An electrophysiology (EP) procedure helps doctors evaluate the electrical activity of the heart, facilitating the diagnosis of arrhythmias and other rhythm changes. During an EP procedure, doctors may ...

A nuclear stress test helps to assess your risk of a severe cardiac event. Depending on your health, a doctor may ask you to take a treadmill test or a chemical test, which uses medications to ...

The Hughson-Westlake method is based on the principle that short-tone burst are better heard against a silent background than a continuous tone separated by a short interval when the level is changing ...

Quantitative fit testing is the preferred testing method. The ambient aerosol condensation nuclei counting (CNC) method, using a Portacount® Plus instrument, has been selected as the quantitative fit ...

WHEN OSHA's revised Respiratory Protection Standard for General Industry, 29 CFR 1910.134, became effective on April 8, 1998, it provided employers with an all-inclusive reference source for fit ...

A sealed source means radioactive material that is permanently bonded or fixed in a capsule or matrix designed to prevent release and dispersal of the radioactive material under the most severe ...