Cardiomegaly is another word for this sign or symptom that may be caused by certain heart conditions or even pregnancy. Know how it's treated.

Heart attack happen every 40 seconds! It occurs when the heart muscle doesn't get enough blood and only 50% knew these sign of the symptom. Sometimes there is NO warning signs at all! We called 'Silent Heart Attack' It is possible to experience several of these symptoms or just one. It's important to recognise these signs of heart attack in order to save lives! Read more about what are the causes of Heart diseases and find the way to improve your heart health here

Atrial fibrillation (Afib) and ventricular fibrillation (Vfib) are both a type of abnormal heart rhythm (arrhythmia). Atrial fibrillation is caused by irregular electrical impulses in the atria and ventricular fibrillation is caused by irregular electrical impulses in the ventricles. Symptoms of both Afib and Vfib are shortness of breath, dizziness, nausea, and chest pain.

Can you find the different parts of the human heart? Test your knowledge on this science quiz and compare your score to others.

BIO202-Heart Model

Discover with WebMD's slideshow some unexpected symptoms that could signal heart trouble. Often, related conditions can raise your risk.