Table 2.
—Mass Scanning Peaks Corresponding to Ammonia
| Clinical Characteristic | H3O+18+ | NO+17+ | NO+18 | O2+17+ | O2+18+ |
| RA pressure, mm Hg | 0.52, 0.003 | … | … | 0.38, 0.04 | … |
| Mean PAP, mm Hg | 0.43, 0.02 | … | … | … | … |
| PVR, Wood Units | 0.42, 0.02 | 0.36, 0.05 | … | … | … |
| Cardiac index, thermodilution L/min/m2 | −0.66, 0.001 | −0.5, 0.005 | −0.46, 0.01 | … | −0.38, 0.04 |
| Cardiac index, indirect Fick L/min/m2 | −0.51, 0.004 | … | −0.47, 0.008 | … | … |
| Svo2, % | −0.5, 0.005 | −0.45, 0.01 | −0.39, 0.03 | −0.43, 0.02 | −0.37, 0.05 |
Data are presented as ρ index, P value. Only significant correlations are shown. PAP = pulmonary artery pressure. See Table 1 legend for expansion of other abbreviations.