 [ Symptoms ] is philippine prudential insurance will include to cancel [ Disease ] the types of arrhythmias include premature atrial contractions these are early extra beats that originate in the atria upper chambers of the heart they are harmless and generally do not require treatment premature ventricular contractions pvcs these are among the most common arrhythmias and occur in people with or without heart disease this is the skipped heartbeat we all occasionally experience in some people it can be related to stress too much caffeine or nicotine or too much exercise but sometimes pvcs can be caused by heart disease or electrolyte imbalance people who have a lot of pvcs andor symptoms associated with them should be evaluated by a heart doctor however in most people pvcs are usually harmless and rarely need treatment atrial fibrillation atrial fibrillation is a very common irregular heart rhythm that causes the atria the upper chambers of the heart to contract abnormally atrial flutter this is an arrhythmia caused by one or more rapid circuits in the atrium atrial flutter is usually more organized and regular than atrial fibrillation this arrhythmia occurs most often in people with heart disease and in the first week after heart surgery it often converts to atrial fibrillation paroxysmal supraventricular tachycardia psvt a rapid heart rate usually with a regular rhythm originating from above the ventricles psvt begins and ends suddenly there are two main types accessory path tachycardias and av nodal reentrant tachycardias see below accessory pathway tachycardias a rapid heart rate due to an extra abnormal pathway or connection between the atria and the ventricles the impulses travel through the extra pathways as well as through the usual route this allows the impulses to travel around the heart very quickly causing the heart to beat unusually fast av nodal reentrant tachycardia a rapid heart rate due to more than one pathway through the av node it can cause heart palpitations fainting or heart failure in some cases it can be terminated using simple maneuvers such as breathing in and bearing down some drugs can also stop this heart rhythm ventricular tachycardia v tach a rapid heart rhythm originating from the lower chambers or ventricles of the heart the rapid rate prevents the heart from filling adequately with blood this can be a serious arrhythmia especially in people with heart disease and may be associated with more symptoms ventricular fibrillation an erratic disorganized firing of impulses from the ventricles the ventricles quiver and are unable to contract or pump blood to the body this is a medical emergency that must be treated with cardiopulmonary resuscitation cpr and defibrillation as soon as possible long qt syndrome the qt interval is the area on the electrocardiogram that represents the time it takes for the heart muscle to contract and then recover or for the electrical impulse to fire impulses and then recharge when the qt interval is longer than normal it increases the risk of a life threatening form of ventricular tachycardia long qt syndrome is an inherited condition that can cause