Other Symptoms
In addition to these signs, long QT syndrome can also trigger many other symptoms. You might experience chest pain as the heart doesn’t pump sufficient blood to important organs. This causes pain receptors around your heart to send signals to your brain and leads to a heavy or sharp feeling in the chest. Also, you might experience fainting spells, lightheadedness, mental confusion, and dizziness. All of these symptoms are caused when your brain does not get sufficient oxygen to perform basic functions. [5]
