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Vasovagal syncope is a condition that leads to fainting in some people. It's the most common cause of fainting and is usually thought of as benign.
Ventricular fibrillation is a type of arrhythmia, or irregular heartbeat, that affects your heart's ventricles.
A ventricular septal defect (VSD) is a congenital heart defect. This means that your baby is born with it. A VSD is an opening or hole in the dividing wall (septum) between the 2 lower chambers of the heart (right and left ventricles). ...
Ventricular tachycardia is a fast, abnormal heart rate that begins in the lower chambers of the heart. It can become life-threatening if it lasts more than a few seconds.