Dr Sanjay Gupta - Yorkshire Consultant Cardiologist puts in plain words with regards to Palpitations

Heart palpitations are pulses that abruptly become more noticeable.
Your heart Palpitations may seem alarming, but in most cases they'reharmless and are not an indicator of a problem together with your heart.

http://paulinedavis2015.blogspot.com/2015/07/yorkshire-top-doctor-heart-professional.html