To determine whether sexual activity might trigger sudden cardiac arrest, researchers examined records on 4,557 cases of cardiac arrest in adults between 2002 and 2015 in a community in the northwestern United States.
But overall sexual activity is very unlikely to cause death because of triggering sudden cardiac failure or a heart attack.
Out of these only 34 were during or within an hour of having sex, and 32 of those were men, who were already taking drugs for heart conditions.
Dr Sumeet Chugh, senior study author and associate director of the Cedars-Sinai Heart Institute said: "Even though SCA during sexual activity was witnessed by a partner, bystander CPR was performed in only one-third of the cases". It causes someone to fall unconscious and stop breathing and unless treated with CPR, it is fatal.
This was slightly higher than the 27 per cent of non-sex triggered heart attacks, the difference was not statistically significant and those individuals might have died alone.
Those who experienced sexual activity related sudden cardiac arrest tended to be younger, with an average age of 60.3 years, compared to an average age of 65.2 years for those who had a sudden cardiac arrest that wasn't linked to sex. The researchers also tell that in such cases patient should not try to get CPR as it will increase the chances of survival. Well, the study concludes that there are rare chances that cardiac arrest can trigger someone during sexual intercourse.
The study hence concludes that 1% of the cardiac arrest happens because of sex in men where the percentage is 0.1% in women. The vast majority were male and were more likely to be middle-aged, African-American and have a history of cardiovascular disease. It's possible, he said, that men have more underlying risks or that some took risky medications or supplements that did not show up in the study.
Another finding from the new study: Just one-third of people who collapsed during or after sexual intercourse received CPR "despite the fact that you are usually guaranteed a bystander", in such cases, Chugh said.
"These findings highlight the importance of continued efforts to educate the public on the importance of bystander CPR for SCA, irrespective of the circumstance".