Table 2.

Correlations Between Arterial NPY Levels, Coronary Hemodynamics, and Cardiac Magnetic Resonance Measurements

Variable	CS (n=68)		PV (n=163)		CS‐A (n=68)
	R	P value	R	P value	R	P value
Coronary hemodynamics
Coronary flow reserve	−0.24	<0.05*	−0.23	<0.01*	−0.13	0.30
Index of microcirculatory resistance	0.09	0.50	0.03	0.72	−0.14	0.26
Post‐PPCI cardiac MRI
Ejection fraction	−0.18	0.22	−0.26	0.01*	−0.06	0.66
Microvascular obstruction	0.49	<0.001*	0.09	0.42	−0.14	0.35
Edema (% LV)	0.49	<0.001*	0.25	0.02*	−0.03	0.82
Late gadolinium enhancement	0.36	0.01*	0.07	0.52	−0.12	0.41
End‐diastolic volume	0.12	0.42	0.12	0.23	0.09	0.53
End‐systolic volume	0.15	0.35	0.20	0.05*	0.18	0.28
6‐mo Cardiac MRI
Ejection fraction	−0.43	0.01*	−0.26	0.02*	0.29	0.08
End‐diastolic volume	0.08	0.61	0.09	0.43	−0.07	0.69
End‐systolic volume	0.23	0.16	0.23	0.03*	−0.19	0.25
Late gadolinium enhancement	0.57	<0.001*	0.27	0.01*	−0.11	0.52

CS indicates coronary sinus; LV, left ventricle; MRI, magnetic resonance imaging; NPY, neuropeptide Y; PPCI, primary percutaneous coronary intervention; and PV, peripheral venous.

^*indicates statistical significance.