A specialist in cardiac electrophysiology is known as a cardiac electrophysiologist, or (more commonly) simply an electrophysiologist. Cardiac electrophysiology is considered a subspecialty of cardiology in most countries and usually requires two or more years of fellowship training beyond a general cardiology fellowship.
PHOTOS: William and Kate's childhood pictures. But as with her first pregnancy, Duchess Kate is suffering from hyperemesis gravidarum, a very acute morning sickness, which required an in-patient stay at King Edward VII's Hospital during her pregnancy with Prince George. So far with this pregnancy, however, the Duchess is being treated at home.
In pictures: Kate's style hits and misses. If the Duchess's second baby is very overdue, it is possible she could even give birth to an election day baby on May 7. A delay of two weeks after the due date is not uncommon and would not be any cause for concern.