The drug Prajmaline has been used to treat a number of cardiac disorders.

If symptoms occur or there are underlying cardiac disorders, treatment may be necessary.

PSVT is generally not life-threatening, unless other cardiac disorders are present.

Alderson's past work focused on applications of radioactive tracers to cardiac and pulmonary disorders.

However, even in carefully screened populations sudden death is often the first manifestation of a cardiac disorder.

As it progresses, however, Lyme disease can cause arthritis and cardiac and neurological disorders.

It was called the most common cardiac disorder in young people and the most common heart-valve disease among people of all ages.

Developmental disabilities and cardiac disorders may complicate matters further.

Because the Still's murmur has never been associated with any sort of cardiac disorder, it has no associated symptoms.

"It can occur completely without any other cardiac disorder," Dr. Fox said.