Table I.

Baseline characteristics of the study population

Parameters (n = 43)	SCF group (n = 14)	Control group (NCF, n = 29)	p value
Age (years ± SD)	55 ± 12	42 ± 11	0.001
Sex (male), n (%)	6 (43)	11 (38)	0.821
Body mass index	30 ± 4	26 ± 4	0.002
Hypercholesterolemia, n (%)	7 (50)	11 (38)	0.532
Family history of CAD, n (%)	7 (50)	10 (35)	0.334
Smoking, n (%)	4 (29)	8 (28)	0.902
HT, n (%)	9 (64)	3 (10)	0.001
Diabetes mellitus, n (%)	2 (14)	4 (14)	0.936
Hemoglobin (g/dL)	13.9 ± 1.2	13.5 ± 1.3	0.506
Total cholesterol (mg/dL)	195 ± 50	188 ± 35	0.639
LDL (mg/dL)	129 ± 45	119 ± 32	0.143
HDL (mg/dL)	40 ± 9	45 ± 9	0.428
Triglycerides (mg/dL)	144 ± 105	141 ± 63	0.929
Urotensin II (ng/mL) [median ± IQR]	711.0 [700–721]	701.5 [666.5–736.5]	0.006
Glucose (mg/dL) [median ± IQR]	103 [76–130]	94 [81–107]	0.050
Creatinine (mg/dL) [median ± IQR]	0.78 [0.67–0.89]	0.75 [0.6–0.9]	0.536
TIMI frame count measurements
LAD	31 ± 7	61 ± 30	0.001
LAD (corrected)	19 ± 4	35 ± 18	0.001
LCx	23 ± 6	32 ± 14	0.005
RCA	21 ± 5	43 ± 23	0.001
Mean	22 ± 4	37 ± 14	0.001

SCF, slow coronary flow; UII, urotensin II; HT, hypertension; SD, standard deviation; NCA, normal coronary flow (control group); CAD, coronary artery disease; TIMI, thrombolysis in myocardial infarction; LAD, left anterior descending artery; LCx, left circumflex artery; RCA, right coronary artery; IQR, interquartile range