After successful trial application by a manufacturer (St. Jude Medical, now part of Abbott), the Federal Joint Committee (G-BA) decided to conduct a co-funded study to create evidence about the measurement and monitoring of pulmonary artery pressure using an implanted sensor called “CardioMEMS™ HF System” to optimize therapy in NYHA III heart failure. The G-BA released a trial guideline defining the key points of the planned study, including type and duration of the study, target population and control intervention.