Best cardiologist near yelahanka Bangalore Signs and Symptoms of coronary artery disease?? ~If you coronary arteries narrow, they can't supply enough oxygen-rich blood to your heart--especially when it's beating hard, such as during exercise.At first, the decreased blood flow may not cause any symptoms. As plaque continues to build up in your coronary arteries, then you may develop the following coronary artery disease signs and symptoms. -Angina (chest pain) -Palpitations -Sweating -Weakness -Shortness of breath -Rapid heartbeat -Dizziness -Nausea & vomiting -Heart attack etc., ,