One or many rapid circuits in the atrium may cause atrial flutter. Usually more regular and organized than atrial fibrillation, atrial flutter occurs in people who have heart disease or who have had recent heart surgery. This eventually turns into atrial fibrillation.
A very common type of heart arrhythmia, atrial fibrillation affects the elderly and is due to the atria contracting abnormally.
Paroxysmal supraventricular tachycardia (PSVT)
Originating from above the ventricles, PSVT is a rapid heart rate accompanied by a regular rhythm, and it begins and ends immediately.
There are two main types of PSVT: accessory path tachycardias and AV nodal reentrant tachycardias.
Accessory pathway tachycardias
A rapid heart rate occurs when impulses travel through abnormal pathways between the ventricles and the atria.
AV nodal reentrant tachycardia
Similar to accessory pathway tachycardias , AV nodal reentrant tachycardia may cause heart failure, palpitations, or even fainting. In some cases, individuals may need no medical treatment as simple maneuvers such as proper breathing or bearing down can temper their heart rate. Other cases require medical treatment, and your doctor may also prescribe drugs to regulate heart rhythm.
Ventricular tachycardia (V-tach)
Originating from the lower chambers of the heart, V-tach is a rapid heart rhythm that prevents the heart from filling up with blood. This is an emergency situation immediately requires immediate medical attention and care.
In this condition, because of its erratic and disorganized firing of impulses, the heart’s ventricles have a difficult time pumping blood into the body. This delicate and dangerous condition requires immediate medical attention and care.
Long QT syndrome
The QT interval is the measurement on the electrocardiogram that shows the time electrical impulses fire and then recharge. This represents the time the heart muscle contracts and then recovers. If the QT interval becomes longer than normal, then this may hint at a possible life-threatening condition. This can also cause sudden death in young people, and can only be treated with the use of a pacemaker, electrical cardioversion, ablation therapy, or implanted cardioverter/defibrillator.