Acutus Medical, which is developing an electrophysiology diagnostic to map cardiac arrhythmias, has raised an additional $2.5 million in an expanded Series A round meant to raise a total of $5 million. Investors include Index Ventures and Advent Venture Partners. This, as MedCity News reports, is meant to build on $5.4 million raised in January. The company will use the money to support ongoing technology development. Acutus is based in both San Diego, CA, and Zurich, Switzerland. Story