Fig. 1.  Impact of early neuronal and delayed inducible nitric oxide synthase inhibitor treatment on mean arterial pressure (MAP) (A ) and the relationship of left ventricular stroke work index (LVSWI) and left atrial pressure as an indicator of myocardial contractility (B ) in sheep with pulmonary sepsis. Data of LVSWI and left atrial pressure are expressed as mean ± SEM. MAP is presented as % of baseline values (for mean ± SEM see table 2). *P < 0.05 versus  sham; †P < 0.05 versus  control.