Fig. 3
![Fig. 3](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40560-021-00585-1/MediaObjects/40560_2021_585_Fig3_HTML.png)
Scatter plot of the femoral-to-radial arterial pressure gradient (FR-APG) versus non-invasive brachial-to-radial arterial pressure gradient (NIBR-APG). The correlation between the FR-APG in mean arterial pressure (MAP) and the NIBR-APG in MAP was r2 = 0.32 (p < 0.001)