This is caused by heart damage or blockage of blood vessels. Symptoms can include any of those mentioned. A pacemaker is used to treat this condition, along with medication. A pacemaker is a tiny device surgically implanted under the skin that regulates the heart's rhythm by controlling the electrical impulses. Premature heartbeats are fairly common.
Premature beats can occur in the atria or the ventricles.
Again, this is more serious when it occurs in the ventricles. Either type can occur in people with perfectly healthy hearts. They can also occur in people with high blood pressure, and can be a sign of heart disease. Premature atrial beats may also show up in people who use stimulants such as nicotine and caffiene. Use of some illegal drugs can also have serious effects on the heart which can be potentially fatal.