Please click here to obtain permission to reproduce this image.
Click on image to view larger version.
Figure 2 Hemodynamics and muscle sympathetic nervous activity (MSA) at similar levels of systemic arterial (sBP) and central venous (CVP) blood pressure after infusion of L-NMMA (1 mg/kg/min), and phenylephrine (PE, 100 µg/min) in combination with lower body negative pressure (LBNP –30 mm Hg). Stroke volume index (SVI) was significantly lower during L-NMMA infusion than during phenylephrine, whereas systemic vascular resistance (SVR) was significantly higher. No significant difference in sympathetic nerve activity between L-NMMA and phenylephrine could be observed (*p < 0.05).
|
