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.
1 A stress test is a type of nuclear medicine exam: you receive a radioactive tracer that highlights your blood so a special camera can see it easily. 2  A stress test is used to evaluate the cause of chest pain or measure the strength of your heart after a heart attack or surgery, for example.