Table 2.

Hemodynamics Before and After Treatment With PAH-Specific Therapy^*

Variables	No.	Pretreatment	Posttreatment	p Value
MPAP, mm Hg	12	48.5 ± 4.3	39.4 ± 2.8	0.008
Cardiac output, L/min	11	4.3 ± 0.66	4.6 ± 0.36	0.791
Right atrial pressure, mm Hg	11	9.9 ± 2.5	7.0 ± 1.6	0.214
PAWP, mm Hg	10	9.4 ± 0.88	11.4 ± 1.8	0.275
PVR, dyne . s . cm−5	10	890.8 ± 105	540.6 ± 91.8	0.011

*Values are given as the mean ± SEM, unless otherwise indicated.