“Cough CPR” is misinformation
What is “cough CPR”?
“Cough CPR” is a myth which claims that rhythmic coughing can reduce the impact of a heart attack. It has been circulating for over two decades via email and on social media platforms (Wikipedia, 2023).
Why doesn’t it work?
A heart attack happens when the blood flow to the heart is restricted due to blockage. Cardiac arrest is when your heart stops pumping completely (British Heart Foundation, n.d.).
These definitions alone should demonstrate the problem with “cough CPR”. If you have a heart attack, your heart is still pumping, so you do not need CPR. If you experience cardiac arrest, you will fall unconscious within seconds (Resuscitation Council UK, 2021) and therefore won’t be able to perform “cough CPR”.
In many cases, “cough CPR” could even worsen the problem or prove fatal if coughing is undertaken to the wrong rhythm (Snopes, 2003).
Is “cough CPR” ever useful?
Coughing creates pressure that forces blood to flow to the brain (Cleveland Clinic, 2020).
It may therefore be possible for someone experiencing sudden arrhythmia to maintain consciousness for a few seconds by coughing. However, the patient would already need to be under constant monitoring for the arrhythmia to be detected. It should also only be done at the instruction of a doctor, as a medical professional will still be needed to treat the abnormal heart rhythm (American Heart Association, 2023).
Cases where “cough CPR” has been useful have all been isolated incidents performed in this kind of clinical setting (see Snopes, 2003; UChicago Medicine, 2019; American Heart Association, 2023).
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