Fig. 7.

Clinical Course. This figure shows changes in the pulmonary arterial pressure with TRPG measured on cardiac echocardiography as an index. After PEA, the TRPG dropped to 24 mmHg but it later reached 95 mmHg during an exacerbation. After hospitalization, gradual exacerbation was observed despite the use of targeted medical therapy, and TRPG eventually reached 120 mmHg. After that, TRPG decreased with each BPA procedure. After five BPA procedures, TRPG decreased to 30 mmHg at 4 months and 22 mmHg at 15 months. Abbreviations: Apr, April; BPA, balloon pulmonary angioplasty; Dec, December; Jan, January; PEA, pulmonary endarterectomy; TRPG, tricuspid regurgitation pressure gradient; Nov, November; Oct, October.