Since I started thinking about Sed rate, I remembered that several researchers in CFS have noted that low sed rates occur only in a handful of conditions: CFS, Giant Cell Arteritis, and Idiopathic Cardiomyopathy are among the few. Some workers in the CFS field even consider CFS to be a form of Heart Failure, an infiltration myopathy caused by thickening and stiffening of the heart tissue. David Wheldon noted the stiffening he observed in autopsies of Aortic Aneurism victims.
Dilated cardiomyopathy and Chlamydia pneumoniae infection
strengthens the connection, I think
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?CMD=Display&DB=pubmed is a case history where early detection of C.Pn. probably saved the patient's life.