Diesel Exhaust Fluid (DEF) is an emissions control liquid required by modern diesel engines. It is injected into the exhaust stream. DEF is never added to diesel fuel. It is a non-hazardous solution of 32.5% urea in 67.5% de-ionized water.
Side effects from cardiac stress testing may include. Palpitations, chest pain, myocardial infarction, shortness of breath, headache, nausea or fatigue. Adenosine and dipyridamole can cause mild hypotension. As the tracers used for this test are carcinogenic, frequent use of these tests carries a small risk of cancer.
Chemical Stress Tests Could Trigger Heart Attack, Death. The FDA's warning applies to two chemical stress test drugs called Lexiscan (regadenoson) and Adenoscan (adenosine). The injectable drugs dilate the arteries in your heart and increase blood flow, allowing doctors to check for areas of damage or low blood flow.