The Systemic Immune-Inflammation Index May Predict the Coronary Slow Flow Better Than High-Sensitivity C-Reactive Protein in Patients Undergoing Elective Coronary Angiography

Table 2

Angiographic characteristics and laboratory results of the patients with coronary slow and normal coronary flow.

Variable	All patients (n = 197)	CSF (n = 105)	Normal coronary flow (n = 92)	value
Coronary flow rate, frame counts
Corrected TFC of LAD artery	30.2 ± 10.6	39.3 ± 4.9	19.9 ± 2.9	<0.001
TFC of Cx artery	28.6 ± 9.1	36.2 ± 4.7	20.1 ± 3.1	<0.001
TFC of RCA	28.3 ± 9.9	36.6 ± 5.5	18.9 ± 2.2	<0.001
Mean TFC	29.1 ± 9.3	37.4 ± 3.2	19.6 ± 1.6	<0.001
Laboratory findings
eGFR, mL/min/1.73 m^2	94.7 ± 24.8	93.6 ± 15.7	95.9 ± 36.2	0.514
Hemoglobin, g/dl	13.9 ± 1.7	13.9 ± 1.8	13.8 ± 1.6	0.270
LDL cholesterol, mg/dl	142.7 ± 30.4	149.6 ± 34.9	134.7 ± 21.6	0.001
Neutrophil count, (×10^3/ml)	6.99 ± 3.90	9.01 ± 4.17	4.69 ± 1.72	<0.001
Lymphocyte count, (×10^3/ml)	2.08 ± 0.82	1.75 ± 0.71	2.47 ± 0.77	<0.001
Platelet count, (×10^3/ml)	228 ± 73	267 ± 72	184 ± 44	<0.001
PLR, median (IQR)	106 (74–154)	150 (112–232)	75 (59–101)	<0.001
NLR, median (IQR)	2.78 (1.86–5.06)	4.69 (3.34–7.89)	1.86 (1.45–2.23)	<0.001
hsCRP, mg/dl, median (IQR)	1.9 (1.1–5.7)	4.4 (1.5–11.0)	1.1 (0.8–2.2)	<0.001
SII, (×10^3/ml), median (IQR)	748 (443–1388)	1313 (773–2066)	539 (254–914)	<0.001

CSF, coronary slow flow; eGFR, estimated glomerular filtration rate; hsCRP, high-sensitivity C-reactive protein; IQR, interquartile range; LAD, left anterior descending; Cx, circumflex; LDL, low-density lipoprotein; NLR, neutrophil-to-lymphocyte ratio; PLR, platelet-to-lymphocyte ratio; RCA, right coronary artery; SII, systemic immune-inflammation index; TFC, thrombolysis in myocardial infarction frame count.