ventricular tachycardia, which occurs when the lower chambers of the heart pump too fast, reducing the amount of oxygen in the blood.atrial flutter, which is a fast and irregular heartbeat.Palpitations can also result from arrhythmia, which refers to any change to a person’s regular heartbeat. cardiomyopathy, wherein the heart becomes enlarged.
The British Heart Foundation notes that palpitations can stem from a wide range of underlying heart conditions, such as: However, they can also indicate an underlying heart problem. Some causes include physical or mental stress, anxiety, dehydration, and lack of sleep. Many factors can trigger heart palpitations.