HealthDay: Fine particles of pollution that linger in the air can increase the risk of sudden cardiac arrest, warns a new study. Researchers compared data about air pollution levels in New York City and 8,216 out-of-hospital cardiac arrests that occurred in the city between 2002 and 2006. They found that a rise of 10 micrograms per cubic meter of air in small-particle air pollution was associated with a 4 to 10 percent increase in the number of out-of-hospital cardiac …