Symptoms of sudden cardiac arrest are immediate and severe and include:  Sudden collapse. No pulse. No breathing. Loss of consciousness.  Sometimes other symptoms occur before sudden cardiac arrest. These might include:  Chest discomfort. Shortness of breath. Weakness. Fast-beating, fluttering or pounding heart called palpitations.  But sudden cardiac arrest often occurs with no warning.
symptoms sudden cardiac arrest severe include:  sudden collapse  pulse  breathing  loss consciousness   symptoms occur sudden cardiac arrest  include:  chest discomfort  shortness breath  weakness  fast-beating  fluttering pounding heart called palpitations   sudden cardiac arrest occurs warning
sudden cardiac arrest