question: I had a nuclear stress test today, and almost didn't make target heart.rate.due to.shortness of breath.  After the treadmill portion, and the radioactive injection they led me to a room to wait an hour...and I had rea lly bad.coughing spells.  I was diagnosed with reactive airway disease in my 20s, no pulmonary function tests done just given inhalers...now 46..I was still out of breath 15 minutes later.  Is coughing after.a nuclear stress.test.normal?.