Dr. Zian Tseng's study cited in the San Francisco Chronicle

In the article, key findings are discussed in an interview with Dr. Zian Tseng of the San Francisco POstmortem Systematic InvesTigation of Sudden Cardiac Death (POST SCD) Study in which nearly every death in the city over a three-year period was reviewed:  many San Francisco fatalities attributed to sudden cardiac arrest were actually from other causes, and of those that were correctly classified, nearly half were not arrhythmic — involving an irregular heartbeat — meaning that defibrillators or CPR would not have saved the person, the study found. The research was a collaboration between UCSF and the San Francisco medical examiner’s office.  Read more here.