Roderick de Greef has been named executive vice president and chief financial officer and Guy Sohie, PhD, senior vice president of operations for Cardiac Science (Irvine, California). Additionally, Prabodh Mathur was promoted from vice president of research and development to chief product development officer. Since 1995, de Greef has provided corporate finance advisory services to a number of early stage companies and has served as an advisor to Cardiac Science's board of directors since early 1997. Sohie previously served as principal consultant to Global Insite, advising companies on operational issues and product development. Cardiac Science makes cardiac defibrillator devices and software that monitors a patient's cardiac activity.

John McTear has been named director of finance and administration for Checkpoint Genetics (West Chester, Pennsylvania), an operating unit of Checkpoint Genetics Pharmaceuticals. Previously, McTear served as controller at Cooper Biomedical and vice president at EDI Able. Checkpoint Genetics is a privately held pharmaceutical company focused on products for preventing cardiovascular diseases and the maintenance of heart health.

James Rouse has been appointed president of Micron Products (Fitchburg, Massachusetts), a wholly owned subsidiary of Arrhythmia Research Technology. Rouse has served at the company as plant manager since 1996 and recently as general manager of operations. Micron makes silver-plated sensors and metal snap fasteners used in the manufacture of disposable electrodes for ECG diagnostic, monitoring and related instrumentation.

Richard Martin, president of Medtronic Physio-Control (Redmond, Washington), maker of the Lifepak 500 automated external defibrillator, will retire from that post May 1 after 10 years of service. He will be replaced by Jon Tremmel, who began his career at Medtronic in 1978 and has served in a number of senior leadership positions, including vice president/general manager for drug delivery systems and president of the company's interventional vascular business. For the past five years, Tremmel has led Medtronic's tachyarrhythmia business.