Patients are frequently asked about iodine or seafood allergy before IV contrast material is administered because of a commonly held belief among radiologists and others in the medical community of a specific cross-reactivity between iodinated radiographic contrast material and other iodine-rich substances.
Pericarditis is inflammation of the pericardium, two thin layers of a sac-like tissue that surrounds the heart, holds it in place and helps it work. A small amount of fluid keeps the layers separate so that thereâs no friction between them.
Supraventricular tachycardia (SVT) is a common heart abnormality that presents as a fast heart rate. This heart rhythm disturbance can occur in healthy individuals and may include such symptoms as chest pain, palpitations, shortness of breath, sweating, and feeling faint. In rarer instances, unconsciousness may occur.