Contact information Millard Fillmore Suburban Hospital 1540 Maple Road Williamsville, NY 14221 (716) 568-6440

Language assistance services are available free of charge for anyone who has a need for an interpreter. Tenemos servicios de ayuda en Español, para cualquiera que necesita un intérprete. Cardiac Testing

www.kaleidahealth.org SUB-023 5/13 Cardiolite stress testing with nuclear imaging disease with expiratory wheezes. evaluates the possibility of coronary disease increases CBF demand by increasing in patients. Myocardial is measured rate. It may also increase SBP, but at higher for evidence of (inadequate doses, the SBP usually tends to fall and the flow to the heart muscle) and/or infarct (prior Trendelenberg position is needed. There is heart attack), as well as cardiac function by greater frequency of . A stress measurement of left ventricular ejection fraction defect indicates that CBF demand was greater (LVEF) and wall motion. than the available supply and caused ischemia.

Three methods of Cardiolite Two methods of Echo stress stress testing are available testing are available 1. The Exercise Cardiolite Stress Test is preferred. 1. Stress Echo, with treadmill exercise, is a Treadmill exercise increases and method to evaluate left ventricular regional systolic (SBP) to produce wall motion (RWM) for ischemia in patients greater myocardial demand for coronary blood with good echo-windows. This method of flow (CBF) supply. Supply usually matches cardiac stress with echo imaging is especially demand, but when demand outstrips supply, valuable for pregnant or nursing women, in ischemia occurs and a stress defect appears whom you do not wish to expose the embryo that is not seen in the rest of the image. or nursing infant to even a small amount of radiation or claustrophobic patients who 2. Persantine Cardiolite Stress Tests are used require a cardiac stress test with imaging. when the patient cannot exercise, has an abdominal aortic aneurysm (AAA), a left 2. The Dobutamine Echo Stress Test is an (LBBB) and if taking a alternative to Cardiolite for claustrophobic medication that blunts the heart patients with bronchoconstrictive disease with rate response. Persantine increases CBF by expiratory wheezes. Dobutamine is infused allowing the natural vasodilator to intravenously and titrated to a higher dose accumulate. If there is a clinically significant every three minutes to achieve a targeted heart coronary stenosis blood flow to that area, rate. In both the exercise and Dobutamine cannot increase and a relative stress defect not stress echo tests, increasing CBF demand present in the rest image will appear. RWM will increase until demand outstrips supply and then ischemia occurs as indicated 3. Dobutamine Cardiolite Stress Tests are used by a decrease in the RWM. when the patient cannot exercise secondary to or other bronchoconstrictive