Transcatheter intracardiac device implantation for atrial level defects and thrombosis: a call for randomized, controlled data.

In their review of transcatheter device implants for atrial septal defects (ASDs) and patent foramen ovale (PFO), Krumsdorf et al. ([1][1]) present an instructive example of how the cataloguing of non-standard indications for intervention, treatment techniques, and outcome assessment confounds the