Figure 2. Original simultaneous measurements of systemic blood pressure and pulpal blood flow before, during and after lipopolysaccharide infusion.

Original traces showing effect of intravenous injection of lipopolysaccharide (LPS), 4 mg kg⁻¹ resulting in an experimental endotoxaemia, on arterial systemic blood pressure (PA) (A) and pulpal blood flow (PBF) (measured in arbitrary perfusion units (PU)) (B). Infusion of LPS (arrow) caused an almost immediate reduction in PA as well as PBF. Note that PA increased almost to levels seen before administration of LPS whereas, PBF remained low at the end of the 3 h-experimental period (right part of both panels).