According to the American
"the usefulness of 'cough CPR' is generally limited to
monitored patients with a witnessed arrest in the hospital setting". Despite a contagious rumor, coughing doesn't prevent a heart attack.
A victim would probably be better off directing his or her energy towards other
life saving options such as seeking immediate help or calling the emergency
To the best of my knowledge, the "advice" posted on Facebook and other websites is not condoned by medical experts
and it certainly should not be forwarded to "as many friends as possible".
Forwarding this sort of misinformation is irresponsible. Using the procedure
outlined in the message in place of immediately seeking medical help could
actually cost a life rather than save it.