All patients MetS No MetS P-value
Baseline coronary function        
CBF, mL/min 43.9 ± 31.7 45.4 ± 27.9 42.0 ± 36.0 0.29
CVR, mmHg×min/mL 3.59 ± 2.39 3.46 ± 2.37 3.77 ± 2.42 0.20
Coronary artery diameter, mm 2.62 ± 0.73 2.65 ± 0.73 2.57 ± 0.72 0.25
Responses to acetylcholine        
Change of CBF, % 108 ± 98 97 ± 93 122 ± 102 0.015
Change of CVR, % –40 ± 29 –37 ± 31 –45 ± 27 0.008
Change of coronary diameter, % –0.92 ± 11.01 –1.72 ± 11.32 0.12 ± 10.56 0.10
Responses to nitroprusside        
Change of CBF, % 126 ± 85 126 ± 81 125 ± 90 0.95
Change of CVR, % –52 ± 21 –52 ± 19 –51 ± 23 0.50
Change of coronary diameter, % 17.40 ± 14.07 16.85 ± 14.38 18.16 ± 13.64 0.45
Responses to adenosine        
Change of CBF, % 314 ± 157 298 ± 156 335 ± 157 0.03
Change of CVR, % –72 ± 11 –71 ± 11 –74 ± 10 0.029
BMI: Body-Mass Index; CAD: Coronary Artery Disease; CBF: Coronary Blood Flow; CVR: Coronary Vascular Resistance
Categorical variables are presented as absolute (relative) frequencies; continuous variables, as mean ± SD.
P-values for comparisons between patients with and without MetS are derived from student’s t-test for unpaired measures.
Table 2: Coronary artery characteristics of the whole study population and according to presence of metabolic syndrome (MetS).