Drowning causes about five hundred thousand deaths in the world every year. There is a higher risk of adverse medical events and death from cardiac causes in participants of cold water swimming (CWS).
CWS can be connected with release of cardiac troponins, however, it is not connected with release of NT-proBNP. Future research should clarify whether release of cardiac troponins during CWS can be connected with presence of arrhythmias, higher cardiovascular risk or probability of incidental heart failure.