Figure 5From: The effect of electrical neurostimulation on collateral perfusion during acute coronary occlusion Pressure recordings of a patient. Showing the aortic pressure and distal coronary wedge pressure during the first ischaemic episode. The lower line represents the wedge pressure (Pw), characterized by a shape that shows that the diastolic pressure is most compromised. The upper line represents the aortic pressure (Pa). This Pw/Pa ratio is 0.22.Back to article page