According to experts, rapid fluttering or heartbeating can cause heavy, pounding beats. While they are ... oxygenated blood ...

Diastolic heart failure causes a stiff left ventricle that prevents the heart from relaxing between beats. Common symptoms include coughing, tiredness, and shortness of breath. Systolic and ...

You feel heart palpitations for more than several seconds. You have a medical history of heart disease or risk factors for it. Your heart is racing or skipping beats enough to affect your day-to-day ...