What does it mean when your heart skips a beat?

Ectopy: The heart beats by electrical conduction system through the cardiac muscles - sometimes it can skip a beat or beat irregularly - these are known as arrythmias. There are benign kinds (such as psvt, pvc) and more dangerous kinds such as atrial fibrillation. An ekg will give you the answer.

Palpitation Sx: Palpitations are an awareness of extra heartbeats which most of us have. The sensation can be single or multiple and can sometimes last minutes. Different people may feel other symptoms along with them such as dizzy, lightheaded or short of breath. The palpitations are almost always atrial or ventricular premature beats. Usually benign but they are also found with abnormal hearts.