Angeion (St. Paul, Minnesota) said Richard Jahnke, president and chief executive officer of Angeion and its Medical Graphics subsidiary, plans to retire at the end of the fiscal year on Oct. 31. Jahnke became CEO of Medical Graphics in August 1998 and CEO of Angeion in January 2000 after Angeion acquired Medical Graphics the previous month. The board of directors has selected Rodney Young to succeed Jahnke. Young was most recently president and CEO of LecTec.