Impella Safety Update: Data Supports Pump For Qualified Patients
Updated data from a postmarket study of Abiomed’s Impella RP right-heart pump further supports the device’s safety for a specific patient population.
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In a letter sent 21 May, the US FDA tells physicians the benefits of Abiomed’s Impella RP right-heart circulatory support device outweigh the risks in appropriately selected patients. In February, the agency warned doctors that the postmarket study of the device showed worse survival than the premarket clinical trial.
FDA sent a letter to physicians alerting them to interim results from the post-approval study of Abiomed’s Impella RP right-heart pump system that suggest a higher mortality rate for patients than what was observed in pre-market studies. FDA believes the benefits of the Impella RP system continue to outweigh the risks for patients covered by the currently approved indication; it emphasizes to physicians the importance of early placement of Impella RP, and the importance of following proper inclusion and exclusion criteria when selecting patients. The results cited by FDA were announced about two months after results of a non-randomized study in Germany cast doubt on the benefits of Impella for left-sided support in cardiogenic shock patients.
A proposed rule from the US agency would move the in vitro diagnostics from high-risk class III to class II with special controls, eliminating the requirement for a PMA.