Two years after a 70-year-old retired construction worker became the first enrollee in the Fix Heart Failure 5 (FIX-HF-5) study by being implanted with the Optimizer III device from Impulse Dynamics (Orangeburg, New York), the company last month reported completion of patient enrollment in the trial. The first patient was implanted with the device at St. Joseph’s Hospital (Atlanta) in April 2005.