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. Author manuscript; available in PMC: 2014 Apr 28.
Published in final edited form as: Circ Heart Fail. 2008 Nov;1(4):213–219. doi: 10.1161/CIRCHEARTFAILURE.108.796789

Figure 3.

Figure 3

Influence of sildenafil treatment on pulmonary vascular resistance (PVR) and contractility index (dP/dtmax/IP) compared with consecutive LVAD control patients at pre-left ventricular assist device (pre-LVAD), Post-LVAD, and 2–4, 6–9, and 12–15 weeks post treatment with sildenafil or with no treatment. Data are presented as Mean +/− SD. Post-LVAD measurement is time of first right heart catherization and also when patients were initiated on sildenafil. n indicates number of patients. * P<0.05 vs control patients at 12–15 week right heart catheterization. Comparisons for the week 12–15 time point were made with un-paired Student’s t-test.