calculated while the tip is stationary. By calculating the strength and orientation of the magnetic fields at a given location, the x,y,z position may be calculated along with the roll, pitch, yaw orientation. Ensite St. Jude Medical, now a part of Abbott, manufactures EnSite family of cardiac mapping systems, the latest edition being EnSite Precision, which allows speedy heart mapping during catheter ablation with better accuracy to be able to treat cardiac rhythm disturbances. Notable cardiac electrophysiologists Mark Josephson (1943-2017), American Hein Wellens (1935-2020), Dutch George Klein, Canadian Kenneth Ellenbogen, American Eric Prystowsky, American Michel Haïssaguerre (born 1955), French Michel Mirowski (1924–1990), Polish-Israeli-American Richard N. Fogoros, American Bruce Lerman, American Amiran Revishvili (born 1956), Russian See also Clinical cardiac electrophysiology Electrical conduction system of the heart Electrocardiogram Electrophysiology study Radiofrequency ablation References