The sequence of cardiacrhythm
deterioration is usually tachycardia followed
by bradycardia, pulseless electrical activity,
and, finally, asystole.17,18 The whole drowning
process, from submersion or immersion to cardiac
arrest, usually occurs in seconds to a few minutes,
but in unusual situations, such as hypothermia or
drowning in ice water, this process can last for
an hour