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. 2020 Feb 29;106(10):758–764. doi: 10.1136/heartjnl-2019-316075

Table 4.

Physiology for all patients with Combowire data including post-PCI Combowire results pressure following Core Laboratory analysis (n=89/93), flow and resistance data for all randomised patients with Combowire data according to treatment group

Baseline invasive physiology for entire cohort
N Minimum Maximum Mean (SD)
FFR 89 0.75 0.82 0.78 (0.02)
HMR 89 0.9 6.9 2.10 (0.84)
HSR 89 0.15 2.00 0.52 (0.25)
CFVR 89 1.3 5.0 2.41 (0.75)
By randomised group
N Mean SD
FFR OMT 38 0.78 0.02
PCI 51 0.78 0.02
HMR OMT 38 2.21 0.74
PCI 51 2.01 0.91
HSR OMT 38 0.55 0.21
PCI 51 0.50 0.27
CFVR OMT 38 2.35 0.72
PCI 51 2.45 0.77
Invasive physiology pre-PCI and post-PCI
Pre-PCI Post-PCI N P value
FFR 0.77 (0.02) 0.90 (0.06) 41 0.001
HMR 2.07 (0.98) 2.31 (0.95) 41 0.02
HSR 0.51 (0.29) 0.20 (0.18) 40 0.001
CFVR 2.34 (0.73) 2.28 (0.69) 40 0.548

CFVR, coronary flow velocity reserve; FFR, fractional flow reserve; HMR, hyperaemic microvascular resistance; HSR, Hyperaemic Stenosis Resistance Index; N, total number of patients; OMT, optimal medical therapy group; PCI, percutaneous coronary intervention with medical therapy group.