Letter: Inflammatory Markers and Coronary Collateral Circulation.

The article discusses the significance of the pan-immune inflammation value (PIV) in predicting coronary collateral circulation (CCC) in patients with stable coronary artery disease. The authors raise questions regarding the findings of a study that linked inflammation to poor CCC, particularly noting discrepancies in lymphocyte counts and the SYNTAX score, which measures coronary artery disease complexity. They also highlight the role of diabetes mellitus in cardiovascular disease prognosis and query the relationship between diabetes prevalence and blood glucose control in the study's patient groups. Additionally, they seek clarification on the contrasting odds ratios and area under the curve (AUC) values for PIV and the C-reactive protein/albumin ratio (CAR) in predicting poor CCC. [Extracted from the article]