How can you differentiate between common indigestion symptoms and potential signs of a heart attack, and what immediate actions should you take if you suspect a heart attack? Heart attack symptoms, such as chest tightness or pain, shortness of breath, nausea, and dizziness, can range from mild to severe. But according to Manhattan Cardiology’s founder and cardiologist Dr. Robert Segal, an early diagnosis should be given top attention for the 805,000 Americans who experience one each year. Read the article.