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. 2009 Feb 19;7:9. doi: 10.1186/1476-7120-7-9

Figure 3.

Figure 3

Pulmonary artery pressure (top) and pulsed-tissue Doppler traces at the tricuspid annulus (middle) and at the mitral annulus (at the bottom) before and during the inhalation of iloprost. The white arrows show the pulmonary valve closure.