Impact of caffeine on myocardial perfusion reserve assessed by semiquantitative adenosine stress perfusion cardiovascular magnetic resonance

Table 2 Semiquantitative analysis of ischemic and remote segment perfusion

	baseline (w/o caffeine) n = 25		p	follow-up (w/ caffeine) n = 25		p	p (baseline vs. follow-up)
	ischemic	remote		ischemic	remote		ischemic	remote
RU rest	11.4 ± 2.6	10.7 ± 2.0	0.40	10.9 ± 2.4	12.0 ± 2.2	0.32	0.27	< 0.01
RU adenosine	10.5 ± 3.3	15.7 ± 2.8	< 0.001	9.7 ± 2.9	14.6 ± 3.3	< 0.001	0.13	< 0.05
RU_rest/RU_adenosine = MPRI	0.95 ± 0.23	1.49 ± 0.19	< 0.001	0.89 ± 0.18	1.24 ± 0.19	< 0.001	0.23	< 0.001
MPRI_remote/MPRI_ischemic = MPRI ratio	1.64 ± 0.35			1.41 ± 0.19			0.01

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