Proportional Serum Lipid Parameters in Coronary Slow Flow Phenomenon

ABS TRACT Objective: The association between serum lipid parameters and coronary slow-flow (CSF) phenomenon has been searched previously. The aim of our study was to determine the association between proportional serum lipid parameters and CSF. Material and Methods: We enrolled 93 stable patients randomly who had undergone coronary angiography and had near-normal coronary arteries with normal and slow coronary flow. Demographic, clinical and laboratory data were recorded retrospectively. Coronary flow velocity was evaluated by TIMI frame count (TFC). CFS phenomenon was defined as a TFC greater than 27 frames. Corrected TFC was calculated for the left anterior descending coronary artery. Results: Fifty four patients were in CSF group and 39 patients were in control group. The mean age of the patients in CSF group was significantly higher than control group (55.4±9.5 vs. 50.5±9.8 years, p= 0.019). Triglyceride (TG) levels was found higher in CSF group than control group (187.3±103.4 mg/dl, 125.3±63.8 mg/dl, p<0.001). Total cholesterol to high density lipoprotein cholesterol ratio (TC/HDL-c), TG/HDL-c, low density lipoprotein cholesterol to HDL-c ratio (LDL-c/HDL-c) and non-HDL-c levels were significantly higher in CSF group (p=0.007, p=0.004, p=0.044, p=0.018, respectively). TG and TG/HDL-c were found correlated with TFC (r=0.280, r=0.262, respectively). In multivariate logistic regression analysis age, smoking and TG were found statistically significant to predict of CSF. TG was found most associated with the presence of CSF (OR: 7.516, p=0.001). Conclusion: Higher TG, TC/HDL-c, TG/HDL-c, LDLc/HDL-c and non-HDL-c levels were related with CSF phenomenon.