IgE is found in all humans, and they are located in the lungs, skin, and mucous membranes. They target foreign bodies such as pollen, fungus spores, and animal dander, and they help the body to react by detecting their presence. People with allergies tend to have a higher amount of IgE in their bodies.
Supraventricular tachycardia is a series of rapid heartbeats that begin in or involve the upper chambers (atria) of the heart. SVT can cause the heart to beat very rapidly or erratically. As a result, the heart may beat inefficiently, and the body may receive an inadequate blood supply.
Supraventricular tachycardia. Supraventricular tachycardia (SVT) is an abnormally fast heart rhythm arising from improper electrical activity in the upper part of the heart. There are four main types: atrial fibrillation, paroxysmal supraventricular tachycardia (PSVT), atrial flutter, and Wolff-Parkinson-White syndrome.