question: I am a 35 y/o female with a 4 month history of CP with SOA.  I have had a Nuclear Stress test and an Echo, all which were normal.  However, they did find that I have a Left Bundle Branch Block.  I wore a 30 day halter monitor which revealed PVCs/PACs, but not much else.  I had the same chest pain last night above my left breast, with shortness of breath, and left arm numbness.  After an hour I went to the ER.  The normal tests were ordered, but the ER doctor also ordered a D-Dimer, and mine was elevated to 0.65.  All other lab tests were WNL. She ordered a CT Angio of my chest whicChatDoctore back normal.  She didnt explain what could cause the elevated D-Dimer, nor whether or not I should be concerned, or what I should do about it.  I am on Metoprolol and Lisinopril for my heart.