What to watch for: Sudden fainting or severe dizziness, especially when accompanied by chest pain, breathlessness, sweating, or a racing heartbeat, may indicate a serious emergency.
If someone collapses and is unresponsive or is not breathing normally, call emergency services immediately and begin CPR if you can. Use an automated external defibrillator (AED) if one is available.
Pain or Discomfort in the Upper Abdomen
Heart attack symptoms can sometimes resemble stomach pain. Discomfort may occur in the upper abdomen, just below the breastbone, and may be mistaken for gas, bloating, or indigestion.
The discomfort may occur alongside nausea, sweating, or a feeling of pressure in the chest orback.
What to watch for: New, unexplained upper abdominal discomfort accompanied by other heart attack symptoms requires immediate medical attention.
Although digestive problems are common, it is dangerous to assume that unexplained upper-body or abdominal discomfort is harmless when other warning signs are present.
