Heart disease
Bad Heart Rhythms – This is a problem with electrical activity in the heart. This can make the heart beat too fast or too slow. Very bad heart rhythms may make the heart stop pumping blood. The heart needs a normal rhythm to pump the blood well. If the rhythm is too fast, the heart may not have time for blood to enter the chambers, so there is not enough blood moving through the heart with each beat. If the heart is too slow, there may not be enough contractions of the heart to supply the body with the blood that it needs.