Association between fibromyalgia and coronary heart disease and coronary catheterization

Fibromyalgia (FM) has been associated with physical and emotional trauma including invasive medical procedures. Both FM and ischemic heart disease have been linked with depression. The purpose of this study was to retrospectively investigate the frequency of FM symptoms and physical findings among patients undergoing coronary catheterization.

Consecutive patients who underwent coronary angiography during the previous 6 mo were recruited. Patients with major depression, bi-polar disorder, schizophrenia, or malignancy were excluded. Patients underwent dolorimetry for tender-point assessment and completed the fibromyalgia impact questionnaire (FIQ). Group A included patients with significant coronary pathology (n = 43), group B included patients with normal coronary arteries (n = 50), and group C included patients with normal controls (n = 51). A cardiological score incorporated the number of coronary arteries with significant pathology and left ventricular function. Chi-square or Fisher's exact test was used for categorical data and a one-way analysis of variance for continuous variables; a multivariate linear regression was performed to compare groups.

Significantly increased levels of tenderness were discovered among patients with coronary pathology compared with healthy controls. Significantly increased levels of depression were also found, as well as higher scores on the FIQ scale. On multivariate analysis, a positive correlation was demonstrated between tenderness/FIQ scores and a composite cardiological score.

Coronary angiography is associated with a significantly increased frequency of pain, tenderness, and depression after 6 mo, apparent in both patients undergoing coronary procedures and patients with normal coronaries. This association may impact the outcome of patients with significant coronary disease.