Researchers from America have found that less than one percent of people had experienced a sudden cardiac arrest during, or just after, sex. Published in the Journal of the American College of Cardiology, the study found that of the more than 300,000 people who die annually in the United States from sudden cardiac arrest, only about 1 in 100 men and 1 in 1,000 women experience sudden cardiac arrest relating to sexual activity. By examining data on more than 4,500 sudden cardiac arrests between 2002 and 2015 in Portland, Oregon, the Oregon Sudden Unexpected Death Study found that 34 were related to sex, and most of these were men with a history of heart diseases. The study also found that sudden cardiac arrests occurred during sexual activity in 18 cases, 15 cases within minutes of it, and in one case the timing could not be determined. It is unclear from the study how exhausting the sexual activity was, how often they had sex, the type of intercourse or how long it lasted for the patients, but the results shows that there isn't a high risk of sudden cardiac arrest associated with sex. However, what was very clear from the study is that sexual partners aren't particularly willing to perform CPR, or don't know how, if a partner goes into sudden cardiac arrest. To find out more check out Sexual Activity as a Trigger for Sudden Cardiac Arrest.