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ventricular tachycardia

noun

, Pathology.
  1. a cardiac arrhythmia in which the muscles of the ventricles contract irregularly in a rapid, uncoordinated manner, impairing the normal pumping of blood.


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Cardiologists and radiation oncologists at Washington University School of Medicine in St. Louis pioneered the use of radiation therapy -- a strategy typically used against cancer -- to treat patients with a life-threatening abnormal heart rhythm called ventricular tachycardia.

"The radiation therapy used to treat ventricular tachycardia is targeted to a specific location in the heart; however, a large portion of the rest of the heart gets a low-dose exposure," said co-senior author and cardiologist Ali Javaheri, MD, PhD, an assistant professor of medicine.

A complex condition, heart failure can have diverse triggers, including a past heart attack, viral infection or chronic arrhythmias such as ventricular tachycardia.

To understand more about radiation's effects on the heart, the researchers plan to continue their investigations of the patients already receiving radiation therapy for ventricular tachycardia.

A group of nine patients with ventricular tachycardia was evaluated with cardiac MRI before and after radiation treatment, with the MRIs showing improved heart function soon after radiation.

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ventricular fibrillationventriculography