A person may not realize their heart isn't working for years. Many mild signs indicate heart or circulation issues. Acute chest pain and collapse are apparent warning signs.
Chest pain is the most common indicator of a heart attack. During this time, the chest may feel tight, pressured, squeezed, or burned.
Fatigue: Non-physical fatigue is an early sign of cardiac arrest. Even after sleeping sufficiently, individuals may feel weary, which may indicate a cardiac problem.
Irregular Heart Beat: Major warning symptoms of an irregular heart rhythm that may result in cardiac arrest include frequent fluttering or palpitations, skipped beats, or a speeding heart.
Shortness of Breath: Many heart patients experience sudden shortness of breath even when they don't have any chest discomfort.
Excessive Sweating: Other indications of a heart attack include increased perspiration, dizziness, and nausea.