaking medical product, introduced in 2001, used advanced algorithms to continuously monitor heart rhythm and deliver electrical therapy for heart failure patients?

In the world of medical product development, some innovations stand out for their transformative impact on patient care. This poll tests your knowledge about one of the most significant medical device breakthroughs of the early 2000s that revolutionized cardiac care. The product in question dramatically changed treatment approaches for a common heart condition and became one of the most successful medical devices in history, with over 2 million units implanted worldwide.

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Medtronic's CRT-D (Cardiac Resynchronization Therapy Defibrillator)
Abbott's MitraClip Transcatheter Mitral Valve Repair System
Boston Scientific's Watchman Left Atrial Appendage Closure Device
Edwards Lifesciences' SAPIEN Transcatheter Heart Valve