But sometimes the electrical signals don’t “communicate” properly with the heart muscle, and the heart starts beating in an abnormal rhythm — this is an arrhythmia (also called dysrhythmia). Arrhythmias can be congenital (meaning a person is born with one) or happen later, and they can be temporary or permanent.Read More →

The heart of an embryo starts to beat from around 5–6 weeks of pregnancy. Also, it may be possible to see the first visible sign of the embryo, known as the fetal pole, at this stage. The developing heart is made up of two tubes that have fused in theRead More →